This paper explains the theory and algorithm of the HHT. It employs the plenty of information of gear embodied in Hilbert spectrum for fault diagnosis.
介绍了希尔伯特黄变换算法的原理及流程，利用由希尔伯特谱反映出的丰富的物理信息来对齿轮进行故障诊断。
In this paper, the theory and algorithm of the HHT is explained in detail.
详细地介绍了HHT方法的理论和算法。
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