Research on key technology of contour compensation based on cross coupling of parameter self adjustment

For many CNC two axis linkage problems such as feed load disturbance, mechanical system delay, contour error coordination gain control loop parameter mismatch, etc., through parameter self-adjusting, cross coupling contour compensation can be achieved, and then CNC machining accuracy can be improved. The cross coupling contour compensation method of CNC machine tool parameter self-adjusting cross coupling is adopted to adjust the cross coupling variable gain control, and the cross coupling increment of variable gain is designed to suppress the curve multi axis cross coupling contour control. The simulation is carried out with MATLAB. The simulation results show that the cross coupling contour compensation with self-adjusting CNC machine parameters can eliminate the cross coupling contour as much as possible and improve the self-adjusting cross coupling contour compensation significantly. This method can effectively improve the contour accuracy and meet the high-speed and high-precision interpolation error compensation.