Observability of Discrete-Time LTI Systems Under Unknown Piece-Wise Constant Inputs

被引：0
|
作者：
Sharma, Vipul Kumar [1 ]
Tallapragada, Pavankumar [1 ,2 ]
机构：
[1] Indian Inst Sci, Dept Elect Engn, Bengaluru 560012, India
[2] Indian Inst Sci, Robert Bosch Ctr Cyber Phys Syst, Bengaluru 560012, India
来源：
IEEE CONTROL SYSTEMS LETTERS | 2021年 / 5卷 / 06期
关键词：
Observability; Privacy; Linear systems; Particle measurements; Observers; Electrical engineering; Atmospheric measurements; Networked control systems; sampled-data control; observability under unknown input; event-triggered control; privacy; SWITCHED LINEAR-SYSTEMS; DETECTABILITY; OBSERVERS;
D O I：
10.1109/LCSYS.2020.3044587
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter is on observability of discrete-time LTI systems under unknown piece-wise constant inputs with sufficiently slow, but arbitrary update times. Assuming knowledge of the update times, we characterize the unobservable subspace and show that with sufficiently many measurements in each inter-update interval of the input, the unobservable subspace remains fixed. We explore the implications of the result for privacy in event-triggered control through an illustrative example.
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页码：1886 / 1891
页数：6
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