A set-membership approach to integrated trade-off design of robust fault detection system

Shouchao Zhai, Yiming Wan, Hao Ye

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

In order to improve fault detection (FD) performance, integrated design of residual generation and evaluation is investigated in this paper for trade-offs between fault detection rate and false alarm rate (FAR). A set-membership approach is proposed in residual evaluation by adopting a threshold ellipsoid, which enables more design freedom than a conventional threshold value. With the set-based definitions of fault detection rate and FAR, the integrated design problem is formulated by maximizing the FD performance under a predefined FAR. The joint optimal selection of a residual generator and a threshold ellipsoid is equivalently transformed into a simplified optimization problem of determining an optimal threshold ellipsoid for any given residual generator. A suboptimal solution for the set-membership-based integrated FD system design is obtained based on approximated computation of the FD performance. Monte Carlo simulations show the performance improvement of the proposed method compared with an existing integrated design method.

Original languageEnglish
Pages (from-to)191-209
JournalInternational Journal of Adaptive Control and Signal Processing
Volume31
Issue number2
DOIs
Publication statusPublished - 2017

Keywords

  • fault detection
  • integrated design
  • set-membership
  • threshold set

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