Observability and forward-backward observability of discrete-time nonlinear systems

被引：26
|
作者：
Albertini, F
D'Alessandro, D
机构：
[1] Univ Padua, Dipartimento Matemat Pura & Applicata, I-35100 Padua, Italy
[2] Iowa State Univ, Dept Math, Ames, IA 50011 USA
来源：
MATHEMATICS OF CONTROL SIGNALS AND SYSTEMS | 2002年 / 15卷 / 04期
关键词：
discrete-time systems; observability; geometric methods; invertible models;
D O I：
10.1007/s004980200011
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper we study the observability properties of nonlinear discrete-time systems. Two types of contributions are given. First we present observability criteria in terms of appropriate codistributions. For particular, but significant, classes of systems we provide criteria that require only a finite number of computations. Then we consider invertible systems (which includes discrete-time models obtained by sampling continuous-time systems) and prove that the weaker notion of forward-backward observability is equivalent to the stronger notion of (forward) observability.
引用
收藏
页码：275 / 290
页数：16
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