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Transient performance for discrete‐time singular systems with actuators saturation via composite nonlinear feedback control
Author(s) -
Feng Yu,
Ho Daniel W.C.
Publication year - 2012
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.2930
Subject(s) - control theory (sociology) , nonlinear system , overshoot (microwave communication) , actuator , transient (computer programming) , transient response , plant , nonlinear control , controller (irrigation) , multivariable calculus , computer science , engineering , control engineering , control (management) , physics , agronomy , quantum mechanics , artificial intelligence , electrical engineering , biology , operating system , telecommunications
SUMMARY This paper is concerned with the transient performance improvement in tracking control problems for linear multivariable discrete‐time singular systems subject to actuators saturation. A composite nonlinear feedback control strategy is considered, and the resulting controller consists of a linear feedback law and a nonlinear feedback law without any switching element. The nonlinear term leads to a varying damping ratio of the closed‐loop system and yields a small overshoot as the output approaches the target reference, whereas the linear component is designed to achieve a quick response of the closed‐loop system. Two composite nonlinear feedback control laws by both state feedback and measurement output feedback are addressed. An illustrative example is included to show the validity of the obtained results. Copyright © 2012 John Wiley & Sons, Ltd.