期刊名称：International Journal of Computer Science Issues
印刷版ISSN：1694-0784
电子版ISSN：1694-0814
出版年度：2012
卷号：9
期号：5
出版社：IJCSI Press
摘要：For vibration torque is the key to the rotation system state inspection and fault analysis, a vibration torque test is implemented for no slot rotor three-phase asynchronous when under no load condition. While the vibration torque signal is annihilated by lots of noise, a de-noising scheme based on wavelet transform is constructed. The actual signal is decomposed with wavelet Sym8, then processed by half soft threshold, and reconstructed signal finally. Simulation results indicated that the method can get rid of most of the high frequency noise, recover the factuality and improve the fitting and generalization capability of the data, and de-noising effect is far better than the traditional fast flourier transformation.
