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. For the second order simplified model of servo system, the traditional PID control method is used to design the feedback controller of the servo system, and the PID control parameters are adjusted to make the output stable and smooth without chatter. On this basis, an improved nonlinear PID control method is introduced, which makes the response speed of the servo system faster and the output not overshoot or flutter, in line with the needs of engineering applications.

An Improved Nonlinear PID Control Method for a Class of Servo