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Servo Motors vs. Stepper Motors In Motion Control: How To Choose The Right One For Your Application

It is essential to choose the right motor for your motion control applications in order to maximize efficiency and productivity. There are so many things to consider when choosing between servo and stepper motors.

Understanding the differences and their pros and cons is crucial. This will allow you to match the motor's capabilities with your application.

There are differences between Stepper Motors and Servo Motors for Motion Control Applications

The primary difference between these motors is their overall pole count. Stepper motors are known for having a high number of poles, typically between 50 and 100. Servo motors are between 4 and 12.

This difference in pole count allows stepper motors to move incrementally in a closed loop system with a steady pulse. An encoder is needed to adjust the pulses of servo motors for position control.

Stepper Motors in Motor Control: Due to their high pole count, Pros and consStepper motors provide precise drive control for all motion control applications. They offer a high torque at low speed and are widely available.

Stepper motors are not without their limitations. They can lose up to 80% of their torque when they are running at high speeds. They can cause resonance issues due to their high vibration levels. The heat produced by stepper motors can cause problems in some applications.

Servo Motors in Motion Control - Pros and Cons They operate between 80-90 percent efficiency. Servo motors work in both AC and DC drives, so they are not susceptible to vibration or resonance.

While servo motors offer many advantages, they are also more expensive that stepper motors. Add to that the cost of an encoder and, often, a gearbox and the entire system can quickly become very expensive. Additionally, an encoder or gearbox is required to make the system more complex. This can result in more frequent maintenance and higher cost.

Each motor has pros and cons. You can learn the differences between stepper and the servo motors to help you choose the right motor for your application.