The Separation Approach for the Surface Geometry Error Based on Wavelet Transform

According to the characteristics of rotary parts's actual surface composite by multiplefrequency component.in order to accurately extract the various types of error signal,in the analysis of the traditional digital filter algorithm and wavelet transform A filtering approach based on wavelet transform for the surface geometry error is proposed;through the experimental analysis of the steps of wavelet filter decomposition,and extracte integratedly the surface form error,surface waviness and surface roughness,to meet the rotational parts of the measurement requirements.