有界随机测量时滞的网络控制系统的最优估计

Optimal estimation for networked control systems with bounded random measurement delays

中文关键词  最优估计  随机测量时滞  网络控制系统  新息分析法  Riccati方程

英文关键词  optimal estimation  random measurement delays  networked control systems  innovation analysis  Riccati equation

中文摘要

      在假设测量没有丢包的情况下, 研究了带有随机测量时滞的网络控制系统的最优估计问题. 利用已知的时 滞分布概率, 建立新的模型来描述随机时滞测量. 进一步将带有时滞的测量等价成每个通道是单时滞的多通道测 量, 从而利用新息重组方法, 通过求解黎卡提方程求解最优估计器. 最后给出仿真实例验证了该算法的有效性.

英文摘要

      The optimal estimation problem is studied for networked control systems subject to random measurement delays and without packet loss. With the given probability distribution of the delays, a new model is proposed to describe the delay measurements. In order to solve the estimation problem, the measurement model with delays is written as an equivalent multiple channel measurement with each channel has a single constant delay. The optimal estimator is derived by using a reorganized innovation analysis approach, and is given in terms of Riccati difference equations. A simulation example illustrates the efficiency of the proposed method.