摘要
针对冗余系统的多故障诊断问题,分析了冗余多故障系统的相关性矩阵模型,通过对模型进行转换后,用Rollout算法对基于信息熵的诊断策略进行优化,提出了一种新的多故障诊断策略;该策略不需要计算最小碰集,而且具有先测试,最后修复的特点,在具体应用中更便于操作;实例计算结果表明,和现有算法相比,本策略得到的期望测试费用更低。
The problem of multiple fault diagnosis strategy for redundant system is considered.The fault-test relation matrix model is analyzed first.Based on the exchange of the relation matrix model,Rollout algorithm is used to improve the information entropy based diagnosis strategy.Then,a new diagnosis strategy for multiple fault redundant system is proposed.This method doesn＇t need Computing minimal compact set,and has the characteristic that test first and repair last.It＇s more useful for practical projects.The example demonstrates that the strategy can get lower expect cost than the existing method.
出处
《计算机测量与控制》
北大核心
2014年第11期3480-3482,3486,共4页
Computer Measurement &Control
关键词
多故障诊断
冗余系统
可测性设计
ROLLOUT算法
诊断策略
multiple fault diagnosis
redundant system
design for testability
Rollout algorithm
diagnostic strategy
