The Method for High-Precision Servo Control of the Rotational Speed Driven by a Stepper Motor
[Purposes]In order to solve the problem of unstable accuracy of stepper motor at high speed and load change,a high-precision servo control method for stepper motor drive speed is proposed.[Meth-ods]The mathematical model of the stepper motor is built,the servo controller of the motor driving speed is designed,and the target speed of the motor is obtained.By associating parameters,the control chal-lenge is reconstructed into the target optimization problem under multi-variable and time-dependent constraints,and the high precision servo control of stepper motor drive speed is realized.[Findings]The experimental results show that the speed control error of the high-precision servo control method of the stepper motor is less than that of the other two methods,and both are controlled within 20 r/min,thereby improving the speed stability and control accuracy of the stepper motor and meeting the needs of high-precision applications.[Conclusions]The high precision servo control method of stepper motor proposed in this study has high feasibility in practical application,and provides a strong support for the application of stepper motor in the field of precision control.
automation equipmentmotor drive speedspeed controlservo controlstepper motor
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