A New Approach to Robust Fault Detection and Identification

Document Type

Article

Publication Date

1-1-1993

Publication Title

IEEE Transactions on Aerospace and Electronic Systems

Volume

29

Issue

3

First Page

685

Last Page

695

Abstract

A new methodology for instrument fault detection and identification (FDI) in linear dynamical systems subject to plant parameter variations or uncertainties is presented. At the heart of this approach Is a robust estimator for which the necessary and sufficient conditions to its existence are outlined. The robust estimator can simultaneously estimate the unmeasurable state variables of the system for the purpose of control, and provide necessary information for FDI purposes as well A novel feature of this approach is that it can actually identify the shape and magnitude of the failures. The scheme allows for fast and accurate FDI, and can account for structural uncertainties and variations In the parameters of the dynamical model of the system. The overall fault tolerant control system strategy proposed is verified through simulation studies performed on the control of a vertical takeoff and landing (VTOL) aircraft in the vertical plane. © 1993 IEEE

DOI

10.1109/7.220921

ISSN

00189251

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