Application of Wavelet Threshold Denoising to Crane Trolley Track Vibration Signal processing
Li Yong · Journal of Shanghai Institute of Technology · 2009
Wavelet denoising is used to solve the problem that vibration signal is easy to be interfered when measured.The wavelet has a good property of local analysis in both time domain and frequency domain.It's fit for analyzing nonstationary signals such as vibration noise signal.The simulated signal and vibration signal of on-spot trolley track joints were denoised separately by wavelet threshold denoising.The experiments showed that wavelet threshold denoising which builds the foundation of the further analysis of vibration signal,could be more effective to eliminate noise and to increase the Signal-to-Noise Ratio(SNR) of signal and to decrease the Mean-Square-Error(MSE).