Title: Precision angle comparator using self-calibration of scale errors based on the equal-division-averaged method
Authors: Kim, Jong-Ahn
Kim, Jae Wan
Kang, Chu-Shik
Jin, Jonghan
Eom, Tae Bong
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Pages:4
Language:en
DOI:10.7795/810.20130620F
Resource Type: Text / Report
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Dates: Available: 2013
Issued: 2013-08
File: Download File (application/pdf) 465.99 kB (477175 Bytes)
MD5 Checksum: 348f50921c2e3cae4cfa54206eee979e
SHA256 Checksum: 461e425682c42ed83c1c12bc760204c5889354b343fc4e4fde43ee5192d8ed7d
Abstract: An angle comparator for precision angle measurement is presented, which used the equal-division-averaged (EDA) method
to self-calibrate the scale errors of a divided circle. The angle comparator mainly consists of an air bearing, friction
motors, and a self-calibratable angle encoder. Using the air bearing and friction motors, we can generate the angular position
with the resolution of less than 0.005". The divided circle of the angle encoder has 64800 signal periods within 360° and the final
reading resolution is about 0.005". Through the self-calibration procedure based on the EDA method, the scale error can be effectively compensated.
Other: article based on oral presentation at the conference MacroScale 2011 "Recent developments in traceable dimensional measurements",
Bern-Wabern (Switzerland), 04-06, October, 2011
Citation: KIM, Jong-Ahn, Jae Wan KIM, Chu-Shik KANG, Jonghan JIN and Tae Bong EOM. Precision angle comparator using self-calibration of scale errors based on the equal-division-averaged method. Physikalisch-Technische Bundesanstalt (PTB), 2013. doi: 10.7795/810.20130620F