【液压系统状态监测及故障诊断的研究】马力.pdf

ADissertationSubmittedto AcademicDegreesEvaluationCommitteeof Huazhong University of Science and Technology for the Degree of Doctor of Philosophy in Engineering Study on State Monitoring and Fault Diagnosis ofHydraulicSystem Ph.D.Candidate:MaLi Major:MechanicalEngineering Supervisor:Prof.

华中理工大学博士学位论文效率的修正算法.然后,在对失效根源进行了充分分析的基础上,得出了描述根源性工况的特征参数组以及液压系统中观察点的合理选取方法,最后提出了根源性工况监测策略。同时,本文针对液压系统性能失效的监测问题,对液压系统性能失效状态监测特征参数的选取原则进行了分析,在此基础上,通过对多状态参数的多级模糊综合评判,得出了液压系统中各功能工况发生故障可能性大小的计算方法,该方法使得工况评判更加符合实际情况,从而提出液压系统功能失效的状态监测策略。

华中理工大学博士学位论文 monitoring andfault diagnosticof hydraulic system,a comprehensive evaluation methodbasedongreyrelationalanalysistheorytoaccesstheperformanceofhydraulic fluidisfirstlyintroduced,whichhelpstoobtaintheoverallperformanceevaluation of hydraulicfluidfromlimitedmeasuringdataofthesystem.