Optimal Specified-Structure Controller Design for a Linear Process using Output Feedback

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Mabodi, Mohsen | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 39705 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Mobed, Mohammad; Karimi Ghartemani, Masoud
Abstract:
The problem of LQR design based on full state feedback is solved completely in the subject of Optimal Control. So far, however, despite the fact that use of output feedback in many applications of Control is desirable or even necessary, designing optimal controllers using output feedback in general does not seem to have received much attention in the existing literature. Of course, special cases of designing simple controllers using analytical or numerical-analytical methods do exist in the literature. A new algorithm for tuning an optimal controller (P, PI, PID, etc) for a low-order system without delay, and also in the presence of delay, has been introduced in this thesis using the LQR method. A new method for selecting the Q and R matrices leading to desirable natural frequency and damping ratio for the closed-loop system has been introduced.
Keywords:
Optimization ; Proportional-Integral (PI)Controller ; Proportional-Integral-Derivative (PID)Controller ; Linear Quadratic Requlator (LQR) ; Optimal Specified-Structure Controller ; Output Feedback