The surface quality control of curve grinding process based on wavelet neural network

摘要

Wavelet neural network was used in the area of curve grinding. The prediction model of surface machining quality in curve grinding based on wavelet neural network was founded. The work piece feed amount, rotation speed of grinding wheel and vibration frequencies were chosen as input variables of wavelet neural network. The roughness was used to assess grinding surface quality. Prediction results were feedback to adjust machining parameters. In order to solve disadvantages of "dimension disaster", slow rate of convergence and easily falling into local minimum point caused by multi-input and output. A new local evolutionary algorithm was used to train wavelet neural network. From some experiments, it can be seen that this method increase rate of convergence effectively. The surface quality of curve grinding process can be obtained.