Patent ID: 8768634
Filing Date: 2014-07-01
Classification: G01H

Abstract:
1. A diagnosis method of defects in a motor, comprising: generating a vibration signal corresponding to a vibration of a motor by a vibration sensing module during operation of the motor; generating a sound signal corresponding to a sound of the operation of the motor by a sound sensing module during the operation of the motor; performing a data pre-processing procedure to pre-process the vibration signal, so as to eliminate noises of the vibration signal; performing an analyzing procedure by a processor to analyze a spectrum of the vibration signal pre-processed after the data pre-processing procedure, so as to retrieve a fundamental frequency in the spectrum of the vibration signal, wherein the spectrum of the vibration signal includes a speed spectrum and an acceleration spectrum, and the analyzing procedure comprising: retrieving spectrum features in the spectrum of the vibration signal according to the fundamental frequency; and performing a comparison procedure with a defect spectrum feature database according to the retrieved spectrum features, so as to determine a defect type of the motor.