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A Rotary Test Fixture for Steady-State Position Error Modeling

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  131620626,  2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: @2013
Authors:   Michael P Sama, Timothy S Stombaugh
Keywords:   Global Navigation Satellite-based System Precision Agriculture Tracking Total Station Dynamic Error Standardized Testing

Abstract. A rotary test fixture was deigned to evaluate the performance of a tracking total station (TTS) and to develop dynamic global navigation satellite-based system (GNSS) error models. The rotary test fixture consisted of several electrical and mechanical components that were integrated to form the system. The major components include a variable speed drive mechanism, embedded control system, and a high-precision optical encoder for position feedback. Angular velocity and acceleration criteria were used to specify the component requirements and were based on velocities used in ISO 12188-1. The test fixture was capable of producing angular velocities up to 5.0 rad/s (+/-0.007 rad/s) at a 1 m radius.

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