Computer Science – Performance
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.231..207f&link_type=abstract
In ESA Second European Space Mechanisms and Tribology Symposium p 207-212 (SEE N86-27353 18-18)
Computer Science
Performance
Coders, Electric Contacts, Position Indicators, Spacecraft Components, Accelerated Life Tests, Automatic Test Equipment, Ball Bearings, Thermal Vacuum Tests, Tribology
Scientific paper
An electromechanical digital position encoder, based on existing commercial technology, for spacecraft applications is described. The device contains electrical wiping contacts, a gear mechanism, and plain and rolling-element bearings all operating without wet lubrication. Designed to function continuously for 10 years, certain contacts will perform in excess of 20 million cycles. To investigate the performance of these contacts, automatic test equipment was designed to monitor the accuracy of 8192 separate output conditions on a regular basis throughout an accelerated-life thermal vacuum test. The equipment also checks for missing bits and edge noise and logs any errors that are found.
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