Abstract

In this paper, based on the application of the fuzzy self-tuning PID controller in the Siemens S7-300 PLC, we design the hardware and software of dc motor speed control system, and studies the promotion contributed by the fuzzy PID controller. Combined with the MATLAB simulation and processing test, we concluded that fuzzy self-tuning PID controller not only remains the good quality of the steady high precision, but also improve quickness and robustness of dc speed regulating system.

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