The rapid development of wind power generator, the service life and efficiency but various fault often will not only shorten the wind generator, also brought the loss of life and property to the people. For fault diagnosis is an effective method of fault diagnosis using the motor vibration signals, This paper adopts the HHT analysis method, the vibration signal of the wind machine for processing fault characteristics are obtained, and the fault diagnosis,improve the efficiency of fault diagnosis, the conclusion shows that it is an effective method of fault diagnosis for fan, troubleshooting and repair of fans have important practical significance.
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