Volume 37 Issue 4
Apr.  2011
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Fang Jiayong, Xiao Mingqing, Wang Xueqi, et al. Multiple fault diagnosis method with unreliable test[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(4): 433-438. (in Chinese)
Citation: Fang Jiayong, Xiao Mingqing, Wang Xueqi, et al. Multiple fault diagnosis method with unreliable test[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(4): 433-438. (in Chinese)

Multiple fault diagnosis method with unreliable test

  • Received Date: 22 Jan 2010
  • Publish Date: 30 Apr 2011
  • Aiming at low diagnosis precision and high false alarm of complex systems diagnosis, a multiple fault diagnosis method was proposed. In order to solve the difficulties of building Bayesian networks’ structure and conditional probabilities table, the system-s multi-signal flow graphs model was built. By introducing unreliability probability into conditional probabilities table, the proposed method-s robustness was enhanced. The problem was concluded as the extreme value problem with inequality constraints by using Bayes maximal posterior probability. The optimized result was obtained by the 0-1 programming implicit enumeration. The electronic equipment of guidance system was explored to illustrate the effectiveness of the proposed method.

     

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