UIO for fault detection in vector second order systems

Author

Demetriou, Michael A.

Author_Institution

Dept. of Mech. Eng., Worcester Polytech. Inst., MA, USA

Volume

2

fYear

2001

fDate

2001

Firstpage

1121

Abstract

The purpose of the article is to construct natural observers for vector second order systems by utilizing unknown input observer (UIO) methods. This observer will subsequently be used in a robust fault detection scheme and also as an adaptive detection scheme for a certain class of actuator faults, wherein the time instance and characteristics of an incipient actuator fault are detected. Stability of the adaptive scheme is provided by a parameter-dependent Lyapunov function for second order systems. A numerical example on a mechanical system describing an automobile suspension system is used to illustrate the theoretical results

Keywords

Lyapunov methods; actuators; adaptive control; automobiles; fault diagnosis; mechanical variables control; observers; robust control; vectors; UIO; actuator faults; adaptive detection scheme; adaptive scheme; automobile suspension system; fault detection; incipient actuator fault; mechanical system; natural observers; parameter-dependent Lyapunov function; robust fault detection scheme; second order systems; time instance; unknown input observer methods; vector second order systems; Actuators; Circuit faults; Fault detection; Fluid dynamics; Lyapunov method; Mechanical systems; Observers; Stability; State estimation; Yield estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2001. Proceedings of the 2001

Conference_Location

Arlington, VA

ISSN

0743-1619

Print_ISBN

0-7803-6495-3

Type

conf

DOI

10.1109/ACC.2001.945870

Filename

945870