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CAN Newsletter magazine

Steppers versus servos

The author of this article discusses in detail the benefits and trade-offs of steppers and servos.

The StepIM stepper motor with closed-loop control (Photo: Servotronix)

Dr. Markus Erich working with Servotronix presents in his article closed-loop controlled stepper motors. They are used for example in an automatic positioning table for a 5-axis CNC machine of wooden window frames. “Closed-loop stepper motors change the performance ratio in motion control for many applications,” summarizes the author. By adopting closed-loop control, stepper motors are able to deliver the combined benefits of servos and steppers.

In particular, they require less current. In the referenced woodcutting machine example, closed-loop controlled steppers substituted the servos without changing the CANopen interface. “After only a few month, and with technical support from us, the machine builder was able to present its stepper-based machine in a tradeshow,” reported the author.

If you want to read the full article with detailed information, you can download the PDF here or the full magazine.

Author
Dr. Markus Erlich (Servotronix)


Publish date
2017-03-06
Company

Servotronix

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