汽车起重机液压系统的失效状态与故障诊断

Failure analysis and fault diagnosis system for hydraulic system of truck crane

依据液压系统失效模式的层次结构 ,分析了汽车起重机液压系统的失效机理与故障特点 ,在此基础上研制了液压系统状态监测的计算机软件系统。应用专家系统的有关概念和面向对象的设计原理 ,用VisualBaisc开发了液压系统故障诊断软件。该系统的应用能大大提高液压系统故障诊断的效率和准确率。

logic level structure of truck crane hydraulic system's failure modes is presented,and the failure mechanism and fault characteristics are discussed.The hydraulic system state monitoring and fault diagnosis software is developed with Visual Basic,based on expert system and object-oriented design theories.Using this system,efficiency and accruacy of hydraulic system fault disgnosis can be increased significantly.