Optical Angular Encoder Installation Error Measurement and Calibration by Ring Laser Gyroscope

Author

Qin, Shiqiao ; Huang, Zongsheng ; Wang, Xingshu

Author_Institution

Optoelectric Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China

Volume

59

Issue

3

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

506

Lastpage

511

Abstract

This paper deals with the installation errors of an optical angular encoder (OAE). A harmonic model is proposed to describe the installation errors, including the effects of eccentricity, swash, and distortion. Moreover, a method of OAE calibration with the ring laser gyroscope (RLG) is introduced. The calibration method can potentially reach the accuracy of 0.1". The calibration method is proved to be experimentally effective. With the harmonic model obtained from the experiment, the calibration of the OAE can be carried out in real time.

Keywords

angular measurement; error analysis; gyroscopes; harmonic distortion; harmonics; optical variables measurement; ring lasers; distortion; eccentricity; harmonic model; installation error measurement; optical angular encoder calibration; ring laser gyroscope; swash; Automation; Calibration; Distortion measurement; Gyroscopes; Harmonic distortion; Laser modes; Laser noise; Machine tools; Optical distortion; Ring lasers; Calibration; error; measurement; optical angular encoder (OAE); ring laser gyroscope (RLG);

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2009.2022104

Filename

5406266