New Method of Controlling Grinding Accuracy with Dynamic Compensatory

Based on time series analysis, the control technique of grinding accuracy with dynamic compensatory is proposed. In the new technique, the optimal spectrum measurement technique is used as the on-line high precision measurement of the stochastic motion error of the worktable on the guide-way grinder. Then, the mathematics model for the stochastic motion error is given here. The stochastic motion error is predicted by the adaptive predictor, and Kalman filter is used to improve the predicting accuracy. By defining a compensatory curve, real-time compensatory control is adopted to realize high grinding precision on the guide-way grinder. The results from experiments of actual measurement and system simulation show the new technique is effective.