http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
디지털 폐루프 신호처리를 적용한 광섬유 자이로 설계 및 성능평가
도재철(Jae-Chul Do),정경호(Kyoung-Ho Chong) 한국항공우주학회 2006 韓國航空宇宙學會誌 Vol.34 No.9
본 논문에서는 디지털 폐루프 신호처리를 이용한 광섬유자이로를 설계하고 성능 시험한 결과를 제시하였다. 회전 입력에 대한 자이로의 피드백 제어를 위해 디지털 세로다인변조기법이 적용되었고, 환산계수의 안정화를 위해 변조진폭 및 광전력 제어회로를 설계하였다. 프로토타입 광섬유자이로를 시험한 결과, 바이어스 안정도 0.34 deg/hr, 환산계수 비선형도약 100ppm, 회전감지 영역 ±500 deg/sec의 성능을 얻었다. This paper described the design and performance evaluation of fiber optic gyro using digital closed-loop processing. For the feedback to null the gyro input rate, digital serrodyne modulation was employed, and for scale factor stabilization, the control circuits of modulation amplitude and optical power are implemented. Performance tests show that prototype fiber optic gyro has bias stability of 0.34 deg/hr, scale factor non-lineality of about 100ppm, and maximum measurement range of ±500 deg/ sec.
도재철(Jae Chul Do),채주영(Joo Young Chai),손종근(Jong Keun Son) 한국생약학회 1991 생약학회지 Vol.22 No.3
Four compounds were isolated from the leaves and stems of Lycopus lucidus and identified as 2α-hydroxy ursolic acid, tormentic acid, β-sitosterol glucoside and linarin by spectroscopic methods.
도재철(Jae-Chul Do),정경호(Kyoung-Ho Chong),조민식(Min-Sik Jo),송기원(Ki-Won Song),문홍기(Hong-Key Moon) 한국항공우주학회 2009 韓國航空宇宙學會誌 Vol.37 No.6
본 논문은 광섬유 간섭계의 제한된 회전 측정범위(π/2[radian]) 확장을 통하여 고속 회전입력을 감지할 수 있는 광섬유자이로 설계에 관한 연구 결과를 기술하였다. 디지털 세로다인 변조 기법을 바탕으로 광섬유자이로 신호처리 회로를 설계하였으며, 제작된 프로토타입 광섬유자이로의 시험결과 약 ±3000[deg/sec]의 고속 회전측정 성능과 약 150[ppm]의 환산계수 성능을 확인하였다. 따라서 본 논문에서는 고속회전 감지를 위한 광섬유자이로 설계의 유효성이 검증되었다. We studied the design of fiber optic gyroscope that enables to sense high rotation by extending the limit of rotation sensibility of fiber optic interferometer. Based on the digital serrodyne modulation technique, the signal processing of fiber optic gyroscope was designed and the prototype fiber optic gyroscope showed the high rotation sensibility up to ±3000[deg/sec] and scale factor performance of about 150[ppm] by the experiments. Accordingly, we confirmed that the design of fiber optic gyroscope was valid for high rotation.
도재철(Jae Chul Do),채주영(Joo Young Chai),손건호(Kun Ho Son) 한국생약학회 1991 생약학회지 Vol.22 No.3
Four triterpenoids were isolated from the leaves and stems of Lycopus lucidus and identified as betulinic acid, oleanolic acid, 3-epimaslinic acid and euscapic acid by spectroscopic methods.
속단(Phlomis umbrosa) 뿌리의 Iridoid 성분에 관한 연구
정근영,도재철,손건호,Jung, Keun-Young,Do, Jae-Chul,Son, Kun-Ho 한국생약학회 1996 생약학회지 Vol.27 No.2
An iridoid glycoside was isolated from the roots of Phlomis umbrosa and identified as sesamoside on the basis of spectroscopic evidence.
백색광 마이켈슨 간섭계를 이용한 광섬유 고리의 편광 교차결합 측정
조민식,도재철,Jo, Min-Sik,Do, Jae-Chul 한국군사과학기술학회 2006 한국군사과학기술학회지 Vol.9 No.3
The investigation of the polarization cross-coupling in fiber coils was made using white light Michelson interferometer. The white light interferometer has a light source of about 13nm spectral bandwidth and measurement resolution of less than -80dB. The measurement found that the 200m fiber coil has a polarization cross-coupling of about -64dB in average and -46dB in maximum.
광섬유자이로의 고리 온도변화에 의한 바이어스 특성 및 온도 보상
조민식,정경호,도재철,최우석,송기원,강수봉,신원철,Jo, Min-Sik,Chong, Kyoung-Ho,Do, Jae-Chul,Choi, Woo-Seok,Song, Ki-Won,Kang, Su-Bong,Shin, Won-Chul 한국군사과학기술학회 2009 한국군사과학기술학회지 Vol.12 No.2
The bias characteristics due to the changes of temperature and temperature gradient of fiber coil are investigated in fiber-optic gyroscope. The bias performance is degraded with the changes of temperature and temperature gradient of fiber coil. The temperature compensation using both the temperature-dependent bias measurement and the temperature-induced error model of fiber-optic gyroscope improves the bias stability about 3 times as much as the uncompensated original case, which leads to very stable bias performance over the temperature range from $-35^{\circ}C$ to $+77^{\circ}C$.
손건호,정근영,도재철,Son, Kun-Ho,Jung, Keun-Young,Do, Jae-Chul 한국생약학회 1993 생약학회지 Vol.24 No.3
Three compounds were isolated from the rhizomes of Dioscorea quinqueloba and identified as $diosgenin\;3-O-{\alpha}_-L-rhamnopyranosyl(1{\rightarrow}2)-{\beta}-_D-glucopyranoside$, dioscin and gracillin by chemical and spectroscopic means.