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Indexed by:期刊论文

Date of Publication:2010-04-01

Journal:IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS

Included Journals:SCIE、EI

Volume:57

Issue:4

Page Number:310-314

ISSN No.:1549-7747

Key Words:Average dwell-time method; H-infinity control; networked control systems (NCSs); predictive control; switched system

Abstract:This brief focuses on the problem of H-infinity control for a class of networked control systems with time-varying delay in both forward and backward channels. Based on the average dwell-time method, a novel delay-compensation strategy is proposed by appropriately assigning the subsystem or designing the switching signals. Combined with this strategy, an improved predictive controller design approach in which the controller gain varies with the delay is presented to guarantee that the closed-loop system is exponentially stable with an H-infinity=norm bound for a class of switching signal in terms of nonlinear matrix inequalities. Furthermore, an iterative algorithm is presented to solve these nonlinear matrix inequalities to obtain a suboptimal minimum disturbance attenuation level. A numerical example illustrates the effectiveness of the proposed method.