Profile Error Compensation for Cam Grinding Based on Data Driven
Aiming at the problems of periodic and repetitive profile errors and difficult modeling in CNC cam grinding machine,a data driven profile error compensation strategy was proposed.In the single axis servo tracking system of CNC cam grinding machine,a model-free adaptive iterative learning control was added,and the pseudo partial derivative was introduced along the iterative axis to dy-namically linearize the complex nonlinear system.In view of the different hysteresis caused by the different servo tracking errors between the two axes,cross coupled iterative learning control was used to feedback the compensation amount to the single axis servo control sys-tem according to the cross coupling coefficient to realize the compensation of the cam grinding profile error.According to the simulation experiment results,the proposed profile error compensation strategy can effectively reduce the profile error of the cam and improve the machining accuracy of the CNC cam grinding machine.
profile errordata drivencross couplingmodel free adaptive iterative learning control
万方数据
维普
