作者：陈圣俭1, 王栋1,2, 丁岩松1
作者单位：1. 装甲兵工程学院控制工程系, 北京 100072;
2. 中国航天员科研训练中心, 北京 100094
关键词：信息流模型; 测试性设计; 故障隔离; 非多余测试; 划分
摘要：
为了实现快速地故障隔离,提出了一种基于信息流模型和测试划分的故障隔离方法。首先计算出非多余测试,在信息流模型中,具有相同激励的测试可以同时被执行,并按此对测试进行分组。在故障隔离过程中,按各组能检测出的故障出现概率的大小来决定测试顺序。实验表明,该方法最大程度地减小了测试时间,同时兼顾考虑了故障出现的概率和最少测试硬件增加。
Fault isolation method based on information flow model
CHEN Sheng-jian1, WANG dong1,2, DING Yan-song1
1. Department of Control Engineering, Armored forces Engineering University, Beijing 100072, China;
2. Center of Astronaut Scientific Research and Training of China, Beijing 100094, China
Abstract: An algorithm based on information flow model and test partition was proposed to achieve fast fault isolation strategy. Firstly, non-excess tests should be computed. In the information flow model, different tests could be grouped according to their stimulant, because tests with the same stimulant could be carried out at the same time. The sequence of tests could be decided by the probability of fault conclusion detected by these test groups in the course of fault isolation. Experimental results indicated that with this algorithm, test time could be decreased as much as possible. At the same time, the fault probability and the minimal test hardware had been taken into consideration.
Keywords: Information flow model; Testability design; Fault isolation; Non-excess test; Partition
2008, 34(4): 52-54 收稿日期: 2007-11-27;收到修改稿日期: 2008-2-9
基金项目:
作者简介: 陈圣俭(1967-),男,山东济宁人,教授,博士后,主要研究方向为智能BIT、故障诊断。
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