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Volume 42 Issue 7
Jul.  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(7): 1449-1460.
SUN Weichao, XU Aiqiang, LI Wenhaiet al. Diagnosis method of simultaneous fault with incomplete information[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(7): 1449-1460. doi: 10.13700/j.bh.1001-5965.2015.0433(in Chinese)
Citation: SUN Weichao, XU Aiqiang, LI Wenhaiet al. Diagnosis method of simultaneous fault with incomplete information[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(7): 1449-1460. doi: 10.13700/j.bh.1001-5965.2015.0433(in Chinese)
shu

Diagnosis method of simultaneous fault with incomplete information

doi: 10.13700/j.bh.1001-5965.2015.0433
  • 1.

    Graduate Management Brigade, Naval Aeronautical Engineering Institute, Yantai 264001, China

  • 2. Department of Scientific Research, Naval Aeronautical Engineering Institute, Yantai 264001, China

  • Received Date: 30 Jun 2015
  • Publish Date: 20 Jul 2016
    Abstract
  • Test information is often incomplete in the fault diagnosis process of equipment. And simultaneous fault diagnosis process is more difficult at the same time. In response to this situation, the current methods of fault diagnosis with incomplete test information and of simultaneous fault diagnosis are studied firstly. Then we define incomplete fault diagnosis decision system to describe incomplete test information. And it defines incomplete boundary rough entropy to measure the level of uncertainty in the system and assign the importance of each attribute. Meanwhile, the method to calculate frequency of attributes' value under incomplete condition is proposed. In order to diagnose simultaneous fault, the paper constructs the diagnosis model under DSmT framework,and proposes a new combination rule of interval-value belief to overcome the shortcomings of previous methods. Finally, the validity and applicability of the method are proved by two equipment fault diagnosis examples.

     

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