The weak feature of incipient fault can be extracted by the change of difference resonator's phase diagram.If the original signal contains the frequency to be detected,the phase diagram of difference resonator will converge to a ring.Contrarily,the phase diagram of difference resonator will converges to a point.The influence of parameters on the difference resonator phase diagram was discussed,and the setting method of parameters was proposed in this paper.Vibration signals were collected on rolling bearing...
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