A fault diagnosis scheme for time-varying fault using output probability density estimation

Yumin Zhang, Qing Guo Wang, Kai Yew Lum

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, a fault diagnosis scheme for a class of time-varying faults using output probability density estimation is presented. The system studied is a nonlinear system with time delays. The measured output is viewed as a stochastic process and its probability density function (PDF) is modeled, which leads to a deterministic dynamical model including nonlinearities, uncertainties. The fault considered in this paper is time-varying, piecewise continuous with finite discontinuous points. A new adaptive fault diagnosis algorithm is proposed. An ideal estimation of the fault and its modified form are analyzed. Simulation example is given to demonstrate the effectiveness of the proposed approaches.

Original languageEnglish
Title of host publication2008 American Control Conference, ACC
Pages4280-4285
Number of pages6
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event2008 American Control Conference, ACC - Seattle, WA, United States
Duration: 11 Jun 200813 Jun 2008

Publication series

NameProceedings of the American Control Conference
ISSN (Print)0743-1619

Conference

Conference2008 American Control Conference, ACC
Country/TerritoryUnited States
CitySeattle, WA
Period11/06/0813/06/08

Keywords

  • B-spline expansions
  • Fault detection and diagnosis
  • Observer design
  • Probability density function (PDF)
  • Time delays

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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