State estimation subject to random communication delays

被引：1
作者：
Yang, Yuan-Hua [1 ]
Fu, Min-Yue [2 ]
Zhang, Huan-Shui [1 ]
机构：
[1] School of Control Science and Engineering, Shandong University
[2] School of Electrical Engineering and Computer Science, University of Newcastle
来源：
Zidonghua Xuebao/Acta Automatica Sinica | 2013年 / 39卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Networked control systems; Random time delay; Riccati equations; State estimation;
D O I：
10.3724/SP.J.1004.2013.00237
中图分类号：
学科分类号：
摘要：
The state estimation problem is studied for the networked control systems subject to random communication delays and the measurements without time stamps. With the random delay bounded by one step only, a new measurement model is proposed for possibly out-of-sequence measurements. For unstable systems, to guarantee that the estimator is linear unbiased and the estimation error covariance is uniformly bounded, we show that the estimator structure is given based on the average of all received measurements at each time. The estimator gains can be derived by solving a set of recursive discrete-time Riccati equations. The estimator is guaranteed to be optimal in the sense that it is unbiased with uniformly bounded estimation error covariance. A simulation example shows the effectiveness of the proposed algorithm. Copyright © 2013 Acta Automatica Sinica.
引用
收藏
页码：237 / 243
页数：6
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