Stability Design of Cutting Current Based on Fuzzy Control Theory

Abstract

Current signal can reflect the cutting state of the machine tools effectively. Two-dimensional fuzzy control strategy is introduced to realize the cutting current changing smoothly. With the current value used as the system input, segmented membership functions are constructed to satisfy the sensitivity and stability requirements. To verify the control system, an experiment is completed with the application of Matlab-simulink. The experimental results show that the fuzzy control strategy can not only effectively reduce the fluctuation degree of current but also highly improve the stability of the NC machining system.