Non-fragile H∞ filtering for discrete-time systems with finite word length consideration

被引：12

作者：

Che, Wei-Wei ^{[1
]}

Yang, Guang-Hong ^{[1
]}

机构：

[1] Key Laboratory of Integrated Automation for the Process Industry, College of Information Science and Engineering, Northeastern University, Shenyang 110004, China

来源：

Zidonghua Xuebao/Acta Automatica Sinica | 2008年 / 34卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Bandpass filters - Digital control systems - Robustness (control systems) - Discrete time control systems - Linear systems - Closed loop systems - Numerical methods;

D O I：

10.3724/SP.J.1004.2008.00886

中图分类号：

学科分类号：

摘要：

The nonfragile H∞ filtering problem affected by finite word length (FWL) for linear discrete-time systems is investigated in this paper. The filter to be designed is assumed to be with additive gain variations, which reflect the FWL effects on filter implementation. A notion of structured vertex separator is proposed to deal with the problem and exploited to develop sufficient conditions for the nonfragile H∞ filter design in terms of a set of linear matrix inequalities (LMIs). The design renders the augmented system asymptotically stable and guarantees the H∞ attenuation level less than a prescribed level. A numerical example is given to illustrate the effect of the proposed method.

引用

页码：886 / 892

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