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		Weiwei CHE,Guanghong YANG.[en_title][J].Control Theory and Technology,2009,7(1):63~.[Copy]

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WeiweiCHE,GuanghongYANG
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Received:April 27, 2007Revised:October 19, 2007

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Non-fragile state feedback H-infinity control for discrete-time systems with quantized signals

Weiwei CHE, Guanghong YANG

(Key Laboratory of Integrated Automation for the Process Industry, Ministry of Education, College of Information Science and Engineering, Northeastern University, Shenyang Liaoning 110004, China)

Abstract:

This paper presents a study on the problem of non-fragile state feedback H-infinity controller design for linear discrete-time systems with quantized signals. The quantizers considered here are dynamic and time-varying. With the consideration of controller gain variations and quantized signals at the same time, a new non-fragile H-infinity control strategy is proposed with updating quantizer’s parameters, such that the quantized closed-loop system is asymptotically stable and with a prescribed H-infinity performance bound. An example is presented to illustrate the effectiveness of the proposed control strategy.

Key words: Linear systems Non-fragile Dynamic quantizer H-infinity control LMI