摘 要:对一类伊藤型广义非线性随机系统的 H ∞滤波问题进行了研究。首先,给出了伊藤型广义非线性随机系统的 H ∞滤波问题的定义,并设计相应的广义滤波器;其次通过构造李雅普诺夫函数,利用线性矩阵不等式、伊藤公式等方法,使其滤波误差动态系统满足渐近均方容许和一定的 H ∞性能指标,并得到了广义滤波器相应的参数;最后,通过数值仿真验证所提出方法的有效性。
关键词:广义非线性随机系统;H ∞滤波;伊藤公式;线性矩阵不等式
DOI:10.19850/j.cnki.2096-4706.2022.08.022
基金项目: 山东省自然科学基金项目(ZR2019BF045);临沂大学“创新创业训练计划”项目(X202010452176)
中图分类号:TP13 文献标识码:A 文章编号:2096-4706(2022)08-0079-04
H∞ Filtering for a Class of Generalized Nonlinear Stochastic Systems
BU Lingtai, YANG Chunmei, ZHAO Feng, CHEN Xiangyong
(School of Automation and Electrical Engineering, Linyi University, Linyi 276005, China)
Abstract: This paper studies the H∞ filtering problem for a class of Ito-type generalized nonlinear stochastic systems. First, the definition of H ∞ filtering problem for Ito-type generalized nonlinear stochastic systems is given, and the corresponding generalized filter is designed; secondly, by constructing Lyapunov function, using linear matrix inequality, Ito formula and other methods, the filtering error dynamic system meets the asymptotic mean square tolerance and certain H ∞ performance index, and the corresponding parameters of the generalized filter are obtained; finally, the effectiveness of the proposed method is verified by numerical simulation.
Keywords: generalized nonlinear stochastic system; H ∞ filtering; Ito formula; linear matrix inequality
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作者简介:卜令泰(2000.05—),男,汉族,山东菏泽人,本科在读,研究方向:随机系统滤波器设计;杨春梅(1998.10—),女,汉族,山东临沂人,本科在读,研究方向:非线性系统控制;通讯作者:赵峰(1986.01—),男,汉族,山东临沂人,硕士研究生,副教授,研究方向:非线性随机系统控制;陈向勇(1983.05—),男,汉族,山东临沂人,硕士研究生,副教授,研究方向:复杂系统与复杂网络控制。