多包丢失的无线网络控制系统的滤波器设计  

H∞Filtering Design for Wireless Networked Control Systems with Multiple Packet Dropout

作　　者：马运强 武昌俊[2] 

机构地区：[1]安徽工程大学电气工程学院,安徽芜湖241000 [2]安徽机电职业技术学院电气工程系,安徽芜湖241002

出　　处：《四川理工学院学报（自然科学版）》2016年第6期16-20,共5页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

基　　金：安徽机电职业技术学院重点科研项目(2016zdzr12)

摘　　要：鉴于无线网络控制系统中多包丢失率不同和外部噪音干扰问题,研究了一类多包丢失的无线网络控制系统H_∞滤波器设计方法,以提高无线网络控制系统稳定性及鲁棒性。首先,引入随机伯努利序列搭建多传感器通道中丢包模型,并将每个通道丢包率转化为滤波误差系统的随机参数,进而将滤波问题转化为求解带有随机参数的滤波误差系统的H_∞性能指标问题;在此基础上,利用矩阵论和概率论原理将数据参数分解,通过LMIs形式给出H_∞滤波器存在的充分条件,所设计的滤波器能保证在外部能量有界噪音干扰信号,滤波误差系统的H_∞指标小于给定值γ。最后通过一个数值仿真示例验证了所设计滤波器的有效性。The method of H∞ filtering for wireless networked control systems is introduced to solve the problem of the different multiple packet dropout rate and noise interference,and to improve the stability and robustness of wireless networked control systems. First of all,the multiple packet dropouts are modeled by a Bernoulli random sequence and the packet dropout date in each channel is transformed into stochastic parameter of filtering error system,and then the problem of stochastic parameter of filtering is transformed into the H∞ performance index of filtering error system with stochastic parameter. Based on this,the sufficient condition for the existence of the H∞ filters are provided in terms of LMIs. The designed filter can guarantee a prescribed H∞ performance γ for filtering error system with all energy bounded noise interference signals. Finally,an example is given to illustrate the effectiveness of the designed filter.

关 键 词：无线网络控制系统 H∞滤波器 多数据丢包 随机变量 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]