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Development of absolute angular encoder design on coordinate photodetectors
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Paper Abstract

Control of the position of the object is an important task in the industry. For this task, use special devices that are encoders. Encoders are needed for feedback when moving, or building coordinate systems. Unfortunately, for solving some problems, absolute angular encoders have not suitable dimensions. This is due to the use of code disks in systems with good accuracy. The design of the encoder is proposed on the basis of position-sensitive photodetectors, which implies smaller dimensions while maintaining accuracy characteristics. The installation unit of the photodetector has the ability to adjust the alignment of the center of the photodetector and the axis of rotation of the shaft, since according to the study it was found that this error has the greatest impact on accuracy. The brand illumination system is developed. The brand is projected onto the photosensitive surface of the photodetector. Replacement of the photodetector provides for the replacement of the node setup of the sensor.

Paper Details

Date Published: 21 June 2019
PDF: 6 pages
Proc. SPIE 11056, Optical Measurement Systems for Industrial Inspection XI, 1105640 (21 June 2019); doi: 10.1117/12.2525862
Show Author Affiliations
Kirill S. Povarov, ITMO Univ. (Russian Federation)
Sergey S. Mitrofanov, ITMO Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 11056:
Optical Measurement Systems for Industrial Inspection XI
Peter Lehmann; Wolfgang Osten; Armando Albertazzi Gonçalves Jr., Editor(s)

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