计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2013年
14期
66-69
,共4页
丁元明%何涛%宣恒农
丁元明%何濤%宣恆農
정원명%하도%선항농
系统级故障诊断%PMC故障模型%自适应诊断算法%新的自适应顺序诊断(NASD)算法
繫統級故障診斷%PMC故障模型%自適應診斷算法%新的自適應順序診斷(NASD)算法
계통급고장진단%PMC고장모형%자괄응진단산법%신적자괄응순서진단(NASD)산법
system-level fault diagnosis%PMC fault model%adaptive diagnosis algorithm%New Adaptive Sequential Diagnosis (NASD)algorithm
在PMC故障模型下，现有的自适应顺序诊断算法（ASD算法）不能充分利用所有的测试结果。为了有效地减少测试次数，提高诊断效率，提出一种新的自适应顺序诊断算法（NASD算法）。引入相对故障单元的概念，给出并证明了故障单元和无故障单元的判别定理。据此给出系统诊断的策略：（1）边寻求无故障单元边确诊故障单元；（2）已确认的故障单元不再参与任何测试；（3）找到无故障单元或故障单元数接近一半时，系统诊断结束。实例表明，NASD算法优于其他ASD算法。
在PMC故障模型下，現有的自適應順序診斷算法（ASD算法）不能充分利用所有的測試結果。為瞭有效地減少測試次數，提高診斷效率，提齣一種新的自適應順序診斷算法（NASD算法）。引入相對故障單元的概唸，給齣併證明瞭故障單元和無故障單元的判彆定理。據此給齣繫統診斷的策略：（1）邊尋求無故障單元邊確診故障單元；（2）已確認的故障單元不再參與任何測試；（3）找到無故障單元或故障單元數接近一半時，繫統診斷結束。實例錶明，NASD算法優于其他ASD算法。
재PMC고장모형하，현유적자괄응순서진단산법（ASD산법）불능충분이용소유적측시결과。위료유효지감소측시차수，제고진단효솔，제출일충신적자괄응순서진단산법（NASD산법）。인입상대고장단원적개념，급출병증명료고장단원화무고장단원적판별정리。거차급출계통진단적책략：（1）변심구무고장단원변학진고장단원；（2）이학인적고장단원불재삼여임하측시；（3）조도무고장단원혹고장단원수접근일반시，계통진단결속。실례표명，NASD산법우우기타ASD산법。
The existing Adaptive Sequential Diagnostic algorithm(ASD algorithm)based on PMC fault model can not take full advantage of all of the test results. In order to reduce the number of tests and improve diagnostic efficiency, a New Adaptive Sequential Diagnosis algorithm(NASD algorithm)is presented. The concept of relative fault unit is introduced and the diagnostic theorem of fault processor and non-fault processor is put forward and proved . Thus, system diagnosis strategies are as follows:(1)Fault processors are found while non-fault processor is sought.(2)The processors which have been confirmed as faulty will not be used in any tests.(3)Once an non-fault processor is found or the number of fault processors is close to half of the total, the system diagnosis is stopped. Example shows that NASD algorithm is better than other ASD algorithms.
