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On Fault Estimator Design for Linear Discrete Time-Varying Systems under Unreliable Communication Link

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  • Yueyang Li
  • Shuai Liu
  • Zhonghua Wang
  • Xuehua Yan

Abstract

This paper investigates the fixed-lag fault estimator design for linear discrete time-varying (LDTV) systems with intermittent measurements, which is described by a Bernoulli distributed random variable. Through constructing a novel partially equivalent dynamic system, the fault estimator design is converted into a deterministic quadratic minimization problem. By applying the innovation reorganization technique and the projection formula in Krein space, a necessary and sufficient condition is obtained for the existence of the estimator. The parameter matrices of the estimator are derived by recursively solving two standard Riccati equations. An illustrative example is provided to show the effectiveness and applicability of the proposed algorithm.

Suggested Citation

  • Yueyang Li & Shuai Liu & Zhonghua Wang & Xuehua Yan, 2014. "On Fault Estimator Design for Linear Discrete Time-Varying Systems under Unreliable Communication Link," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-10, July.
    • Handle: RePEc:hin:jnlmpe:358601
    DOI: 10.1155/2014/358601
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