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You searched for subject:(Incremental estimation). Showing records 1 – 2 of 2 total matches.

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University College Cork

1. Vazquez-Gutierrez, Yeny. Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control.

Degree: 2019, University College Cork

This work studies the incremental optical encoder sensor and its impact on motor motion. The small-signal model of the sensor combined with the chosen speed estimation method is derived, experimentally validated and compared with existing models. A novel experimental setup emulates the encoder behaviour. Therefore, the sensor is isolated from the rest of the system (motor and driver) that unavoidably biases the dynamic study. The small-signal model demonstrates that the phase lag of the encoder increases as the speed and the resolution decreases. This increment of the delay adversely reduces the phase margin of the motion control-loop. In addition, a simple lead compensator is proposed and implemented on a DSP to recover correct performance of the motor (smooth rotation) previously degraded by the encoder. The coefficients of the proposed lead compensator adapt to the specific commanded speed automatically. As part of this thesis an improvement of the elapsed time (ET) method, that expands the use of this method to all speed ranges, is proposed. The Improved-ET speed estimation method has a good balance between static error and dynamic behaviour. Advisors/Committee Members: Kavanagh, Richard, O'Sullivan, Dara L., Hayes, John G..

Subjects/Keywords: Small-signal modeling; Incremental optical encoder; Speed estimation methods; Motion control

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

APA (6th Edition):

Vazquez-Gutierrez, Y. (2019). Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control. (Thesis). University College Cork. Retrieved from http://hdl.handle.net/10468/9530

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

Chicago Manual of Style (16th Edition):

Vazquez-Gutierrez, Yeny. “Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control.” 2019. Thesis, University College Cork. Accessed September 23, 2020. http://hdl.handle.net/10468/9530.

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

MLA Handbook (7th Edition):

Vazquez-Gutierrez, Yeny. “Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control.” 2019. Web. 23 Sep 2020.

Vancouver:

Vazquez-Gutierrez Y. Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control. [Internet] [Thesis]. University College Cork; 2019. [cited 2020 Sep 23]. Available from: http://hdl.handle.net/10468/9530.

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

Council of Science Editors:

Vazquez-Gutierrez Y. Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control. [Thesis]. University College Cork; 2019. Available from: http://hdl.handle.net/10468/9530

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

2. Zhang, Yuanci. Performance and ageing quantification of electrochemical energy storage elements for aeronautical usage : Evaluation des performances et du vieillissement des éléments de stockage d’énergie électrochimiques pour l’usage aéronautique.

Degree: Docteur es, Électronique, 2019, Bordeaux

Dans un contexte de progression du stockage d’énergie sous forme électrochimique dans les transports, notamment dans l’aéronautique, les problématiques de performance, de fiabilité, de sureté de fonctionnement et de durée de vie du stockeur sont essentielles pour utilisateurs. Cette thèse se focalise ces voltes pour l’avion plus électrique. Les technologies étudiées correspondent à des éléments commerciaux de dernière génération de type Lithium-ion (NMC/graphite+SiO, NCA/graphite, LFP/graphite, NMC/LTO), Lithium-Soufre (Li-S), supercondensateur et hybride (LiC). Une première partie de ce manuscrit s’attache à la quantification des performances des différents éléments dans l’environnement aéronautique [-20°C, 55°C] et pour l’usage aéronautique. Un modèle comportemental de type électro-thermique est développé et validé. La seconde partie est consacrée à la quantification du vieillissement des différents éléments. Les résultats de vieillissement calendaire et en cyclage actif sont présentés ainsi que ceux des tests abusifs. Une méthode d’estimation de l’état de santé (SOH) des éléments basés sur l’analyse de la capacité incrémentale (ICA) est proposée. Enfin, l’évaluation de la robustesse des éléments de stockage lors de tests de vieillissement accéléré avec un profil spécifique à l’usage aéronautique est proposé. Les modèles de vieillissement et la méthode d'estimation de SOH proposés précédemment sont utilisés ici pour évaluer l'impact de la température sur la vitesse de dégradation et pour estimer le SOH des cellules vieillies à l’aide de ce profil aéronautique.

In the context of progress in the electrochemical energy storage systems in the transport field, especially in the aeronautics, the issues of performance, reliability, safety and robustness of these elements are essential for users. This thesis is focused on these issues for the more electric aircraft. The technologies studied correspond to the latest generation commercial elements of Lithium-ion batteries (NMC/ graphite + SiO, NCA/graphite, LFP/graphite, NMC/LTO), Lithium-Sulfur (Li-S), Supercapacitor and Lithium-ion capacitors. The first part of this manuscript is dedicated to the performance quantification of the different electrochemical energy storage elements in aeronautical environment [-20°C, 55°C] and usage. An efficient and accurate electro-thermal model is developed and validated. The second part is devoted to the calendar and power cycling ageings as well as to the presentation of abuse testing results. A State Of Health (SOH) estimation based on incremental capacity analysis method is proposed. Finally, the robustness of the storage elements during accelerated ageing tests with a specific profile for the aeronautical usage is evaluated. The ageing models and SOH estimation methods proposed in the previous sections are used here to evaluate the impact of temperature on the degradation rate and to estimate the SOH of the cells with this aeronautical profile.

Advisors/Committee Members: Vinassa, Jean-Michel (thesis director), Briat, Olivier (thesis director).

Subjects/Keywords: Batteries lithium; Supercondensateurs; Lithium-ion capacitors; Performance; Basse température; Vieillissement calendaire; Cyclage actif; Tests abusifs; Modèle électro-thermique; Ragone non-isotherme; Loi de vieillissement; Estimation de SOH; Capacité incrémentale; Profil aéronautique; Lithium batteries; Supercapacitors; Lithium-ion capacitors; Performance; Low temperatures; Calendar ageing; Power cycling; Abuse testing; Electro-thermal model; Non-isothermal Ragone plot; Ageing laws; SOH estimation; Incremental capacity; Aeronautical profile

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

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

APA (6th Edition):

Zhang, Y. (2019). Performance and ageing quantification of electrochemical energy storage elements for aeronautical usage : Evaluation des performances et du vieillissement des éléments de stockage d’énergie électrochimiques pour l’usage aéronautique. (Doctoral Dissertation). Bordeaux. Retrieved from http://www.theses.fr/2019BORD0029

Chicago Manual of Style (16th Edition):

Zhang, Yuanci. “Performance and ageing quantification of electrochemical energy storage elements for aeronautical usage : Evaluation des performances et du vieillissement des éléments de stockage d’énergie électrochimiques pour l’usage aéronautique.” 2019. Doctoral Dissertation, Bordeaux. Accessed September 23, 2020. http://www.theses.fr/2019BORD0029.

MLA Handbook (7th Edition):

Zhang, Yuanci. “Performance and ageing quantification of electrochemical energy storage elements for aeronautical usage : Evaluation des performances et du vieillissement des éléments de stockage d’énergie électrochimiques pour l’usage aéronautique.” 2019. Web. 23 Sep 2020.

Vancouver:

Zhang Y. Performance and ageing quantification of electrochemical energy storage elements for aeronautical usage : Evaluation des performances et du vieillissement des éléments de stockage d’énergie électrochimiques pour l’usage aéronautique. [Internet] [Doctoral dissertation]. Bordeaux; 2019. [cited 2020 Sep 23]. Available from: http://www.theses.fr/2019BORD0029.

Council of Science Editors:

Zhang Y. Performance and ageing quantification of electrochemical energy storage elements for aeronautical usage : Evaluation des performances et du vieillissement des éléments de stockage d’énergie électrochimiques pour l’usage aéronautique. [Doctoral Dissertation]. Bordeaux; 2019. Available from: http://www.theses.fr/2019BORD0029

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