Finite Time Converging Input Observers for Nonlinear Second-order Systems

被引：0

作者：

Moreno, Jaime A. ^{[1
]}

Dochain, D. ^{[2
,3
]}

机构：

[1] Univ Nacl Autonoma Mexico, Elect & Comp, Inst Ingn, Mexico City 04510, DF, Mexico

[2] FNRS, Brussels, Belgium

[3] Catholic Univ Louvain, CESAME, B-1348 Louvain La Neuve, Belgium

来源：

2013 IEEE 52ND ANNUAL CONFERENCE ON DECISION AND CONTROL (CDC) | 2013年

关键词：

unknown input; finite time convergence; state observer; nonlinear systems; ONLINE ESTIMATION; LINEAR-SYSTEMS; DETECTABILITY;

D O I：

暂无

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 propose a discontinuous observer able to estimate in finite time both unmeasured states and the unknown input of a SISO nonlinear second order system. The only requirements are the observability of both the states and the unknown input, and that the unknown input is a uniformly Lipschitz time function. We illustrate the method in a biological reactor that models the functioning of a Waste Water Treatment Plant (WWTP), for which the problem of estimating the unknown input is of practical relevance. For concreteness of the presentation we restrict the treatment to second order systems, but the idea can be extended to a more general context.

引用

页码：3554 / 3559

页数：6

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