Parameter Optimization VMD and Wavelet Threshold for Vibration Screen Acceleration Signal Denoising
In order to remove the noise associated with the acceleration signal of vibrating screen,a noise reduction method of acceleration signal using Whale Optimization Algorithm(WOA)to optimize the variational mode decomposition(VMD)-wavelet threshold is proposed.The modal decomposition number k and penalty factor α of VMD are optimized by WOA to obtain the optimal parameters.The optimal parameters are brought into VMD,and the noisy effective components are denoised by using wavelet threshold denoising.The actual operation shows that the parameter optimization VMD-wavelet threshold denoising method can effectively eliminate the signal noise.
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