Transactions on Control, Automation and Systems Engineering

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Fault Detection in Linear Descriptor Systems Via Unknown Input PI Observer

  • Hwan Seong kim (Dept. of Logistics Eng. Korea Maritime University, KOREA) ;
  • Yeu, Tae-Kyeong (Graduate School of Science & Technology, Kumamoto University, JAPAN) ;
  • Shigeyasy Kawaji (Graduate School of Science & Technology, Kumamoto University, JAPAN)
  • Published : 2001.06.01
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Abstract

This paper deals with a fault detection algorithm for linear descriptor systems via unknown input PI observer. An unknown input PI observer is presented and its realization conditions is proposed by using the rank condition of system matrices. From the characteristics of unknown input PI observer, the states of system with unknown inputs are estimated and the occurrences of fault are detected, and its magnitudes are estimated easily by using integrated output estimation error under the step faults. Finally, a numerical example is given to verify the effectiveness of the proposed fault detection algorithm.

Keywords

References

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