1. The control accuracy is different: the step angle of the two-phase hybrid stepper motor is generally 1.8°, and the step angle of the three-phase hybrid stepper motor is 1.2°. The servo motor controls the angle of rotation by controlling the length of the pulse time.
2. The workflow is different: the stepper motor workflow generally requires two pulses for the stepper motor to work: signal pulse and direction pulse. The servo motor workflow is a power connection switch, and then the servo motor is specially connected.
3. Different low-frequency characteristics: stepper motors are prone to low-frequency vibration at low speeds. The servo motor runs very smoothly and does not vibrate even at low speeds.
4. Different torque-frequency characteristics: the output torque of the stepper motor decreases with the increase of speed, and it will drop sharply at higher speeds.
The servo motor is a constant torque output, that is, within its rated speed, the rated torque is output, and above the rated speed is a constant power output.
5. The overload capacity is different: stepper motors generally do not have overload capacity. The servo motor has a strong overload capacity.