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State and output feedback design for robust tracking of linear systems with rate limited actuators
Author(s) -
Lin Zongli,
Pachter Meir,
Banda Siva,
Shamash Yacov
Publication year - 2002
Publication title -
optimal control applications and methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.458
H-Index - 44
eISSN - 1099-1514
pISSN - 0143-2087
DOI - 10.1002/oca.700
Subject(s) - control theory (sociology) , actuator , control engineering , computer science , observer (physics) , linear system , state observer , piecewise linear function , control (management) , engineering , nonlinear system , mathematics , artificial intelligence , mathematical analysis , physics , geometry , quantum mechanics
Abstract A design technique ( Control of Uncertain Systems with Bounded Inputs , Tarbouriech S, Garcia G, (Eds), Lecture Notes in Control and Information Sciences, vol. 227 , Springer: Berlin, 1997; 173–186) recently proposed for stabilization of a linear system with rate‐limited actuators is utilized to design feedback laws that cause the system output to track a desired command signal. This design technique combines two design techniques recently developed for linear systems with position limited actuators, piecewise‐linear LQ control (Automatica, 1994; 30 : 403–416) and low‐and‐high gain feedback (IEEE Trans. Automat. Control, 1996; 41 : 368–378), and hence takes advantage of both design techniques, while avoiding their disadvantages. In the case that only the output is available for feedback, the performance of the state feedback law is preserved by the use of a fast observer. An open‐loop exponentially unstable fighter aircraft is used to demonstrate the effectiveness of the proposed control design method. Copyright © 2002 John Wiley & Sons, Ltd.