计算机工程

• 开发研究与工程应用 • 上一篇    下一篇

基于Rollout信息启发式算法的故障诊断策略

刘远宏,刘建敏,冯辅周,江鹏程   

  1. (装甲兵工程学院机械工程系,北京 100072)
  • 收稿日期:2014-07-02 出版日期:2015-08-15 发布日期:2015-08-15
  • 作者简介:刘远宏(1987-),男,博士研究生,主研方向:系统状态监控,故障诊断技术;刘建敏、冯辅周,教授、博士生导师;江鹏程,讲师。

Fault Diagnostic Strategy Based on Rollout Information Heuristic Algorithm

LIU Yuanhong,LIU Jianmin,FENG Fuzhou,JIANG Pengcheng   

  1. (Department of Mechanical Engineering,Academy of Armored Force Engineering,Beijing 100072,China)
  • Received:2014-07-02 Online:2015-08-15 Published:2015-08-15

摘要: 针对传统故障诊断策略构建算法通用性较差的问题,采用Rollout信息启发式算法构建二值和多值测试,用更新后的基于信息启发函数的基准策略进行迭代更新,逐步逼近最优策略。以二值和多值测试为例构建相应的诊断策略。分析结果表明,该策略对二值测试、多值测试和 不确定测试均适用,可以获得优于单步启发式搜索的诊断结果,且时间复杂度不高,适用于优化复杂系统的故障诊断。

关键词: 测试性设计, 诊断策略, Rollout算法, 信息启发函数, 二值测试, 多值测试

Abstract: A construction method of fault diagnostic strategy based on rollout algorithm and information heuristic function is proposed,which is used for constructing binary value and multi-value test diagnostic strategy,aiming at overcoming the shortcomings of the traditional methods,for example,poor universality.The main idea is to obtain a new strategy by rollout algorithm and information heuristic function based benchmark strategy.The new strategy is updated by making new strategy above serve as a benchmark strategy,so as to approach the optimal strategy gradually by iterative computation.The validity of the proposed method is verified by the binary-value and multi-value test optimization cases,and the time complexity is calculated.The results show that the proposed method not only is applicable to binary value,multi-value and uncertain tests,but also has high diagnostic precision and moderate time complexity,which makes it applicable to diagnostic strategy optimization of complex system.

Key words: design of testability, diagnostic strategy, ollout algorithm, nformation heuristic function, inary-value test, ulti-value test

中图分类号: