Application of an Improved Discrete Spectrum Correction Method in Motor Fault Diagnosis

摘要

Spectrum analysis is an important method to detect the weak characteristic frequency component of motor fault signal. However, according to the complex frequency components in motor fault signals, discrete spectrum correction technology is needed to reduce the error of amplitude and phase obtained by spectrum analysis. Based on the analysis of the advantages and disadvantages of the existing algorithm, an improved spectrum correction method based on the phase difference method is proposed, and the simulation research is carried out to verify the accuracy of the algorithm. The research results show that the algorithm used in this paper has high accuracy.