13. What is the difference between the performance of a servo motor and a stepper motor?
A:
(1) The control accuracy is different (the control accuracy of the servo motor is guaranteed by the rotary encoder at the back end of the motor shaft, and the control accuracy of the servo motor is higher than that of the stepper motor).
(2) The low-frequency characteristics are different (the servo motor runs very smoothly, and there is no vibration even at low speed. Generally, the low-frequency performance of the servo motor is better than that of the stepper motor).
(3) The overload capacity is different (stepper motor does not have overload capacity, servo motor has strong overload capacity).
(4) The operating performance is different (the control of the stepper motor is open-loop control, and the AC servo drive system is closed-loop control).
(5) The speed response performance is different (the acceleration performance of the AC servo system is better).
