The high-speed torque is larger than the open-loop step, and it is commonly used in 0-1500rpm occasions. Summary: The closed-loop stepping motor has the characteristics of low cost, high efficiency, no jitter, no stop micro-vibration, high rigidity, no tuning, high speed, high dynamic response, etc. It is a cost-effective alternative to high-cost servo systems and low-end open-loop stepping systems. The highest solution. Servo motor (servo motor) is also called executive motor, which can control the speed and position accuracy very accurately, and can convert the voltage signal into torque and speed to drive the control object. Different from the principle structure of the stepper motor, the servo motor puts the control circuit outside the motor, and the motor part inside is a standard DC motor or an AC induction motor.