Delay-dependent Non-fragile H∞ Filtering for Uncertain Fuzzy Systems Based on a Switching Fuzzy Model and Piecewise Lyapunov Function |
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基金项目: | This work was supported by National Natural Science Foundation of China (No. 60974139, No. 60804021) and Fundamental Research Funds for the Central Universities. |
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摘 要: | This paper is concerned with the non-fragile H∞ filter design problem for uncertain discrete-time Takagi-Sugeno (T-S) fuzzy systems with time delay. To begin with, the T-S fuzzy system is transformed to an equivalent switching fuzzy system. Then, based on the piecewise Lyapunov function and matrix decoupling technique, a new delay-dependent non-fragile H∞ filtering method is proposed for the switching fuzzy system. The proposed condition is less conservative than the previous results. Since only a set of LMIs is involved, the filter parameters can be solved directly. Finally, a design example is provided to illustrate the validity of the proposed method.
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关 键 词: | Lyapunov函数 模糊系统 时滞相关 非脆弱 滤波器 模糊模型 分段 切换 |
收稿时间: | 2009-11-09 |
修稿时间: | 2010-03-03 |
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