subject:(Nonlinear Control)

1. Rollins, Elizabeth. Nonlinear Adaptive Dynamic Inversion Control for Hypersonic Vehicles.

Degree: 2013, Texas Digital Library

URL: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66572

► Because of the widely varying flight conditions in which hypersonic vehicles operate and certain aspects unique to hypersonic flight, the development of control architectures for… (more)

▼ Because of the widely varying flight conditions in which hypersonic vehicles operate and certain aspects unique to hypersonic flight, the development of control architectures for these vehicles presents a challenge. Previous work on control design for hypersonic vehicles often has involved linearized or simplified nonlinear dynamical models of the aircraft. This dissertation retains the nonlinear dynamics in the design of the controller for a generic hypersonic vehicle model and develops nonlinear adaptive dynamic inversion control architecture with a control allocation scheme. A robustness analysis is performed on the initial controller design, which shows that the controller is able to handle time delays, perturbations in stability derivatives, and reduced control surface effectiveness while maintaining tracking performance. One particular safety concern in hypersonic flight is inlet unstarts, which not only produce a significant decrease in the thrust but also can lead to loss of control and possibly the loss of the vehicle. This dissertation focuses on the prevention of inlet unstarts that are triggered by an altered flow that fails to pass through the throat of the engine because the aircraft has exceeded limits on angle-of-attack and sideslip angle. To prevent undesirable inlet unstart events, the nonlinear adaptive dynamic inversion control architecture is given the ability to enforce state constraints. Because several phenomena can cause inlet unstarts, the control architecture also is tested to determine if the controller is able to maintain reference trajectory tracking and to prevent the loss of the vehicle should an inlet unstart occur. Additionally, a fault- tolerant control capability is added to the control architecture so that the vehicle can handle the failure of one or more control surfaces. The tracking performance of the nonlinear adaptive dynamic inversion control architecture is analyzed for the cases of enforcement of state constraints, control surface failures, and inlet unstarts. In all three cases, the control architecture is able to track reference trajectories with minimal to no degradation in performance. Limitations were discovered in the case of the controller that enforces state constraints in terms of the trajectories that can be tracked when combined with fault-tolerant control. However, the results indicate that the nonlinear adaptive dynamic inversion controller is able to achieve tracking performance in the presence of the uncertainties and inlet unstarts conditions studied in this dissertation. Advisors/Committee Members: Valasek, John (advisor).

Subjects/Keywords: nonlinear adaptive control

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APA (6^th Edition):

Rollins, E. (2013). Nonlinear Adaptive Dynamic Inversion Control for Hypersonic Vehicles. (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66572

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rollins, Elizabeth. “Nonlinear Adaptive Dynamic Inversion Control for Hypersonic Vehicles.” 2013. Thesis, Texas Digital Library. Accessed January 20, 2021. http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66572.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rollins, Elizabeth. “Nonlinear Adaptive Dynamic Inversion Control for Hypersonic Vehicles.” 2013. Web. 20 Jan 2021.

Vancouver:

Rollins E. Nonlinear Adaptive Dynamic Inversion Control for Hypersonic Vehicles. [Internet] [Thesis]. Texas Digital Library; 2013. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66572.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rollins E. Nonlinear Adaptive Dynamic Inversion Control for Hypersonic Vehicles. [Thesis]. Texas Digital Library; 2013. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66572

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

California State University – Chico

2. Jia, Yitao. A multi-input multi-output self tuning regulator for nonlinear helicopter control .

Degree: 2013, California State University – Chico

URL: http://hdl.handle.net/10211.4/602

► This project aims at designing an on-line controller in the form of a Multi Input Multi Output Self Tuning Regulator, to stabilize a 6 degree… (more)

Subjects/Keywords: nonlinear helicopter control

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APA (6^th Edition):

Jia, Y. (2013). A multi-input multi-output self tuning regulator for nonlinear helicopter control . (Thesis). California State University – Chico. Retrieved from http://hdl.handle.net/10211.4/602

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jia, Yitao. “A multi-input multi-output self tuning regulator for nonlinear helicopter control .” 2013. Thesis, California State University – Chico. Accessed January 20, 2021. http://hdl.handle.net/10211.4/602.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jia, Yitao. “A multi-input multi-output self tuning regulator for nonlinear helicopter control .” 2013. Web. 20 Jan 2021.

Vancouver:

Jia Y. A multi-input multi-output self tuning regulator for nonlinear helicopter control . [Internet] [Thesis]. California State University – Chico; 2013. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10211.4/602.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jia Y. A multi-input multi-output self tuning regulator for nonlinear helicopter control . [Thesis]. California State University – Chico; 2013. Available from: http://hdl.handle.net/10211.4/602

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cape Peninsula University of Technology

3. Mfoumboulou, Yohan Darcy. Development of nonlinear control algorithms for implementation in distributed systems .

Degree: 2014, Cape Peninsula University of Technology

URL: http://etd.cput.ac.za/handle/20.500.11838/1187

► In the past decade, the need for flexibility and reconfigurability in automation has contributed to the rise of the distributed concept in control systems engineering.… (more)

▼ In the past decade, the need for flexibility and reconfigurability in automation has contributed to the rise of the distributed concept in control systems engineering. The IEC 61499 standard is used to define a distributed model for dividing various components of an industrial application in automation process and complicated control of machinery into function blocks. Such function blocks have the flexibility to be distributed and interconnected across a number of controllers. However, this new standard for automation faces two main challenges: the complexity in designs of distributed systems and the lack of utilization of the standard in industry. Most applications of controllers based on functional block programming are for linear systems. As most of industrial processes are nonlinear there is a need to extend the functional block approach for implementation of nonlinear controllers. Design complexity involves the exact modeling of the system in function blocks to obtain its accurate behaviour and the lack of utilization of the standard is understandable because new technologies are not easily accepted in industry due to their high prices and risks of compromising the performance at the production level. The thesis describes a methodology for design and implementation of nonlinear controllers for nonlinear plants in IEC 61499 standard compliant real-time environment of TwinCAT 3 and Beckhoff Programmable Logic Controller (PLC). The first step is to design the nonlinear controllers and simulate the closed-loop system in MATLAB/SIMULINK software. Then the new engineering based concepts to transform the obtained closed-loop system model to an IEC 61499 Function Block Model. This is accomplished by applying one method which involves a complete model transformation between two block-diagram languages: Simulink and TwinCAT 3. The development tools that support the transformation algorithm in the thesis sets the foundation stone of the verification and validation structure for IEC 61499 function blocks approach. The transformed model of the closed-loop system is downloaded to the Beckhoff PLC and is simulated in real-time. The obtained results demonstrate that the developed methodology allows complex nonlinear controllers to be successfully transformed to IEC 61499 standard compliant environment and to be applied for real-time PLC control of complex plants.

Subjects/Keywords: Nonlinear control theory; Algorithms; Nonlinear systems

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APA (6^th Edition):

Mfoumboulou, Y. D. (2014). Development of nonlinear control algorithms for implementation in distributed systems . (Thesis). Cape Peninsula University of Technology. Retrieved from http://etd.cput.ac.za/handle/20.500.11838/1187

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mfoumboulou, Yohan Darcy. “Development of nonlinear control algorithms for implementation in distributed systems .” 2014. Thesis, Cape Peninsula University of Technology. Accessed January 20, 2021. http://etd.cput.ac.za/handle/20.500.11838/1187.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mfoumboulou, Yohan Darcy. “Development of nonlinear control algorithms for implementation in distributed systems .” 2014. Web. 20 Jan 2021.

Vancouver:

Mfoumboulou YD. Development of nonlinear control algorithms for implementation in distributed systems . [Internet] [Thesis]. Cape Peninsula University of Technology; 2014. [cited 2021 Jan 20]. Available from: http://etd.cput.ac.za/handle/20.500.11838/1187.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mfoumboulou YD. Development of nonlinear control algorithms for implementation in distributed systems . [Thesis]. Cape Peninsula University of Technology; 2014. Available from: http://etd.cput.ac.za/handle/20.500.11838/1187

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta

4. Zahedzadeh, Vahid. Gain Analysis and Stability of Nonlinear Control Systems.

Degree: PhD, Department of Electrical and Computer Engineering, 2009, University of Alberta

URL: https://era.library.ualberta.ca/files/fq977w346

► The complexity of large industrial engineering systems such as chemical plants has continued to increase over the years. As a result, flexible control systems are… (more)

▼ The complexity of large industrial engineering systems such as chemical plants has continued to increase over the years. As a result, flexible control systems are required to handle variation in the operating conditions. In the classical approach, first the plant model should be linearized at the nominal operating point and then, a robust controller should be designed for the resulting linear system. However, the performance of a controller designed by this method deteriorates when operation deviates from the nominal point. When the distance between the operating region and the nominal operating point increases, this performance degradation may lead to instability. In the context of traditional linear control, one method to solve this problem is to consider the impact of nonlinearity as “uncertainty” around the nominal model and design a controller such that the desired performance is satisfied for all possible systems in the uncertainty set. As the size of uncertainty increases, conservatism occurs and at some point, it becomes impossible to design a controller that can provide satisfactory performance. One of the methods proposed to overcome the aforementioned shortcomings is the so-called Multiple Model approach. Using Multi-Models, local designs are performed for various operating regions and membership functions or a supervisory switching scheme is used to interpolate or switch among the controllers as the operating point moves among local regions. Since the Multiple Model method is a natural extension of the linear control method, it inherits some benefits of linear control such as simplicity of analysis and implementation. However, all these benefits are valid locally. For example, the multiple model method may be vulnerable when global stability is taken into account. The core objective of this thesis is to develop new tools to study stability of closed-loop nonlinear systems controlled by local controllers in order to improve design of multiple model control systems. For example, one of the aims of this work is to investigate how to determine the region where closed loop system is stable. A secondary objective is to study the effects of the exogenous signals on stability of such systems.

Subjects/Keywords: Nonlinear Control Systems; Stability; Nonlinear Systems

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APA (6^th Edition):

Zahedzadeh, V. (2009). Gain Analysis and Stability of Nonlinear Control Systems. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/fq977w346

Chicago Manual of Style (16^th Edition):

Zahedzadeh, Vahid. “Gain Analysis and Stability of Nonlinear Control Systems.” 2009. Doctoral Dissertation, University of Alberta. Accessed January 20, 2021. https://era.library.ualberta.ca/files/fq977w346.

MLA Handbook (7^th Edition):

Zahedzadeh, Vahid. “Gain Analysis and Stability of Nonlinear Control Systems.” 2009. Web. 20 Jan 2021.

Vancouver:

Zahedzadeh V. Gain Analysis and Stability of Nonlinear Control Systems. [Internet] [Doctoral dissertation]. University of Alberta; 2009. [cited 2021 Jan 20]. Available from: https://era.library.ualberta.ca/files/fq977w346.

Council of Science Editors:

Zahedzadeh V. Gain Analysis and Stability of Nonlinear Control Systems. [Doctoral Dissertation]. University of Alberta; 2009. Available from: https://era.library.ualberta.ca/files/fq977w346

University of Waterloo

5. Maitland, Anson. Nonlinear Model Predictive Control Reduction Strategies for Real-time Optimal Control.

Degree: 2019, University of Waterloo

URL: http://hdl.handle.net/10012/14524

► This thesis presents a variety of strategies to accelerate the turnaround times (TATs) of nonlinear and hybrid model predictive controllers (MPCs). These strategies are unified… (more)

▼ This thesis presents a variety of strategies to accelerate the turnaround times (TATs) of nonlinear and hybrid model predictive controllers (MPCs). These strategies are unified by the themes of symbolic computing, nonlinear model reduction and automotive control. The first contribution of this thesis is a new MPC problem formulation, called symbolic single shooting (symSS), that leverages the power of symbolic computing to generate an optimization problem of minimal dimension. This formulation is counter to the recent trend of introducing and exploiting sparsity of the MPC optimization problem for tailored solvers to exploit. We make use of this formulation widely in this thesis. The second contribution of this thesis is a novel application of proper orthogonal decomposition (POD) to MPC. In this strategy we construct a dimensionally-reduced optimization problem by restricting the problem Lagrangian to a subspace. This subspace is found by running simulations offline from which we extract the important solution features. Using this restricted Lagrangian we are able to reduce the problem dimension dramatically, thus simplifying the linear solve. This leads to TAT accelerations of more than two times with minimal controller degradation. The third contribution of this thesis is an informed move blocking strategy. This strategy exploits the features extracted in the restricted Lagrangian subspace to derive a sequence of increasingly blocked move blocking strategies. These move blocking strategies can then be used to reduce the dimension of the optimization problem in a sparse manner, leading to even greater acceleration of the controller TAT . The fourth contribution of this thesis is a new quasi-Newton method for MPC. This method utilizes ideas similar to singular perturbation-based model reduction to truncate the expression for the problem Hessian at the symbolic level. For nonlinear systems with a modest Lipschitz constant, we can identify the timestep as a `small' parameter about which we can do a perturbative expansion of the Lagrangian and its derivatives. Truncating to first order in the timestep, we are able to find a good approximation of the Hessian leading to TAT acceleration. The fifth contribution of this thesis is controller integration strategy based on nested MPCs. Using the symSS formulation we can construct an explicit model of a controlled plant that includes the full model as well as the MPC's action. This form of the controlled plant model allows us to generate exact derivatives so that fast solvers can be used for real time application. We focus here on the problem of planning and motion control integration for autonomous vehicles but this strategy can be extended for other problems that require accurate models of a controlled plant. The sixth contribution of this thesis is a strategy to handle integer controls in MPC based on a few reasonable assumptions: our predictions over the horizon are almost perfect and the future is inevitable. These assumptions enforce a…

Subjects/Keywords: model predictive control; nonlinear control; hybrid control

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APA (6^th Edition):

Maitland, A. (2019). Nonlinear Model Predictive Control Reduction Strategies for Real-time Optimal Control. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/14524

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Maitland, Anson. “Nonlinear Model Predictive Control Reduction Strategies for Real-time Optimal Control.” 2019. Thesis, University of Waterloo. Accessed January 20, 2021. http://hdl.handle.net/10012/14524.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Maitland, Anson. “Nonlinear Model Predictive Control Reduction Strategies for Real-time Optimal Control.” 2019. Web. 20 Jan 2021.

Vancouver:

Maitland A. Nonlinear Model Predictive Control Reduction Strategies for Real-time Optimal Control. [Internet] [Thesis]. University of Waterloo; 2019. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10012/14524.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Maitland A. Nonlinear Model Predictive Control Reduction Strategies for Real-time Optimal Control. [Thesis]. University of Waterloo; 2019. Available from: http://hdl.handle.net/10012/14524

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Newcastle

6. Stoddard, Jeremy G. Innovative data-driven modeling and control for nonlinear systems using Volterra series.

Degree: PhD, 2019, University of Newcastle

URL: http://hdl.handle.net/1959.13/1408689

►

Research Doctorate - Doctor of Philosophy (PhD)

The Volterra series is a powerful and versatile tool which can be used to model any nonlinear dynamical… (more)

▼

Research Doctorate - Doctor of Philosophy (PhD)

The Volterra series is a powerful and versatile tool which can be used to model any nonlinear dynamical system that is time-invariant and has fading memory. The popularity of the series in system identification and control applications has been limited due to its complex multidimensional nature, and thus the large numbers of parameters required in a Volterra series model. Recent developments using Bayesian regularization techniques have increased the feasibility of Volterra series estimation from arbitrary time domain data records, however there are still several challenges remaining to enable widespread use of the series in identification and control. Three of these challenges in particular form the motivation for contributions in this thesis. The first challenge addressed in the thesis relates to Volterra series estimation from time domain data, and in particular when data records are short, noisy and arbitrary in nature. While the recently proposed Bayesian regularization approach represents significant progress, the method is still generally inaccurate or computationally intractable for series orders higher than 3. Two main factors cause these issues at high series orders, and they are the computational burden of the Bayesian optimization routine, and the sheer number of parameters required to be estimated. To combat these issues, a new expectation-maximization (EM) framework is proposed in this thesis to improve the computation time scaling (with series order) of the optimization problem. The new framework is then combined with a basis function approach to estimation, where the Volterra series terms are estimated using orthonormal basis function expansions. Simulation and practical examples highlight the improved feasibility and performance of the regularized basis function approach over existing methods in the literature. The second motivating challenge is to construct equivalent regularized methods for frequency domain identification of Volterra series models. There are several frequency domain representations available in the literature for Volterra series, and two of these models are considered in the thesis: Nonlinear Output Frequency Response Functions (NOFRFs) and Generalized Frequency Response Functions (GFRFs). An extension to the linear theory is proposed for estimating NOFRFs in the case where the system has a parallel Hammerstein structure. In this case, the NOFRF at each nonlinear order behaves like a linear filter. For the GFRFs, which are multidimensional analogs of the time domain Volterra series terms, a Bayesian estimation method is developed and designed to be equivalent to the time domain method available in the literature. Simulation examples confirm the benefits of each model's proposed method. An investigation is also performed to analyze the transient contributions in a nonlinear system's frequency domain response under arbitrary excitation. Analytic expressions are obtained in a highly structured manner, revealing valuable insight for…

Advisors/Committee Members: University of Newcastle. Faculty of Engineering & Built Environment, School of Electrical Engineering and Computing.

Subjects/Keywords: nonlinear; identification; control; Volterra series

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APA (6^th Edition):

Stoddard, J. G. (2019). Innovative data-driven modeling and control for nonlinear systems using Volterra series. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1408689

Chicago Manual of Style (16^th Edition):

Stoddard, Jeremy G. “Innovative data-driven modeling and control for nonlinear systems using Volterra series.” 2019. Doctoral Dissertation, University of Newcastle. Accessed January 20, 2021. http://hdl.handle.net/1959.13/1408689.

MLA Handbook (7^th Edition):

Stoddard, Jeremy G. “Innovative data-driven modeling and control for nonlinear systems using Volterra series.” 2019. Web. 20 Jan 2021.

Vancouver:

Stoddard JG. Innovative data-driven modeling and control for nonlinear systems using Volterra series. [Internet] [Doctoral dissertation]. University of Newcastle; 2019. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1959.13/1408689.

Council of Science Editors:

Stoddard JG. Innovative data-driven modeling and control for nonlinear systems using Volterra series. [Doctoral Dissertation]. University of Newcastle; 2019. Available from: http://hdl.handle.net/1959.13/1408689

Virginia Tech

7. Martin V., Joseph Bacon. Design of Time-Varying Hybrid Zero Dynamics Controllers for Exponential Stabilization of Agile Quadrupedal Locomotion.

Degree: MS, Mechanical Engineering, 2020, Virginia Tech

URL: http://hdl.handle.net/10919/100689

► This thesis extends a class of controllers designed to address the full dynamics of stable locomotion in quadrupedal robots. As of yet, there is no… (more)

Subjects/Keywords: Nonlinear Control; Quadrupedal Locomotion

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APA (6^th Edition):

Martin V., J. B. (2020). Design of Time-Varying Hybrid Zero Dynamics Controllers for Exponential Stabilization of Agile Quadrupedal Locomotion. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/100689

Chicago Manual of Style (16^th Edition):

Martin V., Joseph Bacon. “Design of Time-Varying Hybrid Zero Dynamics Controllers for Exponential Stabilization of Agile Quadrupedal Locomotion.” 2020. Masters Thesis, Virginia Tech. Accessed January 20, 2021. http://hdl.handle.net/10919/100689.

MLA Handbook (7^th Edition):

Martin V., Joseph Bacon. “Design of Time-Varying Hybrid Zero Dynamics Controllers for Exponential Stabilization of Agile Quadrupedal Locomotion.” 2020. Web. 20 Jan 2021.

Vancouver:

Martin V. JB. Design of Time-Varying Hybrid Zero Dynamics Controllers for Exponential Stabilization of Agile Quadrupedal Locomotion. [Internet] [Masters thesis]. Virginia Tech; 2020. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10919/100689.

Council of Science Editors:

Martin V. JB. Design of Time-Varying Hybrid Zero Dynamics Controllers for Exponential Stabilization of Agile Quadrupedal Locomotion. [Masters Thesis]. Virginia Tech; 2020. Available from: http://hdl.handle.net/10919/100689

8. Quine, Zachary Ryan. Enhanced Control and Characterization of Complex Molecules with Ultrashort Lasers .

Degree: PhD, 2017, Princeton University

URL: http://arks.princeton.edu/ark:/88435/dsp0105741v35c

► Quantum control employs ultrashort-pulse laser fields to observe and guide atoms and molecules by manipulating the wave-like interference between quantum pathways, generating constructive interference favoring… (more)

▼ Quantum control employs ultrashort-pulse laser fields to observe and guide atoms and molecules by manipulating the wave-like interference between quantum pathways, generating constructive interference favoring a target product state. As technology has developed, especially tools for femtosecond pulse generation and shaping, the range of systems investigated by quantum control has grown from simple dilute atomic gases to complex condensed phase molecules. This thesis applies the tools of quantum control to optically-sensitive biochemical protein sensors and switches. A primary focus of this work is the enhanced control of Optogenetic switching by non-linear pulsed excitation. Optogenetics enables optical control of \emph{in vivo} biological functions by inserting light-sensitive switches into cells. However, spectral cross-talk between switch states (their overlapping steady-state absorption and emission spectra) prevents full-range control. We introduce a novel nonlinear optical technique to overcome cross-talk by exploiting differences in the excited state dynamics of the active and inactive switch states. We effectively demonstrate the feasibility of this control mechanism and begin characterizing the dependence of the enhancement factor on laser control parameters to discover the laser controls which most effectively maximize the dynamic range of the optogenetic switch. This proof of principle work is a first step toward multiplexed control of multiple optogenetic switches. We also quantitatively characterize mixtures of Fluorescent Proteins (FPs) suffering from cross-talk by employing Optimal Dynamic Discrimination (ODD), which amplifies differences in the excited state dynamics of quantum systems using optimally tailored control fields. ODD enables accurate concentration determination of mixtures of Enhanced Blue and Enhanced Cyan FPs, advancing the technique toward the simultaneous monitoring of many biochemical processes by multiplexed ODD of several FPs, leading to the ultimate goal of implementing ODD to control multiple sensors and switches for multiplexed control and observation of biochemical processes. This thesis also presents a novel capability to map concentrations of intermixing fluids in colliding micro-droplets using planar laser induced fluorescence of a chemically-sensitive dye, revealing details of early-stage mixing; as well as an evaluation of new and developing ultrafast optical technologies to suggest tools for future development of optimal quantum control experiments. Advisors/Committee Members: Rabitz, Herschel R (advisor).

Subjects/Keywords: Nonlinear Optics; Optogenetics; Quantum Control

10 more images…

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APA (6^th Edition):

Quine, Z. R. (2017). Enhanced Control and Characterization of Complex Molecules with Ultrashort Lasers . (Doctoral Dissertation). Princeton University. Retrieved from http://arks.princeton.edu/ark:/88435/dsp0105741v35c

Chicago Manual of Style (16^th Edition):

Quine, Zachary Ryan. “Enhanced Control and Characterization of Complex Molecules with Ultrashort Lasers .” 2017. Doctoral Dissertation, Princeton University. Accessed January 20, 2021. http://arks.princeton.edu/ark:/88435/dsp0105741v35c.

MLA Handbook (7^th Edition):

Quine, Zachary Ryan. “Enhanced Control and Characterization of Complex Molecules with Ultrashort Lasers .” 2017. Web. 20 Jan 2021.

Vancouver:

Quine ZR. Enhanced Control and Characterization of Complex Molecules with Ultrashort Lasers . [Internet] [Doctoral dissertation]. Princeton University; 2017. [cited 2021 Jan 20]. Available from: http://arks.princeton.edu/ark:/88435/dsp0105741v35c.

Council of Science Editors:

Quine ZR. Enhanced Control and Characterization of Complex Molecules with Ultrashort Lasers . [Doctoral Dissertation]. Princeton University; 2017. Available from: http://arks.princeton.edu/ark:/88435/dsp0105741v35c

KTH

9. Knöös, Johan. Control of a Reusable Launch Vehicle.

Degree: Mathematics (Dept.), 2011, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-43837

► Abstrakt: This report examines different control design methods, linear as well as nonlinear, for a suborbital reusable launch vehicle. An investigation of the natural… (more)

Subjects/Keywords: Flight control systems; nonlinear control; global optimization

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APA (6^th Edition):

Knöös, J. (2011). Control of a Reusable Launch Vehicle. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-43837

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Knöös, Johan. “Control of a Reusable Launch Vehicle.” 2011. Thesis, KTH. Accessed January 20, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-43837.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Knöös, Johan. “Control of a Reusable Launch Vehicle.” 2011. Web. 20 Jan 2021.

Vancouver:

Knöös J. Control of a Reusable Launch Vehicle. [Internet] [Thesis]. KTH; 2011. [cited 2021 Jan 20]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-43837.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Knöös J. Control of a Reusable Launch Vehicle. [Thesis]. KTH; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-43837

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

10. Damsteeg, J. (author). Nonlinear and learning control of a one-dimensional magnetic manipulator.

Degree: 2015, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:68284ce3-8a04-4ff7-9cd5-8f222f5d5e95

►

This thesis describes the control design for a magnetic manipulator. The experimental setup has four electromagnets (coils) which can be used to shape the magnetic… (more)

Subjects/Keywords: nonlinear control; magnetic manipulation; learning control

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APA (6^th Edition):

Damsteeg, J. (. (2015). Nonlinear and learning control of a one-dimensional magnetic manipulator. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:68284ce3-8a04-4ff7-9cd5-8f222f5d5e95

Chicago Manual of Style (16^th Edition):

Damsteeg, J (author). “Nonlinear and learning control of a one-dimensional magnetic manipulator.” 2015. Masters Thesis, Delft University of Technology. Accessed January 20, 2021. http://resolver.tudelft.nl/uuid:68284ce3-8a04-4ff7-9cd5-8f222f5d5e95.

MLA Handbook (7^th Edition):

Damsteeg, J (author). “Nonlinear and learning control of a one-dimensional magnetic manipulator.” 2015. Web. 20 Jan 2021.

Vancouver:

Damsteeg J(. Nonlinear and learning control of a one-dimensional magnetic manipulator. [Internet] [Masters thesis]. Delft University of Technology; 2015. [cited 2021 Jan 20]. Available from: http://resolver.tudelft.nl/uuid:68284ce3-8a04-4ff7-9cd5-8f222f5d5e95.

Council of Science Editors:

Damsteeg J(. Nonlinear and learning control of a one-dimensional magnetic manipulator. [Masters Thesis]. Delft University of Technology; 2015. Available from: http://resolver.tudelft.nl/uuid:68284ce3-8a04-4ff7-9cd5-8f222f5d5e95

Delft University of Technology

11. Akyüz, Erdi (author). Reset Control for Vibration Isolation.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:b627fe61-746a-4675-be57-cfc5808812ec

►

Floor vibrations are a common problem in high tech engineering where good tracking, precision and bandwidth have utmost importance. They are mainly present at low… (more)

▼

Floor vibrations are a common problem in high tech engineering where good tracking, precision and bandwidth have utmost importance. They are mainly present at low frequencies, and they need to be suppressed. PID control is the go-to controller in the industry because of its ease of design, simple implementation and good performance. However, PID is subjected to the fundamental limitations of linear control theory - the waterbed effect and bode's gain-phase relationship. Therefore, it is not possible to improve one performance criterion, like stability, without negatively influencing the other. The need for overcoming the fundamental limitations of linear control initiates research towards nonlinear controllers. Reset control is a type of nonlinear controller as a solution to overcome the limitations of a linear control. It reduces phase lag within the system, gives the advantage to reach higher bandwidth and results in lower overshoot or a faster settling time compared to linear controllers. However, using reset control comes with a price of unwanted dynamics due to the higher order harmonics. The main focus of this thesis is to improve disturbance rejection performance against floor vibrations by attenuating the power of high order harmonics. This problem has been tackled within the thesis, and a band-pass reset control is proposed. Proposed reset controller applies reset only within the frequency range where floor vibrations are present, and it uses integrator as a reset variable. Results show reset controller that has a broadband phase compensation, like CgLp, is more advantageous towards phase lag reduction methods. CgLp is a reset element, which is an abbreviation of Constant-Gain Lead Phase. It gives broadband phase compensation within the desired range of frequencies by using generalized first order reset element. Also, CgLp controller achieved disturbance rejection performance of PIsuperscript{2}D with the phase behavior of Clegg.

Mechatronic System Design

Advisors/Committee Members: Hossein Nia Kani, Hassan (mentor), Saikumar, Niranjan (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Reset control; disturbance rejection; Nonlinear control

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APA (6^th Edition):

Akyüz, E. (. (2018). Reset Control for Vibration Isolation. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b627fe61-746a-4675-be57-cfc5808812ec

Chicago Manual of Style (16^th Edition):

Akyüz, Erdi (author). “Reset Control for Vibration Isolation.” 2018. Masters Thesis, Delft University of Technology. Accessed January 20, 2021. http://resolver.tudelft.nl/uuid:b627fe61-746a-4675-be57-cfc5808812ec.

MLA Handbook (7^th Edition):

Akyüz, Erdi (author). “Reset Control for Vibration Isolation.” 2018. Web. 20 Jan 2021.

Vancouver:

Akyüz E(. Reset Control for Vibration Isolation. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Jan 20]. Available from: http://resolver.tudelft.nl/uuid:b627fe61-746a-4675-be57-cfc5808812ec.

Council of Science Editors:

Akyüz E(. Reset Control for Vibration Isolation. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:b627fe61-746a-4675-be57-cfc5808812ec

University of Cape Town

12. Von Klemperer, Nicholas. Dual-axis tilting quadrotor aircraft: Dynamic modelling and control of dual-axis tilting quadrotor aircraft.

Degree: MSc, Electrical Engineering, 2018, University of Cape Town

URL: http://hdl.handle.net/11427/30156

► This dissertation aims to apply non-zero attitude and position setpoint tracking to a quadrotor aircraft, achieved by solving the problem of a quadrotor’s inherent underactuation.… (more)

▼ This dissertation aims to apply non-zero attitude and position setpoint tracking to a quadrotor aircraft, achieved by solving the problem of a quadrotor’s inherent underactuation. The introduction of extra actuation aims to mechanically accommodate for stable tracking of non-zero state trajectories. The requirement of the project is to design, model, simulate and control a novel quadrotor platform which can articulate all six degrees of rotational and translational freedom (6-DOF) by redirecting and vectoring each propeller’s individually produced thrust. Considering the extended articulation, the proposal is to add an additional two axes (degrees) of actuation to each propeller on a traditional quadrotor frame. Each lift propeller can be independently pitched or rolled relative to the body frame. Such an adaptation, to what is an otherwise well understood aircraft, produces an over-actuated control problem. Being first and foremost a control engineering project, the focus of this work is plant model identification and control solution of the proposed aircraft design. A higher-level setpoint tracking control loop designs a generalized plant input (net forces and torques) to act on the vehicle. An allocation rule then distributes that virtual input in solving for explicit actuator servo positions and rotational propeller speeds. The dissertation is structured as follows: First a schedule of relevant existing works is reviewed in Ch:1 following an introduction to the project. Thereafter the prototype’s design is detailed in Ch:2, however only the final outcome of the design stage is presented. Following that, kinematics associated with generalized rigid body motion are derived in Ch:3 and subsequently expanded to incorporate any aerodynamic and multibody nonlinearities which may arise as a result of the aircraft’s configuration (changes). Higher-level state tracking control design is applied in Ch:4 whilst lower-level control allocation rules are then proposed in Ch:5. Next, a comprehensive simulation is constructed in Ch:6, based on the plant dynamics derived in order to test and compare the proposed controller techniques. Finally a conclusion on the design(s) proposed and results achieved is presented in Ch:7. Throughout the research, physical tests and simulations are used to corroborate proposed models or theorems. It was decided to omit flight tests of the platform due to time constraints, those aspects of the project remain open to further investigation. The subsequent embedded systems design stemming from the proposed control plant is outlined in the latter of Ch:2, Sec:2.4. Such implementations are not investigated here but design proposals are suggested. The primary outcome of the investigation is ascertaining the practicality and feasibility of such a design, most importantly whether or not the complexity of the mechanical design is an acceptable compromise for the additional degrees of control actuation introduced. Control derivations and the prototype design presented here are by no means optimal nor the… Advisors/Committee Members: Boje, Edward (advisor).

Subjects/Keywords: Nonlinear Control; Control Allocation; Quadrotor; UAV

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APA (6^th Edition):

Von Klemperer, N. (2018). Dual-axis tilting quadrotor aircraft: Dynamic modelling and control of dual-axis tilting quadrotor aircraft. (Masters Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/30156

Chicago Manual of Style (16^th Edition):

Von Klemperer, Nicholas. “Dual-axis tilting quadrotor aircraft: Dynamic modelling and control of dual-axis tilting quadrotor aircraft.” 2018. Masters Thesis, University of Cape Town. Accessed January 20, 2021. http://hdl.handle.net/11427/30156.

MLA Handbook (7^th Edition):

Von Klemperer, Nicholas. “Dual-axis tilting quadrotor aircraft: Dynamic modelling and control of dual-axis tilting quadrotor aircraft.” 2018. Web. 20 Jan 2021.

Vancouver:

Von Klemperer N. Dual-axis tilting quadrotor aircraft: Dynamic modelling and control of dual-axis tilting quadrotor aircraft. [Internet] [Masters thesis]. University of Cape Town; 2018. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/11427/30156.

Council of Science Editors:

Von Klemperer N. Dual-axis tilting quadrotor aircraft: Dynamic modelling and control of dual-axis tilting quadrotor aircraft. [Masters Thesis]. University of Cape Town; 2018. Available from: http://hdl.handle.net/11427/30156

Georgia Tech

13. Costello, Zachary Kohl. Distributed computation in networked systems.

Degree: PhD, Electrical and Computer Engineering, 2016, Georgia Tech

URL: http://hdl.handle.net/1853/54924

► The objective of this thesis is to develop a theoretical understanding of computation in networked dynamical systems and demonstrate practical applications supported by the theory.… (more)

Subjects/Keywords: Networked control; Nonlinear control; Distributed computation

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APA (6^th Edition):

Costello, Z. K. (2016). Distributed computation in networked systems. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/54924

Chicago Manual of Style (16^th Edition):

Costello, Zachary Kohl. “Distributed computation in networked systems.” 2016. Doctoral Dissertation, Georgia Tech. Accessed January 20, 2021. http://hdl.handle.net/1853/54924.

MLA Handbook (7^th Edition):

Costello, Zachary Kohl. “Distributed computation in networked systems.” 2016. Web. 20 Jan 2021.

Vancouver:

Costello ZK. Distributed computation in networked systems. [Internet] [Doctoral dissertation]. Georgia Tech; 2016. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1853/54924.

Council of Science Editors:

Costello ZK. Distributed computation in networked systems. [Doctoral Dissertation]. Georgia Tech; 2016. Available from: http://hdl.handle.net/1853/54924

Texas A&M University

14. Famularo, Douglas I. Observer-Based Nonlinear Dynamic Inversion Adaptive Control with State Constraints.

Degree: PhD, Aerospace Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/169595

► Hypersonic vehicle research and development has grown recently in the aerospace industry due to the powerful potential of operating a vehicle that flies at substantially… (more)

Subjects/Keywords: Adaptive Control; Nonlinear Dynamic Inversion; Nonlinear Hypersonic Vehicle Control; State Constraints

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APA (6^th Edition):

Famularo, D. I. (2017). Observer-Based Nonlinear Dynamic Inversion Adaptive Control with State Constraints. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/169595

Chicago Manual of Style (16^th Edition):

Famularo, Douglas I. “Observer-Based Nonlinear Dynamic Inversion Adaptive Control with State Constraints.” 2017. Doctoral Dissertation, Texas A&M University. Accessed January 20, 2021. http://hdl.handle.net/1969.1/169595.

MLA Handbook (7^th Edition):

Famularo, Douglas I. “Observer-Based Nonlinear Dynamic Inversion Adaptive Control with State Constraints.” 2017. Web. 20 Jan 2021.

Vancouver:

Famularo DI. Observer-Based Nonlinear Dynamic Inversion Adaptive Control with State Constraints. [Internet] [Doctoral dissertation]. Texas A&M University; 2017. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1969.1/169595.

Council of Science Editors:

Famularo DI. Observer-Based Nonlinear Dynamic Inversion Adaptive Control with State Constraints. [Doctoral Dissertation]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/169595

Queens University

15. Hoeffner, Kai. Geometric Aspects of Interconnection and Damping Assignment - Passivity-Based Control .

Degree: Chemical Engineering, 2011, Queens University

URL: http://hdl.handle.net/1974/6297

► This dissertation deals with smooth feedback stabilization of control-affine systems via Interconnection and Damping Assignment - Passivity-Based Control (IDA-PBC). The IDA-PBC methodology is a feedback… (more)

Subjects/Keywords: Nonlinear Control ; Nonlinear Systems ; Geometric Control ; IDA-PBC

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APA (6^th Edition):

Hoeffner, K. (2011). Geometric Aspects of Interconnection and Damping Assignment - Passivity-Based Control . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/6297

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hoeffner, Kai. “Geometric Aspects of Interconnection and Damping Assignment - Passivity-Based Control .” 2011. Thesis, Queens University. Accessed January 20, 2021. http://hdl.handle.net/1974/6297.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hoeffner, Kai. “Geometric Aspects of Interconnection and Damping Assignment - Passivity-Based Control .” 2011. Web. 20 Jan 2021.

Vancouver:

Hoeffner K. Geometric Aspects of Interconnection and Damping Assignment - Passivity-Based Control . [Internet] [Thesis]. Queens University; 2011. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1974/6297.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hoeffner K. Geometric Aspects of Interconnection and Damping Assignment - Passivity-Based Control . [Thesis]. Queens University; 2011. Available from: http://hdl.handle.net/1974/6297

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

16. Rahnamoun, Ali. A NONLINEAR PREDICTIVE CONTROL OF MICROSCOPIC PROCESSES USING A FUZZY SYSTEM IDENTIFICATION APPROACH .

Degree: 2011, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/12322

► System identification and controller design for systems with atomic-scale dimensions is a challenging concept. In this work, the problem of model-based control of a microscopic… (more)

▼ System identification and controller design for systems with atomic-scale dimensions is a challenging concept. In this work, the problem of model-based control of a microscopic process is investigated. The unavailability of closed-form models, as well as the ill-definition of variables to describe the process evolution, makes the controller design task challenging. We address this problem via a fuzzy system identification of the dominant process dynamics. The data required for the system identification of such processes is produced employing atomistic simulations. A methodology is developed in which fuzzy logic for nonlinear system identification is coupled with nonlinear model predictive control for regulation of microscopic processes. We illustrate the applicability of the proposed methodology on a Kinetic Monte Carlo (KMC) realization of a simplified surface reaction scheme that describes the dynamics of CO oxidation by O2 on a Pt catalytic surface. The second case study on which this procedure performance will be evaluated is thin film deposition of silicon that has wide applicability in photovoltaic industry. Thin film deposition is of the most important manufacturing processes in the category of microscopic simulation and controller design. The quality of thin film which can be used in several different useful fields is highly dependent on the manipulated variables of the process which can be intentionally changed to achieve the highest quality. Using a lattice model of thin film evolution, the important characteristics of thin film, like thickness, roughness and porosity, can be simulated. The stochastic realization of this lattice model evolution is captured with KMC Simulation. The nonlinear fuzzy model gives a reasonable approximation to the system even without using filter for the system and the proposed controller successfully forces the process from one stationary state to another state for the CO oxidation on Pt catalyst. In the thin film deposition process, two important parameters are porosity and roughness of the film, which affect the quality of the thin film devices.The modeling and controller design approach is used for controlling porosity and roughness of thin film deposition process. Advisors/Committee Members: Antonios Armaou, Thesis Advisor/Co-Advisor, Antonios Armaou, Thesis Advisor/Co-Advisor.

Subjects/Keywords: nonlinear model predictive control; kinetic monte carlo; nonlinear fuzzy system identification

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APA (6^th Edition):

Rahnamoun, A. (2011). A NONLINEAR PREDICTIVE CONTROL OF MICROSCOPIC PROCESSES USING A FUZZY SYSTEM IDENTIFICATION APPROACH . (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/12322

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rahnamoun, Ali. “A NONLINEAR PREDICTIVE CONTROL OF MICROSCOPIC PROCESSES USING A FUZZY SYSTEM IDENTIFICATION APPROACH .” 2011. Thesis, Penn State University. Accessed January 20, 2021. https://submit-etda.libraries.psu.edu/catalog/12322.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rahnamoun, Ali. “A NONLINEAR PREDICTIVE CONTROL OF MICROSCOPIC PROCESSES USING A FUZZY SYSTEM IDENTIFICATION APPROACH .” 2011. Web. 20 Jan 2021.

Vancouver:

Rahnamoun A. A NONLINEAR PREDICTIVE CONTROL OF MICROSCOPIC PROCESSES USING A FUZZY SYSTEM IDENTIFICATION APPROACH . [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Jan 20]. Available from: https://submit-etda.libraries.psu.edu/catalog/12322.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rahnamoun A. A NONLINEAR PREDICTIVE CONTROL OF MICROSCOPIC PROCESSES USING A FUZZY SYSTEM IDENTIFICATION APPROACH . [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/12322

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queens University

17. Hudon, Nicolas. Dissipative Decomposition and Feedback Stabilization of Nonlinear Control Systems .

Degree: Chemical Engineering, 2010, Queens University

URL: http://hdl.handle.net/1974/5711

► This dissertation considers the problem of approximate dissipative potentials construction and their use in smooth feedback stabilization of nonlinear control systems. For mechanical systems, dissipative… (more)

▼ This dissertation considers the problem of approximate dissipative potentials construction and their use in smooth feedback stabilization of nonlinear control systems. For mechanical systems, dissipative potentials, usually a generalized Hamiltonian function, can be derived from physical intuition. When a dissipative Hamiltonian is not available, one can rely on dissipative Hamiltonian realization techniques, as proposed recently by Cheng and coworkers. Extensive results are available in the literature for (robust) stabilization based on the obtained potential. For systems of interest in chemical engineering, especially systems with mass action kinetics, energy is often ill-defined. Moreover, realization techniques are difficult to apply, due to the nonlinearities associated with the reaction terms. Approximate dissipative realization techniques have been considered by many researchers for analysis and feedback design of controllers in the context of chemical processes. The objective of this thesis is to study the construction of local dissipative potentials and their application to solve stabilization problems. The present work employs the geometric stabilization approach proposed by Jurdjevic and Quinn, refined by Faubourg and Pomet, and by Malisoff and Mazenc, for the design of stabilizing feedback laws. This thesis seeks to extend and apply the Jurdjevic – Quinn stabilization method to nonlinear stabilization problems, assuming no a priori knowledge of a Lyapunov function. A homotopy-based local decomposition method is first employed to study the dissipative Hamiltonian realization problem, leading to the construction of locally defined dissipative potentials. If the obtained potential satisfies locally the weak Jurdjevic – Quinn conditions, it is then shown how to construct feedback controllers using that potential, and under what conditions a Lyapunov function can be constructed locally for time-independent control affine systems. The proposed technique is then used for the construction of state feedback regulators and for the stabilization of periodic orbits based on a construction proposed by Bacciotti and Mazzi. In the last chapter of the thesis, stabilization of time-dependent control affine systems is considered, and the main result is used for the stabilization of periodic solutions using asymptotic feedback tracking. Low-dimensional examples are used throughout the thesis to illustrate the proposed techniques and results.

Subjects/Keywords: Nonlinear Control ; Nonlinear Systems

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APA (6^th Edition):

Hudon, N. (2010). Dissipative Decomposition and Feedback Stabilization of Nonlinear Control Systems . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/5711

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hudon, Nicolas. “Dissipative Decomposition and Feedback Stabilization of Nonlinear Control Systems .” 2010. Thesis, Queens University. Accessed January 20, 2021. http://hdl.handle.net/1974/5711.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hudon, Nicolas. “Dissipative Decomposition and Feedback Stabilization of Nonlinear Control Systems .” 2010. Web. 20 Jan 2021.

Vancouver:

Hudon N. Dissipative Decomposition and Feedback Stabilization of Nonlinear Control Systems . [Internet] [Thesis]. Queens University; 2010. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1974/5711.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hudon N. Dissipative Decomposition and Feedback Stabilization of Nonlinear Control Systems . [Thesis]. Queens University; 2010. Available from: http://hdl.handle.net/1974/5711

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

18. Gwak, Kwan-woong. Structural analysis, design and optimization of nonlinear control systems using the linear algebraic equivalence of nonlinear controllers.

Degree: PhD, Mechanical Engineering., 2003, University of Texas – Austin

URL: http://hdl.handle.net/2152/620

Subjects/Keywords: Nonlinear systems; Nonlinear control theory

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APA (6^th Edition):

Gwak, K. (2003). Structural analysis, design and optimization of nonlinear control systems using the linear algebraic equivalence of nonlinear controllers. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/620

Chicago Manual of Style (16^th Edition):

Gwak, Kwan-woong. “Structural analysis, design and optimization of nonlinear control systems using the linear algebraic equivalence of nonlinear controllers.” 2003. Doctoral Dissertation, University of Texas – Austin. Accessed January 20, 2021. http://hdl.handle.net/2152/620.

MLA Handbook (7^th Edition):

Gwak, Kwan-woong. “Structural analysis, design and optimization of nonlinear control systems using the linear algebraic equivalence of nonlinear controllers.” 2003. Web. 20 Jan 2021.

Vancouver:

Gwak K. Structural analysis, design and optimization of nonlinear control systems using the linear algebraic equivalence of nonlinear controllers. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2003. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2152/620.

Council of Science Editors:

Gwak K. Structural analysis, design and optimization of nonlinear control systems using the linear algebraic equivalence of nonlinear controllers. [Doctoral Dissertation]. University of Texas – Austin; 2003. Available from: http://hdl.handle.net/2152/620

University of Newcastle

19. Mohammadalipour Tofighi, Elham. Robust nonlinear model predictive control of wind turbines using uncertain wind predictions.

Degree: PhD, 2019, University of Newcastle

URL: http://hdl.handle.net/1959.13/1406261

►

Research Doctorate - Doctor of Philosophy (PhD)

Efficient wind turbine control can enhance the performance of the wind turbine operation by increasing the energy yield… (more)

Subjects/Keywords: wind turbine control; robust control; NMPC; nonlinear model predictive control; optimization

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APA (6^th Edition):

Mohammadalipour Tofighi, E. (2019). Robust nonlinear model predictive control of wind turbines using uncertain wind predictions. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1406261

Chicago Manual of Style (16^th Edition):

Mohammadalipour Tofighi, Elham. “Robust nonlinear model predictive control of wind turbines using uncertain wind predictions.” 2019. Doctoral Dissertation, University of Newcastle. Accessed January 20, 2021. http://hdl.handle.net/1959.13/1406261.

MLA Handbook (7^th Edition):

Mohammadalipour Tofighi, Elham. “Robust nonlinear model predictive control of wind turbines using uncertain wind predictions.” 2019. Web. 20 Jan 2021.

Vancouver:

Mohammadalipour Tofighi E. Robust nonlinear model predictive control of wind turbines using uncertain wind predictions. [Internet] [Doctoral dissertation]. University of Newcastle; 2019. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1959.13/1406261.

Council of Science Editors:

Mohammadalipour Tofighi E. Robust nonlinear model predictive control of wind turbines using uncertain wind predictions. [Doctoral Dissertation]. University of Newcastle; 2019. Available from: http://hdl.handle.net/1959.13/1406261

University of Adelaide

20. Tang, Difan. Active Suppression ofAerofoil Flutter via Neural-Network-Based Adaptive Nonlinear Optimal Control.

Degree: 2019, University of Adelaide

URL: http://hdl.handle.net/2440/123093

► This thesis deals with active flutter suppression (AFS) on aerofoils via adaptive nonlinear optimal control using neural networks (NNs). Aeroelastic flutter can damage aerofoils if… (more)

▼ This thesis deals with active flutter suppression (AFS) on aerofoils via adaptive nonlinear optimal control using neural networks (NNs). Aeroelastic flutter can damage aerofoils if not properly controlled. AFS not only ensures flutter-free flight but also enables the use of aerodynamically more efficient lightweight aerofoils. However, existing optimal controllers for AFS are generally susceptible to modelling errors while other controllers less prone to uncertainties do not provide optimal control. This thesis, thus, aims to reduce the impact of the dilemma by proposing new solutions based on nonlinear optimal control online synthesis (NOCOS) according to online updated dynamics. Existing NOCOS methods, with NNs as essential elements, require a separate initial stabilising control law for the overall system, an additional stabilising tuning loop for the actor NN, or an additional stabilising term in the critic NN tuning law, to guarantee the closed-loop stability for unstable and marginally stable systems. The resulting complexity is undesired in AFS applications due to computational concerns in real-time implementation. Moreover, the existing NOCOS methods are confined to locally nonlinear systems, while aeroelastic systems under consideration are globally nonlinear. These make all the existing NOCOS algorithms inapplicable to AFS without modification and improvement. Therefore, this thesis solves the aforementioned problems through the following step-by-step approaches. Firstly, a four degrees-of-freedom (4-DOF) aeroelastic model is considered, where leading- and trailing-edge control surfaces of the aerofoil are used to actively suppress flutter. Accordingly, a virtual stiffness-damping system (VSDS) is developed to simulate physical stiffness in the aeroelastic system. The VSDS, together with a scaled-down typical aerofoil section placed in a wind tunnel, serve as an experimental 4-DOF aeroelastic test-bed for synthesis and validation of proposed AFS controllers that follow. Secondly, a Modified form of NN-based Value Function Approximation (MVFA), tuned by gradient-descent learning, is proposed for NOCOS to address the closedloop stability in a compact controller configuration suitable for real-time implementation. Its validity and efficacy are examined by the Lyapunov stability analysis and numerical studies. Thirdly, a systematic procedure based on linear matrix inequalities is further proposed for synthesising a scheduled parameter matrix to generalise the MVFA to to globally nonlinear cases, so that the new NN controller suits AFS applications. In addition, the extended Kalman filter (EKF) is proposed for the new NN controller for fast parameter convergence. An identifier NN is also derived to capture and update aeroelastic dynamics in real time to mitigate the impact of modelling errors. Wind-tunnel experiments were conducted for validation. Finally, a non-quadratic functional is introduced to generalise the performance index to tackle the problem where control inputs are constrained. The feasibility of… Advisors/Committee Members: Chen, Lei (advisor), Tian, Zhao Feng (advisor), Hu, Eric (advisor), School of Chemical Engineering (school).

Subjects/Keywords: adaptive control; aeroelasticity; flutter; neural network; nonlinear control; optimal control; vibration

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APA (6^th Edition):

Tang, D. (2019). Active Suppression ofAerofoil Flutter via Neural-Network-Based Adaptive Nonlinear Optimal Control. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/123093

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tang, Difan. “Active Suppression ofAerofoil Flutter via Neural-Network-Based Adaptive Nonlinear Optimal Control.” 2019. Thesis, University of Adelaide. Accessed January 20, 2021. http://hdl.handle.net/2440/123093.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tang, Difan. “Active Suppression ofAerofoil Flutter via Neural-Network-Based Adaptive Nonlinear Optimal Control.” 2019. Web. 20 Jan 2021.

Vancouver:

Tang D. Active Suppression ofAerofoil Flutter via Neural-Network-Based Adaptive Nonlinear Optimal Control. [Internet] [Thesis]. University of Adelaide; 2019. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2440/123093.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tang D. Active Suppression ofAerofoil Flutter via Neural-Network-Based Adaptive Nonlinear Optimal Control. [Thesis]. University of Adelaide; 2019. Available from: http://hdl.handle.net/2440/123093

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

21. Mukherjee, Prasenjit. Robust and Adaptive Control Methods for Small Aerial Vehicles.

Degree: 2012, University of Waterloo

URL: http://hdl.handle.net/10012/7033

► Recent advances in sensor and microcomputer technology and in control and aeroydynamics theories has made small unmanned aerial vehicles a reality. The small size, low… (more)

▼ Recent advances in sensor and microcomputer technology and in control and aeroydynamics theories has made small unmanned aerial vehicles a reality. The small size, low cost and manoueverbility of these systems has positioned them to be potential solutions in a large class of applications. However, the small size of these vehicles pose significant challenges. The small sensors used on these systems are much noisier than their larger counterparts.The compact structure of these vehicles also makes them more vulnerable to environmental effects. This work develops several different control strategies for two sUAV platforms and provides the rationale for judging each of the controllers based on a derivation of the dynamics, simulation studies and experimental results where possible. First, the coaxial helicopter platform is considered. This sUAV’s dual rotor system (along with its stabilizer bar technology) provides the ideal platform for safe, stable flight in a compact form factor. However, the inherent stability of the vehicle is achieved at the cost of weaker control authority and therefore an inability to achieve aggressive trajectories especially when faced with heavy wind disturbances. Three different linear control strategies are derived for this platform. PID, LQR and H∞ methods are tested in simulation studies. While the PID method is simple and intuitive, the LQR method is better at handling the decoupling required in the system. However the frequency domain design of the H∞ control method is better at suppressing disturbances and tracking more aggressive trajectories. The dynamics of the quadrotor are much faster than those of the coaxial helicopter. In the quadrotor, four independent fixed pitch rotors provide the required thrust. Differences between each of the rotors creates moments in the roll, pitch and yaw directions. This system greatly simplifies the mechanical complexity of the UAV, making quadrotors cheaper to maintain and more accessible. The quadrotor dynamics are derived in this work. Due to the lack of any mechanical stabilization system, these quadrotor dynamics are not inherently damped around hover. As such, the focus of the controller development is on using nonlinear techniques. Linear quadratic regulation methods are derived and shown to be inadequate when used in zones moderately outside hover. Within nonlinear methods, feedback linearization techniques are developed for the quadrotor using an inner/outer loop decoupling structure that avoids more complex variants of the feedback linearization methodology. Most nonlinear control methods (including feedback linearization) assume perfect knowledge of vehicle parameters. In this regard, simulation studies show that when this assumption is violated the results of the flight significantly deteriorate for quadrotors flying using the feedback linearization method. With this in mind, an adaptation law is devised around the nonlinear control method that actively modifies the plant parameters in an effort to drive tracking errors to zero. In…

Subjects/Keywords: robotics; control; UAV; helicopters; autonomous; nonlinear systems; adaptive control; robust control

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mukherjee, P. (2012). Robust and Adaptive Control Methods for Small Aerial Vehicles. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/7033

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mukherjee, Prasenjit. “Robust and Adaptive Control Methods for Small Aerial Vehicles.” 2012. Thesis, University of Waterloo. Accessed January 20, 2021. http://hdl.handle.net/10012/7033.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mukherjee, Prasenjit. “Robust and Adaptive Control Methods for Small Aerial Vehicles.” 2012. Web. 20 Jan 2021.

Vancouver:

Mukherjee P. Robust and Adaptive Control Methods for Small Aerial Vehicles. [Internet] [Thesis]. University of Waterloo; 2012. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10012/7033.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mukherjee P. Robust and Adaptive Control Methods for Small Aerial Vehicles. [Thesis]. University of Waterloo; 2012. Available from: http://hdl.handle.net/10012/7033

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

22. Tang, Wentao. Methods Of Distributed And Nonlinear Process Control: Structuredness, Optimality And Intelligence.

Degree: PhD, Chemical Engineering, 2020, University of Minnesota

URL: http://hdl.handle.net/11299/215092

► Chemical processes are intrinsically nonlinear and often integrated into large-scale networks, which are difficult to control effectively. The traditional challenges faced by process control, as… (more)

▼ Chemical processes are intrinsically nonlinear and often integrated into large-scale networks, which are difficult to control effectively. The traditional challenges faced by process control, as well as the modern vision of transitioning industries into a smart manufacturing paradigm, requires the instillation of new perspectives and application of new methods to the control of chemical processes. The goal is to realize highly automated, efficient, well-performing and flexible control strategies for nonlinear, interconnected and uncertain systems. Motivated by this, in this thesis, the following three important aspects (objectives) for contemporary process control – structuredness, optimality, and intelligence – are discussed in the corresponding three parts. 1. For the control of process networks in a structured and distributed manner, a network-theoretic perspective is introduced, which suggests to find a decomposition of the problem according to the block structures in the network. Such a perspective is examined by sparse optimal control of Laplacian network dynamics. Community detection-based methods are proposed for input – output bipartite and variable-constraint network representations and applied to a benchmark chemical process. 2. For the optimality of control, we first derive a computationally efficient algorithm for nonconvex constrained distributed optimization with theoretically provable convergence properties – ELLADA, which is applied to distributed nonlinear model predictive control of a benchmark process system. We derive bilevel optimization formulations for the Lyapunov stability analysis of nonlinear systems, and stochastic optimization for optimally designing the Lyapunov function, which can be further integrated with the optimal process design problem. 3. Towards a more intelligent diagram of process control, we first investigate an advantageous Lie-Sobolev nonlinear system identification scheme and its effect on nonlinear model-based control. For model-free data-driven control, we discuss a distributed implementation of the adaptive dynamic programming idea. For chemical processes where states are mostly unmeasurable, dissipativity learning control (DLC) is proposed as a suitable framework of input – output data-driven control, and applied to several nonlinear processes. Its theoretical foundations are also discussed.

Subjects/Keywords: Data-driven control; Distributed control; Distributed optimization; Nonlinear systems; Process control

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tang, W. (2020). Methods Of Distributed And Nonlinear Process Control: Structuredness, Optimality And Intelligence. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/215092

Chicago Manual of Style (16^th Edition):

Tang, Wentao. “Methods Of Distributed And Nonlinear Process Control: Structuredness, Optimality And Intelligence.” 2020. Doctoral Dissertation, University of Minnesota. Accessed January 20, 2021. http://hdl.handle.net/11299/215092.

MLA Handbook (7^th Edition):

Tang, Wentao. “Methods Of Distributed And Nonlinear Process Control: Structuredness, Optimality And Intelligence.” 2020. Web. 20 Jan 2021.

Vancouver:

Tang W. Methods Of Distributed And Nonlinear Process Control: Structuredness, Optimality And Intelligence. [Internet] [Doctoral dissertation]. University of Minnesota; 2020. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/11299/215092.

Council of Science Editors:

Tang W. Methods Of Distributed And Nonlinear Process Control: Structuredness, Optimality And Intelligence. [Doctoral Dissertation]. University of Minnesota; 2020. Available from: http://hdl.handle.net/11299/215092

University of New South Wales

23. Wang, Ruigang. Flexible and Scalable Nonlinear Process Control Based on Contraction Theory.

Degree: Chemical Engineering, 2017, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/58092 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45385/SOURCE02?view=true

► Advances in information and network technology enable the development of ``Smart Plants", which are more agile, cost-effective and operating continuously close to the market. In… (more)

▼ Advances in information and network technology enable the development of ``Smart Plants", which are more agile, cost-effective and operating continuously close to the market. In response to the continuously varying feedstock supply and product market demand, the process operation strategy, including setpoints and economic stage costs, needs to be frequently updated to improve the process economy. This new paradigm requires: (1) a flexible and equilibrium-independent control design method, which does not need exact information on the setpoints; (2) an optimization-based online control approach that achieves optimal operational economy during the transitions; and (3) a scalable distributed control framework for large-scale interacted networked systems.In this thesis, a systematic, flexible and scalable control design method based on contraction (a concept related to incremental stability) theory is developed. The main results include:(1) A constructive method is proposed to search for a pair of control contraction metric (CCM) and differential state feedback law for standalone systems. One advantage of the contraction-based method is that it allows for decoupling the control design from the prior knowledge of setpoints or references, which leads to an equilibrium-independent system analysis and control design approach. Another advantage is that the control synthesis can be formulated as a convex state-dependent LMI problem, which can be solved in a computational tractable way, \emph{e.g.}, using the sum-of-squares programming.(2) The above-proposed method is extended to distributed plantwide control by using the concept of differential dissipativity. Plantwide incremental exponential stability with respect to time-varying setpoints/references together with a bounded incremental L₂ gain condition for disturbance attenuation are achieved. The alternative direction method of multipliers (ADMM) algorithm is employed to solve the large-scale synthesis problem in a distributed manner.(3) A distributed economic model predictive control (DEMPC) scheme is developed by using the sum-separable CCM, which can be obtained from previous plantwide control design method. An exponentially shrinking tube constraint, which is a contraction inequality derived from the CCM, is added to the DEMPC formulation. The closed-loop stability under the proposed DEMPC is independent of the setpoints/references and economic stage cost functions. The proposed DEMPC can minimize self-interested operational costs for individual subsystems while achieving plantwide stability (for the networked system) through the ADMM algorithm.

Subjects/Keywords: Model Predictive Control; Nonlinear Control; Distributed Control; Contraction Theory; Smart Manufacturing

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APA (6^th Edition):

Wang, R. (2017). Flexible and Scalable Nonlinear Process Control Based on Contraction Theory. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/58092 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45385/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Wang, Ruigang. “Flexible and Scalable Nonlinear Process Control Based on Contraction Theory.” 2017. Doctoral Dissertation, University of New South Wales. Accessed January 20, 2021. http://handle.unsw.edu.au/1959.4/58092 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45385/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Wang, Ruigang. “Flexible and Scalable Nonlinear Process Control Based on Contraction Theory.” 2017. Web. 20 Jan 2021.

Vancouver:

Wang R. Flexible and Scalable Nonlinear Process Control Based on Contraction Theory. [Internet] [Doctoral dissertation]. University of New South Wales; 2017. [cited 2021 Jan 20]. Available from: http://handle.unsw.edu.au/1959.4/58092 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45385/SOURCE02?view=true.

Council of Science Editors:

Wang R. Flexible and Scalable Nonlinear Process Control Based on Contraction Theory. [Doctoral Dissertation]. University of New South Wales; 2017. Available from: http://handle.unsw.edu.au/1959.4/58092 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45385/SOURCE02?view=true

Delft University of Technology

24. Kumtepe, Yagiz (author). Flight Control Design Using Hybrid Incremental Nonlinear Dynamic Inversion.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:755193c5-9a83-47bc-a904-bfb0f2a4579a

►

Incremental Nonlinear Dynamic Inversion (INDI) is a sensor-based control strategy, which has shown robustness against model uncertainties on various aerospace vehicles. The sensor-based nature of… (more)

Subjects/Keywords: Hybrid control; INDI; Incremental Control; flight control; Incremental Nonlinear Dynamic Inversion

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APA (6^th Edition):

Kumtepe, Y. (. (2020). Flight Control Design Using Hybrid Incremental Nonlinear Dynamic Inversion. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:755193c5-9a83-47bc-a904-bfb0f2a4579a

Chicago Manual of Style (16^th Edition):

Kumtepe, Yagiz (author). “Flight Control Design Using Hybrid Incremental Nonlinear Dynamic Inversion.” 2020. Masters Thesis, Delft University of Technology. Accessed January 20, 2021. http://resolver.tudelft.nl/uuid:755193c5-9a83-47bc-a904-bfb0f2a4579a.

MLA Handbook (7^th Edition):

Kumtepe, Yagiz (author). “Flight Control Design Using Hybrid Incremental Nonlinear Dynamic Inversion.” 2020. Web. 20 Jan 2021.

Vancouver:

Kumtepe Y(. Flight Control Design Using Hybrid Incremental Nonlinear Dynamic Inversion. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Jan 20]. Available from: http://resolver.tudelft.nl/uuid:755193c5-9a83-47bc-a904-bfb0f2a4579a.

Council of Science Editors:

Kumtepe Y(. Flight Control Design Using Hybrid Incremental Nonlinear Dynamic Inversion. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:755193c5-9a83-47bc-a904-bfb0f2a4579a

Delft University of Technology

25. Matamoros Cid, Ismael (author). Nonlinear Control Allocation for a High-Performance Tailless Aircraft with Innovative Control Effectors: An Incremental Robust Approach.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:9650d852-c60f-4ab4-ac2d-1592ab9c7b6d

►

Conventional linear control allocation (LCA) methods fail to provide satisfactory performance in flight control systems (FCS) for aircraft with highly nonlinear and coupled control effector… (more)

Subjects/Keywords: Control Allocation; ICE; Incremental Control; Nonlinear Control Allocation; Flight Control Systems; Innovative Control Effectors

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Matamoros Cid, I. (. (2017). Nonlinear Control Allocation for a High-Performance Tailless Aircraft with Innovative Control Effectors: An Incremental Robust Approach. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:9650d852-c60f-4ab4-ac2d-1592ab9c7b6d

Chicago Manual of Style (16^th Edition):

Matamoros Cid, Ismael (author). “Nonlinear Control Allocation for a High-Performance Tailless Aircraft with Innovative Control Effectors: An Incremental Robust Approach.” 2017. Masters Thesis, Delft University of Technology. Accessed January 20, 2021. http://resolver.tudelft.nl/uuid:9650d852-c60f-4ab4-ac2d-1592ab9c7b6d.

MLA Handbook (7^th Edition):

Matamoros Cid, Ismael (author). “Nonlinear Control Allocation for a High-Performance Tailless Aircraft with Innovative Control Effectors: An Incremental Robust Approach.” 2017. Web. 20 Jan 2021.

Vancouver:

Matamoros Cid I(. Nonlinear Control Allocation for a High-Performance Tailless Aircraft with Innovative Control Effectors: An Incremental Robust Approach. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Jan 20]. Available from: http://resolver.tudelft.nl/uuid:9650d852-c60f-4ab4-ac2d-1592ab9c7b6d.

Council of Science Editors:

Matamoros Cid I(. Nonlinear Control Allocation for a High-Performance Tailless Aircraft with Innovative Control Effectors: An Incremental Robust Approach. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:9650d852-c60f-4ab4-ac2d-1592ab9c7b6d

Texas A&M University

26. Lewallen, Colby Foster. Novel Active Magnetic Bearing Control for a High-Speed Flywheel.

Degree: MS, Mechanical Engineering, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/158082

► Flywheel energy storage (FES) systems have recently gained momentum in the energy storage industry as a viable alternative to conventional lithium-ion and lead-acid batteries because… (more)

▼ Flywheel energy storage (FES) systems have recently gained momentum in the energy storage industry as a viable alternative to conventional lithium-ion and lead-acid batteries because they have superior energy density, faster charge rates, lack harmful chemicals, and are easy to repair. Contemporary FES research is focused on increasing the maximum operating speed of the rotor and reducing the power consumed by the active magnetic bearings. Therefore, the objective of this research was to implement a novel nonlinear controller called ‘wavelet-based time-frequency control’ (WFXLMS) in a computer simulation of a FES system with five degrees-of-freedom and compare its dynamic stability and active power consumption with a proportional-integral-derivative (PID) and fuzzy-logic controller scheme. Specifically, all three controllers were applied to a FES system operating at a high rate of speed and the amplitude of vibration, rate of convergence, and current draw were compared. The results show that the ideal choice for a FES system is the WFXLMS controller. While it did draw the largest maximum current of any system, it used significantly less (half of PID and a quarter of fuzzy-logic’s) steady state current. This would drastically improve the energy storage duration; one of the main functions of a FES system. The WFXLMS controller is also the ideal system for higher operating speeds because of the system’s stability in the frequency domain. Comparing the average displacements shows that the WFXLMS controller had the largest average displacement (particularly in the z- axis), but the WFXLMS controller only used a fraction of the available clearance gap. If the FES system was used in an environment like space or a wind-farm where external excitations are limited, the WFXLMS controller is the clear choice. However, if external excitations are a real concern, the PID and fuzzy-logic controllers demonstrated a much quicker reaction time and would be the better choice. Advisors/Committee Members: Suh, Steve (advisor), Tai, Bruce (committee member), Wang, Jyhwen (committee member).

Subjects/Keywords: Nonlinear; wavelet; control; flywheel; energy; storage

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lewallen, C. F. (2016). Novel Active Magnetic Bearing Control for a High-Speed Flywheel. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/158082

Chicago Manual of Style (16^th Edition):

Lewallen, Colby Foster. “Novel Active Magnetic Bearing Control for a High-Speed Flywheel.” 2016. Masters Thesis, Texas A&M University. Accessed January 20, 2021. http://hdl.handle.net/1969.1/158082.

MLA Handbook (7^th Edition):

Lewallen, Colby Foster. “Novel Active Magnetic Bearing Control for a High-Speed Flywheel.” 2016. Web. 20 Jan 2021.

Vancouver:

Lewallen CF. Novel Active Magnetic Bearing Control for a High-Speed Flywheel. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1969.1/158082.

Council of Science Editors:

Lewallen CF. Novel Active Magnetic Bearing Control for a High-Speed Flywheel. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/158082

Penn State University

27. Yang, Manda. development of efficient modeling and diffusion control approaches of nonlinear spatially distributed processes.

Degree: 2018, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/15022mxy192

► The distributed parameter system (DPS) is of significant importance in many chemical and material industry processes. This kind of systems shows spatial variation because of… (more)

Subjects/Keywords: distributed parameter system; nonlinear control; model reduction

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yang, M. (2018). development of efficient modeling and diffusion control approaches of nonlinear spatially distributed processes. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/15022mxy192

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yang, Manda. “development of efficient modeling and diffusion control approaches of nonlinear spatially distributed processes.” 2018. Thesis, Penn State University. Accessed January 20, 2021. https://submit-etda.libraries.psu.edu/catalog/15022mxy192.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yang, Manda. “development of efficient modeling and diffusion control approaches of nonlinear spatially distributed processes.” 2018. Web. 20 Jan 2021.

Vancouver:

Yang M. development of efficient modeling and diffusion control approaches of nonlinear spatially distributed processes. [Internet] [Thesis]. Penn State University; 2018. [cited 2021 Jan 20]. Available from: https://submit-etda.libraries.psu.edu/catalog/15022mxy192.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yang M. development of efficient modeling and diffusion control approaches of nonlinear spatially distributed processes. [Thesis]. Penn State University; 2018. Available from: https://submit-etda.libraries.psu.edu/catalog/15022mxy192

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Newcastle

28. Salton, Aurélio Tergolina. Preview control of dual-stage actuators.

Degree: 2011, University of Newcastle

URL: http://hdl.handle.net/1959.13/916017

►

Higher Doctorate - Doctor of Philosophy (PhD)

The vast majority of control theory has focused on the stability of dynamical systems as opposed to their… (more)

▼

Higher Doctorate - Doctor of Philosophy (PhD)

The vast majority of control theory has focused on the stability of dynamical systems as opposed to their performance, a consequence of the fact that an unstable system may be considered an engineering disaster. However, it is according to how well a system performs that it is defined as good or bad, making stability a necessary, but not sufficient condition for a successful design. Any closed loop system should simultaneously achieve the necessary stability property along with the desirable performance criteria. In motion control, performance criteria commonly concerns the system’s ability to accurately and promptly track a desired reference. Of paramount importance towards the improvement of both these goals was the development of the Dual-Stage Actuators (DSA) concept. This thesis exposes the author's and collaborators work on the development of new control methods that improve the DSA ability to promptly transition its output from one reference level to another. The main achievements of this work include the design and control of a novel DSA prototype, the development of new fast tracking servomechanisms focused on improving the performance of the slow actuator, and a novel integrated design that fully explores the redundancy of actuators. The integrated DSA control design makes use of future information in order to compute a pair of inputs to be applied before the output transition time, hence, it came to be known as Preview Control. The author hopes the material presented in this thesis will show that the integration of the novel fast tracking servomechanisms with the Preview Control strategy provides remarkable performance improvements to dual-stage systems. Experimental results are presented throughout the thesis in order to clarify and validate the proposed designs.

Advisors/Committee Members: University of Newcastle. Faculty of Engineering and Built Environment, School of Electrical Engineering and Computer Science.

Subjects/Keywords: nonlinear control; dual-stage actuator; servomechanisms

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APA (6^th Edition):

Salton, A. T. (2011). Preview control of dual-stage actuators. (Thesis). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/916017

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Salton, Aurélio Tergolina. “Preview control of dual-stage actuators.” 2011. Thesis, University of Newcastle. Accessed January 20, 2021. http://hdl.handle.net/1959.13/916017.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Salton, Aurélio Tergolina. “Preview control of dual-stage actuators.” 2011. Web. 20 Jan 2021.

Vancouver:

Salton AT. Preview control of dual-stage actuators. [Internet] [Thesis]. University of Newcastle; 2011. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1959.13/916017.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Salton AT. Preview control of dual-stage actuators. [Thesis]. University of Newcastle; 2011. Available from: http://hdl.handle.net/1959.13/916017

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Johannesburg

29. Mavungu, Masiala. Nonlinear control of an autonomous vehicle.

Degree: 2014, University of Johannesburg

URL: http://hdl.handle.net/10210/9355

►

M.Sc. (Mathematical Statistics)

This dissertation deals with the computation of nonlinear control strategies for an autonomous vehicle. The vehicle consists of two wheels attached to… (more)

Subjects/Keywords: Nonlinear control theory; Automated guided vehicle systems

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APA (6^th Edition):

Mavungu, M. (2014). Nonlinear control of an autonomous vehicle. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/9355

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mavungu, Masiala. “Nonlinear control of an autonomous vehicle.” 2014. Thesis, University of Johannesburg. Accessed January 20, 2021. http://hdl.handle.net/10210/9355.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mavungu, Masiala. “Nonlinear control of an autonomous vehicle.” 2014. Web. 20 Jan 2021.

Vancouver:

Mavungu M. Nonlinear control of an autonomous vehicle. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10210/9355.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mavungu M. Nonlinear control of an autonomous vehicle. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/9355

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto

30. Beauchamp, Nicholas Daniel. Lyapunov-based Stability Analysis for a MIMO Counter-Propagating Raman Amplifier.

Degree: 2014, University of Toronto

URL: http://hdl.handle.net/1807/68554

►

We consider the power stabilization problem for a Raman amplifier with an arbitrary number of pumps and signals. The system under consideration is counter-propagating, in… (more)

Subjects/Keywords: Control; Feedback; Lyapunov; Nonlinear; Optical; Raman; 0537

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APA (6^th Edition):

Beauchamp, N. D. (2014). Lyapunov-based Stability Analysis for a MIMO Counter-Propagating Raman Amplifier. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/68554

Chicago Manual of Style (16^th Edition):

Beauchamp, Nicholas Daniel. “Lyapunov-based Stability Analysis for a MIMO Counter-Propagating Raman Amplifier.” 2014. Masters Thesis, University of Toronto. Accessed January 20, 2021. http://hdl.handle.net/1807/68554.

MLA Handbook (7^th Edition):

Beauchamp, Nicholas Daniel. “Lyapunov-based Stability Analysis for a MIMO Counter-Propagating Raman Amplifier.” 2014. Web. 20 Jan 2021.

Vancouver:

Beauchamp ND. Lyapunov-based Stability Analysis for a MIMO Counter-Propagating Raman Amplifier. [Internet] [Masters thesis]. University of Toronto; 2014. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1807/68554.

Council of Science Editors:

Beauchamp ND. Lyapunov-based Stability Analysis for a MIMO Counter-Propagating Raman Amplifier. [Masters Thesis]. University of Toronto; 2014. Available from: http://hdl.handle.net/1807/68554

Open Access Theses and Dissertations