Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1998.07e
- /
- Pages.1840-1842
- /
- 1998
All-Fiber Optic Gyroscope
전광파이버형 광파이버 자이로
- Kim, In-Soo S. (Optical Technology Research Group, KERI) ;
- Kim, Yo-Hee (Optical Technology Research Group, KERI)
- Published : 1998.07.20
Abstract
Gyroscope is a very important core sensor, as a rotation sensor in inertial space, in inertial guidance and navigation system on aeronautics, plane, vessel and so on for civilian and millitary applications. Mechnical gyroscopes, adopting a principle of spinning a top, have been used in many application system. These mechnical gyroscopes need high power consumption, long warming time and complicated peripheral devices. But fiber-optic gyroscopes, based on the Sagnac effect, have novel advantages as small volume. simple scheme, low power consumption and high reliability. So we have developed a Intermediate grade All-fiber Optic Gyroscope, which has open-loop and minimum reciprocal configuration scheme. We have designed feedback circuits for stability of amplitude and phase using four lock-in amplifier(LIA) circuits and also used for noise limitation. This paper describes the scheme of optical part and electronic part and also test results of this all-fiber optic gyroscope. The performance have been achieved as long-term bias drift of