Paper Title:
Discussion on the Wavelet Adjustment Factor Threshold Noise Reduction Technology Based on DSP
  Abstract

Because of discontinuity at threshold, hard threshold de-noising leads to the additional oscillation at threshold when reconstructing the signal, so that the smoothness of the de-noised signal becomes weak; Soft threshold de-noising method can guarantee the good continuity of the signal. However, for the existence of the fixed bias between the estimated threshold and actual threshold, there are also deviations between the reconstructed signal and the actual signal existing deviations too. In this work, by using the high performance DSP as a signal processing tool, we reduced the noise of actual measured vibration signal collected from headstock of CA6140 lathe. By comparing, the result is the same as the noise reduction simulation calculated from MATLAB, which demonstrates the noise reduction effect of wavelet adjustment factor threshold de-noising apparently.

  Info
Periodical
Advanced Materials Research (Volumes 317-319)
Chapter
Measure Control Technologies and Intelligent Systems
Edited by
Xin Chen
Pages
1201-1204
DOI
10.4028/www.scientific.net/AMR.317-319.1201
Citation
Z. R. Liu, T. He, Y. Y. He, Y. X. Yu, "Discussion on the Wavelet Adjustment Factor Threshold Noise Reduction Technology Based on DSP", Advanced Materials Research, Vols. 317-319, pp. 1201-1204, 2011
Online since
August 2011
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