Title

Actuator fault diagnosis using High-Order Sliding Mode Differentiator (HOSMD) and its application to

Document Type

Conference Proceeding

Publication Date

12-1-2008

Publication Title

IFAC Proceedings Volumes (IFAC-PapersOnline)

Volume

17

Issue

1 PART 1

Keywords

Fault-tolerant, Nonlinear observer and filter design, Switching stability and control

Abstract

Actuator fault diagnosis problem is studied for a class of nonlinear systems with relative degrees from the inputs to the outputs higher than one. This type of nonlinear systems include many mechanical systems, and their actuator fault diagnosis problem can be very challenging because of nonlinearities and high relative degrees. In this paper, in order to solve the actuator fault diagnosis problem for the considered nonlinear systems, 2nd-order and 3rdorder sliding mode differentiators are used and actuator fault diagnosis schemes are proposed to achieve fault detection and isolation. Computer simulations are carried out to compare the efficacy of the proposed fault diagnosis schemes on a laboratory 3D Crane model with noisy measurements. The fault diagnosis schemes are further tested through experiments on a laboratory 3D Crane in terms of actuator fault detection and isolation. Copyright © 2007 International Federation of Automatic Control All Rights Reserved.

DOI

10.3182/20080706-5-KR-1001.2775

ISSN

14746670

ISBN

9783902661005

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