【摘要】 利用希尔伯特变换技术，将含故障的轴承振动信号转化为窄带振动包络信号．然后用包络信号的功率谱和沃尔什列谱对轴承故障进行诊断．对５套３０７轴承的诊断结果表明，这种方法诊断结果准确可靠，方法简便实用，速度快，特别适用于滚动轴承故障的在线监测与诊断更多还原

【Abstract】 In this paper, based on the Hilbert transform method, faults of bearings are diagnosed using the power spectrum and Walsh spectrum of narrow band vibration envelope signals transformed from vibration signals of faulty bearings. The diagnostic results show this method is reliable, accurate, fast and simple, especially suitable for the on line detection and diagnosis of the rolling bearing.更多还原