Title :
Brief paper - Dwell-time approach to L2-induced gain analysis of discrete-time switched systems subject to actuator saturation
Author :
Zhai, Shidong ; Xiao-Song Yang
Author_Institution :
Dept. of Electron. & Inf. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
This study investigates ℒ2-induced gain from the input disturbance to output of discrete-time switched linear systems subject to actuator saturation. With the state feedback gains adopted beforehand, the authors establish the linear matrix inequalities formulation which estimates the restricted ℒ2-induced gain for this class of switched systems by dwell-time approach. Then the authors investigate the influence of parameter variations on the restricted ℒ2-induced gain, and present a state feedback design method for a fixed dwell time and an upper bound of restricted ℒ2-induced gain. In addition, the authors investigate the qualitative relationship between disturbances rejection capability and dwell time. A numerical example is provided to illustrate the effectiveness of our obtained results.
Keywords :
actuators; control system synthesis; discrete time systems; linear matrix inequalities; state feedback; time-varying systems; L2-induced gain analysis; actuator saturation; discrete-time switched linear systems; disturbances rejection capability; dwell-time approach; linear matrix inequalities; parameter variations; state feedback design method; state feedback gains;
Journal_Title :
Control Theory & Applications, IET
DOI :
10.1049/iet-cta.2012.0508