Design Engineering

Pitch and Roll Stages

OES’ PR100-45-01 and PR100-45-02 precisely measure curvature and angles.

April 15, 2020   by DE Staff

Optimal Engineering Systems, Inc. (OES) introduced two Pitch and Roll stages for the measurement of angles and the curvature of objects. The PR100-45-01 (pictured) is driven by stepper motors and the PR100-45-02 is driven by brushless servo motors with quadrature incremental optical encoders. The pitch axis (lower stage) is a high precision goniometer stage which features preloaded cross roller guides and a high ratio worm drive for smooth motion over a range of travel of +/- 45 degrees. It has a typical accuracy of 0.05 degrees and repeatability of +/- 0.01 degrees.

The 100mm diameter Roll axis (upper stage) has a 180:1 gear ratio, an accuracy of 0.05 degrees and repeatability of +/- 0.01 degrees. The resolution of the PR100-45-01 stepper motor driven duel-axis stage depends on the resolution of the step motor driver resolution or the optical encoder if a servo motor is used. A resolution of 0.001 degrees equivalent to 3.6 arc-sec can be achieved using a10 micro-steps per step stepper motor driver or an encoder with a resolution of 500 cycles per revolution. The PR100-45-02 that features servo motors and optical quadrature encoders are used for very precise closed loop operation and greater speeds.

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