吉林大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (04): 1025-1028.

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Vibration signal processing of motor spindle based on wavelet singularity

GAO Rong1,2,YE Pei-qing1,JIANG Ke-rong3,LI Wen4   

  1. 1.Department of Precision Instruments and Mechanology,Tsinghua University,Beijing 100084,China;2.Faculty of Mechanical Engineering, Huaiyin Institute of Technology,Huaian 223003,China;3.Institue of Intelligent Machines,Chinese Academy of Sciences, Hefei 230031,China|4.Department of Electromechanical Engineering,Weihai Vocational College, Weihai 264200,China
  • Received:2008-10-27 Online:2010-07-01 Published:2010-07-01

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Abstract:

To apply the theory of wavelet singularity in the vibration signal processing of the high-speed motor spindle, the reconstruction method of the wavelet singularity signal was analyzed, and an algorithm to detect the vibration signal singularity of the motor spindle was proposed. A testing and signal processing system was built for the motor spindle. According to the different characteristics of the signals and noises at every scale space after the wavelet transform, the signal reconstruction by the inverse wavelet transform extracted the vibration signal characteristics of the motor spindle. Simulation results show that the proposed signal processing method can remove the effect of the noise on the machining process monitoring system, predict the mechanical failure signal, and extend the lifespan of the motor spindle.

Key words: mechanics, signal processing, motor spindle, wavelet transform, singularity, vibration

CLC Number: 

  • TH113.1
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