Improved Parameter-dependent H∞ Filtering for Polytopic Delta Operator Systems |
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摘 要: | The problem of H∞ filtering for polytopic Delta operator linear systems is investigated. An improved H∞ performance criterion is presented based on the bounded real lemma. Upon the improved performance criterion, a sufficient condition for the existence of parameter-dependent H∞ filtering is derived in terms of linear matrix inequalities. The designed filter can be obtained from the solution of a convex optimization problem. The filter design makes full use of the parameter-dependent approach, which leads to a less conservative result than conventional design methods. A numerical example is given to illustrate the effectiveness of the proposed approach.
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关 键 词: | Delta算子系统 滤波 线性矩阵不等式 设计方法 有界实引理 凸优化问题 过滤器 线性系统 |
收稿时间: | 2008-1-25 |
修稿时间: | 2008-10-10 |
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