系统工程与电子技术
繫統工程與電子技術
계통공정여전자기술
SYSTEMS ENGINEERING AND ELECTRONICS
2015年
2期
360-364
,共5页
分层系统%测试性设计%诊断策略%Rollout 算法
分層繫統%測試性設計%診斷策略%Rollout 算法
분층계통%측시성설계%진단책략%Rollout 산법
hierarchical system%design for testability%diagnostic strategy%Rollout algorithm
根据复杂系统一般由多个分系统组成,其结构往往具有层次性的特点,研究了分层系统的测试模型,在对模型进行分层处理的基础上,采用 Rollout 算法对分层系统中各个子系统的相关性矩阵模型进行计算,并按照得出测试序列和层次结构建立故障诊断树,从而建立了一种分层系统诊断策略。实例分析表明,基于分层考虑的诊断策略可以按照测试需求,方便地将故障隔离到各个层次,而且通过对系统进行分层处理,可降低系统的计算复杂度,缩短计算时间。
根據複雜繫統一般由多箇分繫統組成,其結構往往具有層次性的特點,研究瞭分層繫統的測試模型,在對模型進行分層處理的基礎上,採用 Rollout 算法對分層繫統中各箇子繫統的相關性矩陣模型進行計算,併按照得齣測試序列和層次結構建立故障診斷樹,從而建立瞭一種分層繫統診斷策略。實例分析錶明,基于分層攷慮的診斷策略可以按照測試需求,方便地將故障隔離到各箇層次,而且通過對繫統進行分層處理,可降低繫統的計算複雜度,縮短計算時間。
근거복잡계통일반유다개분계통조성,기결구왕왕구유층차성적특점,연구료분층계통적측시모형,재대모형진행분층처리적기출상,채용 Rollout 산법대분층계통중각개자계통적상관성구진모형진행계산,병안조득출측시서렬화층차결구건립고장진단수,종이건립료일충분층계통진단책략。실례분석표명,기우분층고필적진단책략가이안조측시수구,방편지장고장격리도각개층차,이차통과대계통진행분층처리,가강저계통적계산복잡도,축단계산시간。
The complex system always contains several subsystems,and sometimes its structure is hierar-chical.According to this situation,the test model of hierarchical systems is researched.Based on the exchange of the model,the Rollout algorithm is used to calculate the fault-test relation matrix model of each subsystem, and the diagnostic trees are set up according to the test sequence and the hierarchical structure.Then a new di-agnosis strategy for the hierarchical system is proposed.The example demonstrates that the fault can be isolated to any floor if needed based on the strategy for the hierarchical system.Also this strategy can minimize the size of the fault-test relation matrix model and reduce calculation time.