How to choose the labeling machine, the difference between stepper motor and servo motor
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In terms of performance, the two summarize six major differences.
1, speed response performance: the general stepper motor start requires 200-400 milliseconds, and the servo motor only takes a few milliseconds.
2. Control accuracy: The servo motor has higher control precision than the stepper motor.
3. What happens when the low frequency occurs: The stepping motor is prone to low frequency vibration at low speed, but the servo motor will not.
4. Moment frequency characteristics: The output torque of the stepping motor decreases as the speed increases, and it drops sharply at higher speeds. Its zui high speed is between 300RPM and 600RPM. The servo motor is a constant torque output.
5. Overload capability: Stepper motors generally do not have overload capability, while servo motors have strong overload capability.
6. Operational performance: The control of the stepping motor is open-loop control. If the starting frequency is too high or the load is too large, the situation may be disordered, so it is necessary to deal with the problem of speed increase and speed reduction. The servo motor is closed-loop control, and the driver directly samples the motor encoder, so the control performance is more reliable.