Journal of Xidian University ›› 2016, Vol. 43 ›› Issue (2): 174-179.doi: 10.3969/j.issn.1001-2400.2016.02.030

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Component-based failure mode and effect analysis for flight control systems

MA Yong1;MA Jianfeng1;SUN Cong1;ZHANG Shuang2;CUI Xining2;LI Yahui2   

  1. (1. School of Computer Science and Technology, Xidian Univ., Xi'an  710071, China;
    2. Aeronautical Computing Technique Research Institute, Xi'an  710068, China)
  • Received:2014-11-17 Online:2016-04-20 Published:2016-05-27
  • Contact: MA Yong E-mail:myemailcom@126.com

Abstract:

The conventional approaches of failure mode and effect analysis (FMEA) have not considered the mutual-influence between failure modes as well as the component-based design of systems. In this paper, we propose a new compositional approach of FMEA. We use fuzzy numbers instead of accurate numbers to describe the risk factors such as occurrence, severity, and detection in FMEA. To improve the accuracy of conventional FMEA, we construct the hierarchical FMEA graph and the respective influence matrix for each component. Then we derive the influence vector for the failure modes and leverage this vector to amend the risk priority numbers of conventional FMEA. The analysis of a practical flight control system shows the usability of our approach. Simulation results show that our compositional approach is more efficient than the non-compositional approach.

Key words: failure mode and effect analysis, component-based design, fuzzy number, graph theory