一、前言随着科学技术的进步,生产的发展,机械设备日趋复杂。为保证设备正常运行,充分发挥效益,各种设备的可靠性、安全性是至关重要的。然而,现役生产设备大都是在没有充分的故障先验知识的情况下设计制造出来的,存在可靠性、安全性差的问题。因此,发展设备故障诊断技术,进行在线工况监视,有着潜在的具大经济效益和社会效 I. Preface With the progress of science and technology and the development of production, the mechanical equipment has become increasingly complicated. To ensure the normal operation of equipment, give full play to benefits, a variety of equipment reliability, safety is crucial. However, most of the active production equipment is designed and manufactured without sufficient prior knowledge of faults, which has the problems of poor reliability and safety. Therefore, the development of equipment fault diagnosis technology, online monitoring of conditions, with the potential of great economic and social benefits