HOSM Observer for a Class of Non-Minimum Phase Causal Nonlinear MIMO Systems

Author

Shtessel, Yuri B. ; Baev, Simon ; Edwards, Christopher ; Spurgeon, Sarah

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Alabama, Huntsville, AL, USA

Volume

55

Issue

2

fYear

2010

Firstpage

543

Lastpage

548

Abstract

A higher order sliding mode observer is proposed for asymptotic identification of the full state vector and the vector of unknown inputs for MIMO nonlinear causal systems with unstable internal dynamics. The problem is addressed via consistent application of exact higher order sliding mode differentiators in conjunction with the method of stable system center. A numerical example illustrates the performance of the proposed algorithm.

Keywords

MIMO systems; nonlinear systems; observers; variable structure systems; HOSM observer; asymptotic identification; full state vector; higher order sliding mode observer; nonminimum phase causal nonlinear MIMO system; stable system center; unstable internal dynamics; Algebra; Automatic control; Control systems; Discrete event systems; Linear systems; MIMO; Nonlinear control systems; Nonlinear dynamical systems; Nonlinear systems; Observers; Open loop systems; Robust control; Sliding mode control; State estimation; Vehicle dynamics; Vehicles; Causal; higher order sliding mode (HOSM); nonlinear; nonminimum phase (NMP); observer;

fLanguage

English

Journal_Title

Automatic Control, IEEE Transactions on

Publisher

ieee

ISSN

0018-9286

Type

jour

DOI

10.1109/TAC.2009.2037478

Filename

5373828