系统工程与电子技术

• 可靠性 • 上一篇    

基于冲击理论的性能可靠性评估研究

翟亚利1,张志华1,李大伟2   

  1. 1.海军工程大学理学院, 湖北 武汉 430033; 2.海军工程大学兵器工程系, 湖北 武汉 430033
  • 出版日期:2014-09-25 发布日期:2010-01-03

Performance reliability evaluation based on impact theory

ZHAI Ya-li1, ZHANG Zhi-hua1, LI Da-wei2   

  1. 1. College of Science, Naval University of Engineering, Wuhan 430033, China;
    2. Department of Weapon Engineering, Naval University of Engineering, Wuhan 430033, China
  • Online:2014-09-25 Published:2010-01-03

摘要:

性能退化产品的可靠性通常可以通过性能指标值来反映,而性能指标的退化机理常常可以利用冲击理论进行解释。本文在一定假设下,针对性能退化产品,建立了基于冲击理论的产品性能退化模型,提出了将性能退化模型预测与产品寿命分布拟合相结合的可靠性评估方法,即使用极大似然估计对产品性能退化模型参数进行估计,利用性能退化模型预测拟合产品的寿命分布来评估产品的可靠度。最后,通过实例比较,验证了本方法的可行性和有效性。

Abstract:

The reliability of degradation products is usually reflected by the values of parameters. Always the impact theory can be used to explain the mechanism of the parameters. In a certain hypothesis, the model of capability degradation of degradation products is set up based on the impact theory. Then, the reliability evaluation method which combines the prediction through the model and the life variable distribution of products is presented, that is, using the maximum likelihood estimation to evaluate the parameters and achieve the result reliability assessment. Finally, an example is given to compare different methods. The result demonstrates that the proposed method is feasible and effective.