Study on Noise Elimination Method of Pump Vibration Signal in Pumping Station with Dustpan Channel
To cope with the complexity of vibration sources,large quantity of noise content and difficulty in obtaining the effective data of pump signal,a vibration signal denoising method based on improved translation invariant Langmuir wavelet threshold is studied.The pump vibration signal is divided into high frequency region and low frequency region,the corresponding appropriate wavelet range is selected,and the noisy signal is transformed orthogonally under the effect of wavelet decomposition levels.The simulation results show that the method,with the help of translation invariants,can remedy the discontinuous defect points of the signal,recover the original vibration signal from the noise,and abtain small waveform distortion,high signal signal-to-noise ratio,good robustness and fully preserved contour and characteristics of the signal,which provides a new idea for analyzing the internal flow pattern of dustpan type inlet passage and ensures the overall working reliability of pump.
vibration signal denoisingpump vibrationwavelet coefficientorthogonal transformtranslation invariant
万方数据
维普
