Consistency and Asymptotic Property of a Weighted Least Squares Method for Networked Control Systems

doi:10.1016/j.cjche.2014.05.001

›› 2014, Vol. 22 ›› Issue (7): 754-761.DOI: 10.1016/j.cjche.2014.05.001

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Consistency and Asymptotic Property of a Weighted Least Squares Method for Networked Control Systems

Cong Zhang, Hao Ye

Tsinghua National Laboratory for Information Science and Technology, Department of Automation, Tsinghua University, Beijing 100084, China

Received:2013-12-27 Revised:2014-03-05 Online:2014-08-23 Published:2014-07-28
Supported by:
Supported by the National Natural Science Foundation of China (61290324).

Consistency and Asymptotic Property of a Weighted Least Squares Method for Networked Control Systems

Cong Zhang, Hao Ye

Tsinghua National Laboratory for Information Science and Technology, Department of Automation, Tsinghua University, Beijing 100084, China

通讯作者: Hao Ye
基金资助:
Supported by the National Natural Science Foundation of China (61290324).

Abstract

Abstract: In this paper,we study the problems related to parameter estimation of a single-input and single-output networked control system,which contains possible network-induced delays and packet dropout in both of sensor-to-controller path and controller-to-actuator path. A weighted least squares (WLS) method is designed to estimate the parameters of plant,which could overcome the data uncertainty problemcaused by delays and dropout. ThisWLSmethod is proved to be consistent and has a good asymptotic property. Simulation examples are given to validate the results.

Key words: Networked control system, Network-induced delay, Packet dropout, Weighted least squares, Consistency, Asymptotic property

摘要： In this paper,we study the problems related to parameter estimation of a single-input and single-output networked control system,which contains possible network-induced delays and packet dropout in both of sensor-to-controller path and controller-to-actuator path. A weighted least squares (WLS) method is designed to estimate the parameters of plant,which could overcome the data uncertainty problemcaused by delays and dropout. ThisWLSmethod is proved to be consistent and has a good asymptotic property. Simulation examples are given to validate the results.

关键词: Networked control system, Network-induced delay, Packet dropout, Weighted least squares, Consistency, Asymptotic property

Cong Zhang, Hao Ye. Consistency and Asymptotic Property of a Weighted Least Squares Method for Networked Control Systems[J]. , 2014, 22(7): 754-761.

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Consistency and Asymptotic Property of a Weighted Least Squares Method for Networked Control Systems

Consistency and Asymptotic Property of a Weighted Least Squares Method for Networked Control Systems

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