Systems Engineering and Electronics ›› 2023, Vol. 45 ›› Issue (7): 2280-2286.doi: 10.12305/j.issn.1001-506X.2023.07.39

• Reliability • Previous Articles     Next Articles

Reliability modeling of phased mission system considering shocks and phase backups

Xiangyu LI1, Hongzhong HUANG2,*, Xiaoyan XIONG1   

  1. 1. School of Mechanical and Transportation Engineering, Taiyuan University of Technology, Taiyuan 030024, China
    2. School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
  • Received:2022-11-22 Online:2023-06-30 Published:2023-07-11
  • Contact: Hongzhong HUANG

Abstract:

In recent years, due to its widespread application in fields such as aerospace, military, and nuclear energy, the reliability modeling method of phased mission system (PMS) has received widespread attention.The electronic equipment contained in the aerospace system may fail due to its own aging, leading to performance degradation, and may also fail due to random shocks, seriously affecting system reliability. A model based on modular methods is proposed to address this issue. Firstly, the impact model is combined with the semi-Markov process(SMP) to calculate the reliability of the work unit affected by the impact. Then, a method based on binary decision diagram (BDD) model is proposed to model the reliability of PMS that considers both impact and phase backup. Finally, taking the propulsion subsystem of a certain type of spacecraft as an example, the proposed method is explained and validated using the Monte Carlo method, demonstrating the modeling efficiency and accuracy of the proposed method.

Key words: phased mission system (PMS), reliability modeling, random shock, phase backup, semi-Markov process (SMP)

CLC Number: 

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