Abstract:

To improve the precision of cam grinding machining, reduce the cam contour error, and improve the robustness of the system, a new error compensation method is adopted. It is named profiling tracking error compensation, in which the actual profiling tracking error compensate the series values of X axis. The two axes linkage feedback system is established by using Matlab, and the fuzzy PID(Proportional-Integral-Derivative) controller is designed to realize online compensation for the system. The cam used in the simulation experiment is difficult to process so as to verify compensation effects and the performance of the controller. The simulation experimental results show that this method can effectively reduce the cam contour error, simplify the calculation process, and improve the response speed of the system. Compared with the traditional PID controller, it has better robustness.

Key words: profiling tracking error compensation, cam grinding, fuzzy-proportional-integral-derivative(PID), robustness