中文摘要：

提出了一种基于振动变形分析的工作状态特征提取方法,利用故障试验台证明了振动变形分析方法的有效性,然后对复杂机械系统的故障诊断方法进行研究。分析结果表明：振动变形分析方法能够全面、准确地将机械系统关键部件的状态特征提取出来,为故障精密诊断奠定基础。

英文摘要：

The vibration deformation analysis-based extraction method for working condition＇s features was proposed; and making use of the fault simulation test rig,the effectiveness of vibration deformation analysis was proved,including the study on the complicated mechanical system＇s fault diagnosis method. The analytical results show that this vibration deformation analysis method can entirely and accurately extract key components＇ vibration feature of the mechanical system and lay the foundation for fault diagnosis.