China Stepper motor manufacturer has a professional team for r&d and manufacturing. Stepper motor has several control strategies. The following is a brief summary of one part:
As a simple and practical control method, PID control has been widely used in stepper motor drive.It forms the control deviation e(t) according to the given value R (t) and the actual output value C (t), and forms the control quantity by linear combination of the proportion, integral and differential of the deviation to control the controlled object.Based on the position detector and vector control, a PI speed controller which can be automatically adjusted is designed in the literature to be used in two-phase hybrid stepper motor. This controller can provide satisfactory transient characteristics under the condition of variable working conditions.According to the mathematical model of stepping motor, the PID control system of stepping motor is designed in the literature. The PID control algorithm is used to get the control quantity, so as to control the motor to the specified position.Finally, the simulation results show that the control has a good dynamic response.PID controller has the advantages of simple structure, strong robustness and high reliability, but it can not effectively deal with the uncertain information in the system.
At present, PID control is more combined with other control strategies to form a new compound control with intelligence.This intelligent compound control has the ability of self-learning, self-adaptation and self-organization. It can automatically identify the parameters of the controlled process and automatically adjust the control parameters to adapt to the changes of the parameters of the controlled process. Meanwhile, it has the characteristics of conventional PID controller.
