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Indexed by:期刊论文

Date of Publication:2009-10-01

Journal:INTERNATIONAL JOURNAL OF INNOVATIVE COMPUTING INFORMATION AND CONTROL

Included Journals:SCIE、EI、Scopus

Volume:5

Issue:10A

Page Number:3099-3108

ISSN No.:1349-4198

Key Words:Switched system; Fuzzy system; Switching law; Quadratic stability; Global model

Abstract:This paper considers the quadratic stability problem for a class of switched fuzzy (SF) systems. A new method based on a switching technique is presented to solve this problem. A switched fuzzy system, which differs front existing ones, is firstly employed to describe a nonlinear system, and then some new concepts about the innovated SF system are introduced. Usually, this class of systems can precisely describe continuous and discrete dynamics as well as their interactions in the complex real-world systems. Next, the switched state feedback controllers for the proposed SF systems are built to ensure that the relevant closed-loop System is quadratically stable. Finally, switching laws of the state-dependent form achieving system quadratic stability of the SF system are given. The main conditions are given in terms Of Convex combination and linear matrix inequalities (LMIs), hence they are easily solvable. The comparison of the elaborated example is conducted to demonstrate the effectiveness of the proposed control design approach. All results illustrate good control performances as desired.