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闂�(gu膩n)閸靛瓧锛�妯＄硦PID鎺у埗鍣�;浜ゆ祦浼烘湇绯荤当(t菕ng);浣嶇疆鎺у埗;MATLAB浠跨湡

Abstract: Variation of the system parameters and external disturbances always happen in the CNC servo system. With a PID controller, it may lead to large overshoot even oscillation, then the steady state and dynamic state performance will be worse. In this paper, a fuzzy-PID controller was proposed,and it incorporated the advantages of PID control and fuzzy control锛寃hich had good performance of adaptation and disturbance rejection. Based on the z-axis position servo system of a high-speed milling machine researched on our institute, simulations were carried out in Matlab with PID controller and fuzzy-PID controller. The results show that the system has stronger robustness and disturbance rejection with the latter, which can meet the performance requirements of the CNC servo system better.

Keywords: Fuzzy-PID controller; AC-servo system; Position control; MATLAB simulation

1 鍓嶈█

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