滚动轴承是各种机电设备中的重要部件，其主要特点是其寿命的随机性较大，且它的好坏直接影响到设备的正常运行。因而掌握轴承运行的工作状态以及故障的形成和发展是目前机械故障诊断领域中研究的重要内容之一。利用轴承的随机振动信号对其工作状态进行诊断是目前最常用的方法-Rolling is a variety of mechanical and electrical equipment is an important component, its main feature is its randomness of life is greater and its direct impact on the normal operation of equipment. Thus grasp the working status of bearing operation and fault formation and development of the field of mechanical fault diagnosis is an important part in the study. The use of random vibration signal bearing its working condition for diagnosis is the most commonly used method