Observer design of discrete-time T-S fuzzy systems via multi-instant augmented multi-indexed matrix approach

Observer design of discrete-time T-S fuzzy systems via multi-instant augmented multi-indexed matrix approach
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基于多瞬时增广多索引矩阵方法的离散时间T-S模糊系统的观测器设计

DOI:
10.1016/j.jfranklin.2015.05.023
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发表时间:
2015-07
影响因子:
4.1
通讯作者:
Peng Chen
Peng Chen
中科院分区:
计算机科学3区
文献类型:
--
作者:
Xie Xiang-Peng;Yue Dong;Peng Chen

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研究了离散时间Takagi-Sugeno(T-S)模糊系统的松弛观测器设计问题。在改进的齐次矩阵多项式框架下,通过发展一种有效的多时刻增广多指标矩阵方法,提出了一种新的松弛变量方法,该方法依赖于任意次多时刻归一化模糊加权函数的齐次多项式参数。由于多时刻归一化模糊权函数的代数性质被收集到一组增广的多指标矩阵中,因此可以在观测器设计中包含更多关于多时刻归一化模糊权函数的信息。结果表明,模糊观测器设计的松弛品质可以得到显著提高。最后,给出了两个数值算例,说明了所提结果的有效性。
The problem of relaxed observer design for discrete-time Takagi–Sugeno (T–S) fuzzy systems is addressed in this paper. With the framework of improved homogenous matrix polynomials, a novel kind of slack variable approach, which is homogenous polynomially parameter-dependent on multi-instant normalized fuzzy weighting functions with arbitrary degrees, is proposed by developing an efficient multi-instant augmented multi-indexed matrix approach. Since the algebraic properties of multi-instant normalized fuzzy weighting functions are collected into a set of augmented multi-indexed matrices, more information about multi-instant normalized fuzzy weighting functions can be involved into observer design. As a result, the relaxation quality of fuzzy observer design can be significantly improved. Finally, two numerical examples are given to illustrate the effectiveness of the proposed results.
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