Title
Stability analysis and controller synthesis for discrete-time delayed fuzzy systems via small gain theorem
Abstract
This paper investigates the problems of stability analysis and controller synthesis of discrete-time Takagi-Sugeno (T-S) fuzzy systems with time-varying delay via an input-output approach. The original system is reformulated as a feedback subsystem and a forward subsystem with two constant time delays and a delay ''uncertainty'' satisfying the scaled small gain theorem. The lifting method is employed to convert the forward subsystem to a delay-free system, where the main result concerning the stability analysis of the system is obtained based on the scaled small gain theorem. The merit of the new stability condition lies in its reduced conservatism, which is made possible by a more precise estimation of the time-varying delay. Additionally, a state-feedback controller is designed through the Lyapunov-Krasovskii functional approach combined with the utilization of the scaled small gain theorem. Two illustrative examples are given to demonstrate the less conservatism of the stability condition and the effectiveness of the controller design method.
Year
DOI
Venue
2013
10.1016/j.ins.2012.11.008
Inf. Sci.
Keywords
Field
DocType
delay-free system,forward subsystem,controller synthesis,stability analysis,fuzzy system,small gain theorem,constant time delay,controller design method,new stability condition,stability condition,time-varying delay,fuzzy systems
Mathematical optimization,Control theory,Functional approach,Controller design,Control theory,Conservatism,Fuzzy control system,Discrete time and continuous time,Small-gain theorem,Mathematics
Journal
Volume
ISSN
Citations 
226,
0020-0255
19
PageRank 
References 
Authors
0.70
23
3
Name
Order
Citations
PageRank
Zhicheng Li133327.40
Huijun Gao28923416.93
ramesh k agarwal3979.86