What is a servo stepper motor?

A servo stepper motor, also known as closed loop control stepper motor, is a stepper motor with feedback by adding a high-precision encoder, and controlled by servo control algorithms to achieve control of torque, speed, and position loops. It combines the advantages of stepper motor and servo motor.

Speed

After adding closed-loop control to the stepper motor, it can achieve high-speed operation, and the speed can almost be comparable to the servo motor, but it also retains the low-speed characteristics of traditional stepper motors. Servo motors can perform well at high speeds, but there may be overshoot when transitioning from high speed to low speed or stopping.

Overload capacity

The closed-loop stepper motor has higher overload output capacity (such as 1.5 times), which improves the dynamic response ability of the stepper motor.

Noise, heat, and vibration

Under non-rigorous application environments, there is almost no significant difference in noise, heat, and vibration on closed-loop stepper motors .

Precision

Due to use of feedback devices, closed loop stepper motors have ability to detect and correct for missed steps, resulting in higher precision than ordinary stepper motor ,and ensuring accurate positioning and movement.This makes them an ideal choice for applications that require precise positioning, such as in 3D printing, robotics, and automation.

Difficulty of debugging

Debugging and using closed-loop stepper motors is very simple, and only requires adjusting the position of a few potentiometers on the driver. Servo motors have hundreds of parameters, making debugging more complex, and often requiring experienced engineers.

Cost

Closed-loop stepper motors offer cost advantages over servo motors due to their lower upfront and maintenance costs, as well as simpler control systems that don’t require expensive feedback devices. This makes them a more affordable option for applications that require high precision and torque control.

 

Overall, closed-loop stepper motors offer high speed, precision, and overload capacity, while also being easy to use and cost-effective. They are a great choice for applications that require precise control and high performance, but do not necessarily require the high price tag of servo motors. With combination of advantages of servo and stepper motor , closed-loop stepper motors are sure to continue gaining popularity in the industry.