Article | November 1, 2016

Improving Accuracy Of Long Travel Linear Positioning Stages With Error Mapping

Source: PI (Physik Instrumente) LP
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Improving Accuracy Of Long Travel Linear Positioning Stages With Error Mapping

A linear encoder can be used to significantly improve the accuracy and repeatability of stepper or servo-motor positioning stages, but even the high-end linear encoders have linearity errors. To reduce these errors, a laser interferometer measures them and uses a motion controller with the capability to store a dynamic error map. Download PI’s blog article for more information on how to improve linear accuracy of long travel linear positioning stages with error mapping.