State and input simultaneous estimation for a class of time-delay systems with uncertainties

被引：38
|
作者：
Trinh, H. [1 ]
Ha, Q. P.
机构：
[1] Deakin Univ, Sch Engn & Informat Technol, Geelong, Vic 3217, Australia
[2] Univ Technol Sydney, Fac Engn, Sydney, NSW 2007, Australia
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2007年 / 54卷 / 06期
关键词：
reduced-order observer; simultaneous estimation; time delay; unknown input;
D O I：
10.1109/TCSII.2007.894425
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. brief addresses the problem of estimation of both the states and the unknown inputs of a class of systems that are subject to a time-varying delay in their state variables, to an unknown input, and also to an additive uncertain, nonlinear disturbance. Conditions are derived for the solvability of the design matrices of a reduced-order observer for state and input estimation, and for the stability of its dynamics. To improve computational efficiency, a delay-dependent asymptotic stability condition is then developed using the linear matrix inequality formulation. A design procedure is proposed and illustrated by a numerical example.
引用
收藏
页码：527 / 531
页数：5
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