With pulse control, what is the difference between stepping motor and servo motor?

Step: as the name suggests is step by step forward, receive a pulse, rotate an Angle.

Servo: Servo means a slave in Latin, meaning that it is very obedient.

Both servo motor and stepper motor are common motor types, which have their own characteristics in control and application. The following are the main differences:

1. control method:

1, servo motor: usually using closed-loop control, through the encoder (such as photoelectric encoder) to provide feedback signal, accurately control the position, speed and acceleration of the motor.

2, stepper motor: generally using open ring control, no feedback system, through the pulse signal to control the step rotation of the motor.

2. Precision and stability:

1. Servo motor: Because of the closed-loop control, its motion accuracy and position stability are very high, which is suitable for applications that need high-precision control.

2. Stepper motor: open loop control may lead to cumulative error with relatively low accuracy, but in the absence of overload, stepper motor can maintain good stepper accuracy.

3. torque factor:

1, servo motor: can provide high torque in the whole speed range, especially at low speed can also maintain high output torque.

2. Stepper motor: at low speed, the torque may drop, and the torque will be reduced at high speed.

4. Speed response:

1, servo motor: fast response speed, short acceleration and deceleration time.

2, stepper motor: the response speed is relatively slow, the acceleration and deceleration is not as flexible as the servo motor.

5. application area:

1, servo motor: commonly used for high requirements of automation equipment and precision control occasions, such as robots, CNC machine tools, printing machinery, etc.

2. Stepper motor: suitable for applications that do not need very precise position control, such as 3D printer, engraving machine, automatic assembly line, etc.

Vi. Cost:

1, servo motor: due to its complex control system and high precision, the cost is usually higher than the stepper motor.

2, stepping motor: the system is relatively simple, the cost is relatively low.

VII. Complexity:

1, servo motor: need more complex control circuit and drive, setting and debugging is more complex.

2, Stepper motor: simple control, easy to implement.

To sum up, the choice of servo motor or stepper motor needs to be comprehensively considered according to the specific application requirements, accuracy requirements, cost budget and other factors.