基于线性编码的随机时延和丢包下的状态估计  

State Estimator Using Linear Coding Subject to Random Data Delays and Dropouts

作　　者：卢建华 王元鑫 姜林君 高峰娟 LU Jian-hua;WANG Yuan-xin;JIANG Lin-jun;GAO Feng-juan(Naval Aviation University,Yantai Shandong 264001,China;Naval Aviation University Qingdao Branch,Qingdao Shandong 266041,China;91001 Troops,Beijing 100036,China)

机构地区：[1]海军航空大学,山东烟台264001 [2]海军航空大学青岛校区,山东青岛266041 [3]91001部队,北京100036

出　　处：《计算机仿真》2022年第1期49-55,共7页Computer Simulation

基　　金：国家自然科学基金(61473306);青年科学基金项目(61903374)。

摘　　要：关于具有数据随机传输时延和丢包的网络化状态估计问题,针对多个测量数据包同时到达远程处理中心的情况,为减轻计算负担,提出了一种线性编码方法对多个测量值进行线性重组进而用以推导估计器,并给出估计器稳定的充分条件。在最小方差原则下通过改变编码参数组合来改变估计器精度,通过算例仿真验证所提估计器的有效性。结果表明,上述估计器能够有效降低计算复杂度,在长时延的应用场景下具有重要的工程意义。The networked state estimation problem is investigated in the paper for a system with random data delays and dropouts. Firstly, aiming to deal with the arrival of multiple measurements at the remote processing center in the same sample period, a linear coding method that can reduce the computational burden was proposed to recombine multiple measurements to get the state estimator, and the sufficient condition for the existence of the steady-state estimator was given. Then, the estimated error could be adjusted by changing coding parameters. Finally, a simulation example was given to confirm the effectiveness of the proposed approach. The results show that the estimator can effectively reduce the computational complexity and is of great engineering significance in the application of long-delayed applications.

关 键 词：时延 丢包 线性编码 精度可调 网络化状态估计器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]