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ℋ_/ℋ Fault Detection and Isolation for Discrete-Time Delayed Systems

이산시간 상태지연 시스템을 위한 ℋ_/ℋ 고장검출 및 분리

  • Jee, Sung-Chul (School of Electronic Engineering, Inha University) ;
  • Lee, Ho-Jae (School of Electronic Engineering, Inha University)
  • Received : 2011.05.03
  • Accepted : 2011.09.02
  • Published : 2011.10.01

Abstract

In this paper, an $\mathfrak{H}$_/$\mathfrak{H}_{\infty}$ fault detection and isolation (FDI) observer design problem is investigated for discrete-time delayed systems. To that end, a bank consisting of the sensor's number of observers is introduced. Each residual should be sensitive to a certain partial group of faults, but robust against the disturbance as far as possible. We formulate this multiobjective FDI problem as $\mathfrak{H}$_/$\mathfrak{H}_{\infty}$ observers design problem. Sufficient design condition is expressed as iterative linear matrix inequalities. The fault is then detected and isolated by evaluating the residuals through an FDI decision logic. A computer simulation is provided for verification of the proposed technique.

Keywords

References

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