Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (11): 3399-3404.doi: 10.12305/j.issn.1001-506X.2021.11.41

• Reliability • Previous Articles     Next Articles

Research on synthetic reliability assessment method for high-value ammunition

Leilei ZHANG1,*, Long XIE1, Xu GAO1, Tianyu SUN1, Feng ZHANG2   

  1. 1. Xi'an Institute of Control Technology, Xi'an 710065, China
    2. School of Methanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an 710129, China
  • Received:2020-12-29 Online:2021-11-01 Published:2021-11-12
  • Contact: Leilei ZHANG

Abstract:

To solve the problem of large sample and high cost of high-value ammunition on reliability qualification test, the synthetic reliability assessment was proposed based on small-sample dynamic population thought. For the reliability of ammunition, considering the dynamic characteristic present on research stage, the differential characteristic present on environment and relevance characteristic on similar equipment, the synthetic reliability assessment of ammunition was established based on small-sample dynamic population thought; Regarding the different maternal body problem, the uncertainty of reliability with historical sample and without historical sample was quantified by using the information entropy and conditional entropy theory, and the inheritance factor of historical sample to current sample was expressed with uncertainty-reducing ratio. The mixed prior probability distribution of reliability was constructed based on beta distribution function and inheritance factor, and the posterior probability distribution was derived by Bayesian theory, finally achieving the efficient reliability assessment for high-value ammunition. The validity and rationality of above method was tested and verified through taking certain ammunition as application object.

Key words: high-value ammunition, synthetic reliability assessment, small-sample dynamic population statistics, bayesian theory, information entropy

CLC Number: 

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