Systems Engineering and Electronics ›› 2023, Vol. 45 ›› Issue (4): 1239-1246.doi: 10.12305/j.issn.1001-506X.2023.04.34

• Reliability • Previous Articles    

Equipment failure probability prediction model based on Dirichlet distribution

Tiejun JIANG1, Junke WANG1,2,*   

  1. 1. Department of Management Engineering and Equipment Economics, Naval University of Engineering, Wuhan 430033, China
    2. Unit 92198 of the PLA, Xingcheng 125100, China
  • Received:2022-07-11 Online:2023-03-29 Published:2023-03-28
  • Contact: Junke WANG

Abstract:

The prediction of equipment failure probability is the key to solve the problem of spare parts inventory decision. When it is difficult to determine the type of equipment fault distribution under the framework of parameter model, the non-parametric Bayesian method based on Dirichlet distribution is used to model the equipment failure probability, and Monte Carlo method is used to simulate. Since no parametric model of fault distribution is assumed, this method has strong flexibility. After random sampling of sample data, simulation and comparative analysis show that the fluctuation of prediction results is very small, which shows that the method has strong robustness.The model based on Dirichlet distribution can solve the problem of predicting equipment failure probability when the fault distribution type is difficult to determine under the framework of parameter model.

Key words: spare parts, Dirichlet distribution, Monte Carlo method, probability prediction

CLC Number: 

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