Real time fault diagnosis of Infrared Earth Sensor using Elman neural network

Zhaohui Cen, Jiaolong Wei, Rui Jiang, Xiong Liu

Research output: Contribution to journalArticle

Abstract

An online fault detecting and isolating (FDI) method was proposed for fault diagnosis of Infrared Earth Sensor. The Elman neural network was employed due to its capability of processing time-varying signals in real time. For the sake of simplicity, two Elman neural networks were developed for fault detecting (FD) and fault isolating (FI) respectively. For FD, an FD Elman neural network and corresponding logic judgment were designed to identify normal and faulty states; the output of FD was the moment when a fault occurred. For FI, a novel gradient updating strategy was introduced in FI Elman neural network which does faulty pattern matching and conducts FI. Simulation results demonstrate that the FDI strategy is real time, convergent available for output coupling, general with time-varying signals. The proposed FDI can avoid modeling, so it is suitable for online FDI of satellite attitude control system (SACS).

Original languageEnglish
Pages (from-to)504-509
Number of pages6
JournalZhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis
Volume30
Issue number5
Publication statusPublished - 1 Oct 2010

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Keywords

  • Elman neural network
  • Fault detecting
  • Fault isolating
  • Infrared earth sensor
  • Real time fault diagnosis

ASJC Scopus subject areas

  • Instrumentation
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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