Joint state and multi-innovation parameter estimation for time-delay linear systems and its convergence based on the Kalman filtering

被引:109
作者
Ding, Feng [1 ,2 ]
Wang, Xuehai [2 ,3 ]
Mao, Li [2 ]
Xu, Ling [2 ]
机构
[1] Nanchang Hangkong Univ, Sch Informat Engn, Nanchang 330063, Jiangxi, Peoples R China
[2] Jiangnan Univ, Sch Internet Things Engn, Wuxi 214122, Peoples R China
[3] Xinyang Normal Univ, Coll Math & Stat, Xinyang 464000, Peoples R China
基金
中国国家自然科学基金;
关键词
Parameter estimation; Kalman filtering; Multi-innovation identification; Time-delay system; SUBSPACE IDENTIFICATION; SPACE SYSTEMS; ALGORITHM;
D O I
10.1016/j.dsp.2016.11.010
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper studies the joint state and parameter estimation problem for a linear state space system with time-delay. A multi-innovation gradient algorithm is developed based on the Kalman filtering principle. To improve the convergence rate, a filtering based multi-innovation gradient algorithm is proposed by using the filtering technique. The analysis indicates that the parameter estimates given by the proposed algorithms converge to their true values under the persistent excitation conditions. A simulation example is given to confirm that the proposed algorithms are effective. (C) 2016 Elsevier Inc. All rights reserved.
引用
收藏
页码:211 / 223
页数:13
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