A Stepper Motor Automatic Speed Control Method Based on Second Order Sliding Mode Algorithm
Affected by the linkage relationship of each part,the control effect of the speed up and down adjustment of the stepper motor is difficult to meet the actual demand.Therefore,an automatic speed control method for stepper motors based on second-order sliding mode algorithm is proposed.Based on the comprehensive motion equation of the stepper motor rotor,electromagnetic torque equation,motor rotation equation,and damping coefficient equation,a mathematical model of the stepper motor is constructed.It was clarified that by adjusting the input current,the speed of the stepper motor was controlled to achieve the desired speed control goal.In the specific control stage,a second-order sliding mode controller is introduced,and the sliding mode surface function and sliding mode control law are iteratively iterated based on the gain coefficient until the control requirements are met.In the test results,the design control method not only achieves the goal of quickly adjusting the test stepper motor speed in a short period of time,but also exhibits high stability in speed,meeting practical application requirements.
stepper motorautomatic lifting and loweringspeed controlsecond order sliding mode controller
NETL
NSTL
万方数据
