Browse > Article
http://dx.doi.org/10.5139/JKSAS.2009.37.8.789

Deadzone Elimination of Closed-Loop Fiber Optic Gyro using Pulse Dithering  

Chong, Kyoung-Ho (국방과학연구소 종합시험단 1-3)
Do, Jae-Chul (국방과학연구소 종합시험단 1-3)
Jo, Min-Sik (국방과학연구소 종합시험단 1-3)
Song, Ki-Won (국방과학연구소 종합시험단 1-3)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.37, no.8, 2009 , pp. 789-797 More about this Journal
Abstract
Gyroscope's deadzone is a region where can not detect the rate even though the actual rotation is applied. This paper analyzed the cause of deadzone by modeling/simulation and introduced pulse dithering method to overcome. From the testing of 3-axis fiber optic gyro system using 900m fiber, it confirmed deadzone could be effectively eliminated by combination of three factors, dither amplitude, dither frequency, and gyro loop gain.
Keywords
Deadzone; Closed-Loop Fiber Optic Gyro; Modeling and Simulation; Pulse Dithering;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 G. Spahlinger, "Error Compensation via Signal Correlation in High Precision Closed-Loop Fiber Optic Gyros", SPIE Vol.2387, 1996.   DOI
2 Robert A. Kovacs, "Fiber Optic Gyroscopewith Reduced Non-linearity at Low AngularRates", 21st Annual AAS Guidance and ControlConference, AAS 98-043, 1998.
3 정경호 외, “폐루프 광섬유자이로의 불감응 영역 오차 감소를 위한 모델링 시뮬레이션”, 제 14차 유도무기 학술회의, 2007. 11.
4 도재철, “디지털 폐루프 신호처리를 적용한광섬유 자이로 설계 및 성능평가”, 한국항공우주학회, 제 34권 9호 pp. 97-103, 2006. 9.
5 G. A. Sanders, et al., "Fiber Optic Gyros for Space, Marine and Aviation Applications", SPIE Vol. 2837, 1996.   DOI
6 George A. Pavlath, "Closed-loop fiber optic gyros", SPIE Vol. 2837, 1996.   DOI
7 Michael S. Bielas, "Stochastic and dynamic modeling of fiber gyros", SPIE Vol. 2292, 1994.   DOI
8 H. C. Lefevre, "Fiber Optic Gyroscope",Artech House, 1993.
9 H. C. Lefevre, "Fundamentals of the Interferometric Fiber-Optic Gyroscope", SPIE Vol. 2837, 1996.   DOI