基于时滞脉冲系统方法的网络化H_∞滤波  

Networked H_∞ filtering via time-delay impulsive system

作　　者：周志勇 张大伟[1] 

机构地区：[1]山西大学数学科学学院,山西太原030006

出　　处：《云南民族大学学报（自然科学版）》2017年第6期478-484,共7页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：国家自然科学基金(61403240;61374059;U1610116)

摘　　要：研究了一类具有网络诱导时延和随机丢包的连续线性系统网络化H_∞滤波问题.考虑区间有界的网络诱导时延和伯努利分布刻画的丢包现象,将网络化滤波误差系统建模为一类带有重置方程的时滞脉冲系统.构造合适的Lyapunov-Krasovskii泛函并评估脉冲时刻的能量变化,以可求解的线性矩阵不等式形式设计滤波器,使得滤波误差系统均方渐近稳定并满足给定的H_∞干扰抑制水平.通过仿真验证设计方法有效性.The networked H_∞ filtering problem of a continuous-time linear system is addressed by taking network-induced delay and random packet loss into consideration. Due to the effect of bounded network-induced delays and random packet dropouts characterized by Bernoulli distribution,the networked filtering error system is modeled as a delay impulsive system with reset equations. Using an appropriate Lyapunov-Krasovskii approach and considering the energy change around the impulsive instants,the networked filter is designed in terms of solvable linear matrix inequalities so that the error system is asymptotically mean-square stable with prescribed H∞performance.A simulation example illustrates the effectiveness of the proposed method.

关 键 词：网络诱导时延 随机丢包 时滞脉冲系统 网络化H∞滤波 

分 类 号：TN713[电子电信—电路与系统]