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Proceedings Paper

Industrial Applications Of Optical Shaft Encoders
Author(s): Brian W. Edmister
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Paper Abstract

The development of the microprocessor and mini-computer for industrial process control has made the optical shaft angle encoder a natural choice for a position feedback transducer. Many of these applications, however, require the encoder to operate reliably in extremely hostile environments. In response to this, the encoder manufacturer has been faced with reliability problems which fall into the following general categories: 1. Exposure to weather 2. Wide operating and storage temperature range 3. Exposure to corrosive chemicals 4. Severe shock and vibration 5. High electrical noise levels 6. Severe blows to encoder housing 7. Operation in explosive atmospheres Three of these applications expose the encoder to most of these environmental conditions: 1. A jack-up control position feedback for an offshore oil well drilling rig 2. A depth measurement system for oil well logging instrumentation 3. Elevation and azimuth feedback for a solar power plant heliostat

Paper Details

Date Published: 19 November 1980
PDF: 7 pages
Proc. SPIE 0255, Practical Electro-Optical Instruments and Techniques, (19 November 1980); doi: 10.1117/12.959569
Show Author Affiliations
Brian W. Edmister, BEI Electronics, Inc. (United States)

Published in SPIE Proceedings Vol. 0255:
Practical Electro-Optical Instruments and Techniques
Robert L. Kurtz, Editor(s)

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