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一类多项式族的鲁棒稳定性分析

Robust Stability Analysis for a Class of Polynomial Family
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摘要 考虑摄动参数呈多项式映射关系的一类多项式族的鲁棒稳定性分析问题.基于线性矩阵不等式(Linear Matrix Inequality,LMI)方法,给出了这类多项式族的稳定判据,以及多项式族的最大鲁棒稳定域估计.由于非线性解析函数可用多项式任意逼近,故该方法也可用于具有一般非线性参数摄动的多项式族的鲁棒稳定性分析.最后,通过算例验证了该方法的可行性. Robust stability analysis for a class of polynomial family with polynomial perturbation parameters is considered. Based on linear matrix inquality(LMI), a stability criterion is presented for the class of polynomial family. Moreover, a method is also provided to estimate the maximal stability domain. Since an analytic function can be arbitrary approximated by a polynomial, the provided methods can be applied to robust stability analysis of polynomial family with general non-linear perturbation parameters. Finally, an illustrative example is given to show the feasibility of the methods in practice.
出处 《中北大学学报(自然科学版)》 CAS 北大核心 2009年第5期439-442,共4页 Journal of North University of China(Natural Science Edition)
基金 山西省自然科学基金资助项目(20041050)
关键词 多项式族 鲁棒稳定性 稳定域 LMI 共同LYAPUNOV函数 polynomial family robust stability stability domain LMI common lyapunov function
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