Delayed observers for linear systems with unknown inputs

被引：106
|
作者：
Sundaram, Shreyas [1 ]
Hadjicostis, Christoforos N.
机构：
[1] Univ Illinois, Coordinated Sci Lab, Urbana, IL 61801 USA
[2] Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA
来源：
IEEE TRANSACTIONS ON AUTOMATIC CONTROL | 2007年 / 52卷 / 02期
基金：
美国国家科学基金会;
关键词：
state estimation; system inversion; unknown input observer;
D O I：
10.1109/TAC.2006.890371
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We present a method for constructing reduced-order state observers for linear systems with unknown inputs. Our approach provides a characterization of observers with delay, which eases the established necessary conditions for existence of unknown input observers with zero-delay. We develop a parameterization of the observer gain that decouples the unknown inputs from the estimation error, and we use the remaining freedom to ensure stability of the error dynamics. Our procedure is quite general in that it encompasses the design of full-order observers via appropriate choices of design matrices.
引用
收藏
页码：334 / 339
页数：6
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