导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2020, Vol. 41 ›› Issue (5): 323632-323632.doi: 10.7527/S1000-6893.2019.23632

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Reliability analysis of aircraft power system based on Bayesian networks and common cause failures

KONG Xiangfen, WANG Jie, ZHANG Zhaomin   

  1. School of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
  • Received:2019-11-04 Revised:2019-12-21 Online:2020-05-15 Published:2020-02-06
  • Supported by:
    National Natural Science Foundation of China(71902180); Aeronautical Science Foundation (20170267002);Civil Aviation Airport Group Smart Operation Key Laboratory Open Fund(KLAGIO20180302)

Abstract: The redundant design in the aircraft power system increases both the reliability of the aircraft system and the probability of common cause failures. To accurately analyze the reliability of the aircraft power system, first, this study adopts the α factor model to decompose the failure rates of the common failure components, and the Bayesian Network (BN) to establish a reliability model of the power system considering the common cause failures. Then, comparative analysis of the reliability of the aircraft power system and its subsystems with and without consideration of common cause failures among redundant components is conducted. The results show a lower reliability of the obtained aircraft power system and its subsystems when the common cause failure factors among redundant components are considered than that without considering these factors, which is more consistent with the actual situation.

Key words: reliability, aircraft power system, common cause failure, Bayesian network, redundant components

CLC Number: