A DC motor is a rotating motor that converts DC power into mechanical energy or mechanical energy into DC power. The PID (proportional-integral-differential) controller consists of a proportional unit P, an integral unit I and a differential unit D. Through the setting of three parameters Kp, Ki and Kd, it is mainly suitable for systems with basic linearity and dynamic characteristics that do not change with time. As the earliest practical controller, the PID controller has a history of more than 70 years, and its products have been widely used in engineering practice. The PID controller is simple and easy to understand, and does not require precise system models and other prerequisites during use, so it has become the most widely used controller. Aiming at the problem that the parameter setting of the conventional DC motor PID control system is somewhat complex, this article analyzes the structure and principle of the PID control system, and establishes a mathematical model based on the selection of parameters. The DC motor model is simulated and analyzed, and the simulation results of the PID control are compared and analyzed. The simulation results show that the PID control system has good static and dynamic performance and robustness.
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