摘要
对于复杂系统,在实际测试中测试不通过的情况可能有多种,如果依然采用基于确定性关联矩阵的测试序列生成算法,将损失大量信息,导致测试精度和效率降低.提出了基于关联矩阵扩展的诊断策略设计方法,将多值关联矩阵扩展为二值关联矩阵,然后利用AO*算法得出诊断策略.实例验证表明,算法提高了故障隔离精度,为不确定系统的诊断策略设计提供一种高效算法.
In practical test,the output may be various when it fails.A great deal of information would be ignored if binary test was applied.Test precision and efficiency would also be decreased.Diagnosis strategy design algorithm based on extended multivalued dependency matrix was put forward.Multivalued dependency matrix was extended into binary dependency matrix,and then diagnosis strategy was designed based on AO＊ algorithm.Finally,the example proves that fault isolation precision is improved and the algorithm is effective.It offers an efficient algorithm to the diagnosis strategy design of uncertain system.
出处
《工程设计学报》
CSCD
北大核心
2010年第5期388-391,共4页
Chinese Journal of Engineering Design
基金
国家部委"十一五"预先研究项目(51319040405)
关键词
测试性分析
诊断策略
关联矩阵
多值测试
testability analysis
diagnosis strategy
dependency matrix
multivalued test
