中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2014年
11期
1502-1505,1506
,共5页
郭浩亮%穆希辉%杜峰坡%陈建华
郭浩亮%穆希輝%杜峰坡%陳建華
곽호량%목희휘%두봉파%진건화
故障诊断信息量准则%监测点%优化设计%多负荷传感液压系统
故障診斷信息量準則%鑑測點%優化設計%多負荷傳感液壓繫統
고장진단신식량준칙%감측점%우화설계%다부하전감액압계통
fault diagnosis information criterion%monitoring point%optimal design%multi-load-sensing hydraulic system
对特种叉车多负荷传感液压系统的监测点进行分析，建立了多负荷传感系统的测试信号有向图和“元部件监测点”相关性模型。利用信息论中熵的概念，综合评判最大故障诊断信息熵、较短测试时间和较低测试成本以实现故障诊断，建立了最大故障诊断信息量准则，并以此准则对多负荷传感液压系统状态监测点进行优化设计。最后采用分步测试方式画出特种叉车液压系统故障诊断隔离树。
對特種扠車多負荷傳感液壓繫統的鑑測點進行分析，建立瞭多負荷傳感繫統的測試信號有嚮圖和“元部件鑑測點”相關性模型。利用信息論中熵的概唸，綜閤評判最大故障診斷信息熵、較短測試時間和較低測試成本以實現故障診斷，建立瞭最大故障診斷信息量準則，併以此準則對多負荷傳感液壓繫統狀態鑑測點進行優化設計。最後採用分步測試方式畫齣特種扠車液壓繫統故障診斷隔離樹。
대특충차차다부하전감액압계통적감측점진행분석，건립료다부하전감계통적측시신호유향도화“원부건감측점”상관성모형。이용신식론중적적개념，종합평판최대고장진단신식적、교단측시시간화교저측시성본이실현고장진단，건립료최대고장진단신식량준칙，병이차준칙대다부하전감액압계통상태감측점진행우화설계。최후채용분보측시방식화출특충차차액압계통고장진단격리수。
The monitoring points of the forklift multi-load-sensing hydraulic system were analyzed herein,and the test signals digraph and the relational model of “components-monitoring points”were built.Then,maximum fault diagnosis information criterion could be established by means of the con-cept of entropy in information theory,to confirm the optimal fault diagnosis strategy that comprehen-sively evaluated the most fault diagnosis information entropy with smaller cost and test time.Based on this criterion,the monitoring points of the multi-load-sensing hydraulic system were optimized, and the fault diagnosis isolated was drawn tree by step-test method finally.
