파워 스티어링 시스템의 조타력 계산 및 실험적 검증

김대희(Dae-Hee Kim),탁태오(Tea-Oh Tak),국민구(Min-Gu Kuk),전형호(Hyung-Ho Chun),김종갑(Chong-Kap Kim),조성식(Sung-Shik Cho),조남영(Cho Nam-Young) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11

In order to predict required handle torque of a steering system at design state, mass of vehicle, suspension geometry, hydro-mechanical characteristics of a power assisted system should be considered. In this research, a multibody approach to calculate handle torque and rackbar force as a function of tire contact patch friction torque is proposed. For validation, the computed rackbar force and handle torque are compared to the measured values obtained through actual vehicle test, and they showed good correlation. This computational procedure will be implemented in a steering system analysis and design software to predict handle torque and determine required suspension geometry and power assist system characteristics.

X-by-wire를 장착한 통합안전시스템 개발

강신길(Sheen Gil Kang),김종갑(Chong Kap Kim) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.4

안전 및 에너지 효율에 대한 소비자 요구는 차량 전자 시스템을 더욱 복잡하게 만들고 있다. 본 연구는 X-by-Wire를 장착한 통합 안전 시스템에 대한 것이다. 통합 안전 시스템은 통합관측기로부터 차량의 횡슬립각을 모니터링하여 차량이 안정화 되도록 제어하고, 레이더와 비전으로부터의 정보와 통합관측기로부터의 횡이동량을 모니터링 하여 급작스런 장애물로부터 쉽게 회피할 수 있도록 보조한다. 통합 안전 시스템을 개발하기 위한 기본 컴포넌트와 아키텍처를 설명한다. 아키텍처 설계를 위한 전략이 유도외고 현재 개발현황 및 제약사항에 대하여 요약하였다. 마지막으로 양산 가능성에 대하여 언급하였다. Consumer’s needs for safety and energy efficiency make the vehicle electronic system to be complex more and more. This study is about a development of integrated vehicle safety system equipped with X-by-Wires, integrated ECU and 6 degree of freedom inertial sensor. This integrated system controls a vehicle to be stable by monitoring the side slip angle of vehicle from integrated vehicle observer in unstable cornering, and assists drivers steering effort by monitoring lateral movement of vehicle from integrated vehicle observer, information from radar and vision in emergency avoidance from abrupt obstacles. Elementary components for development of this system and its architecture are explained. Strategy for architecture design is derived and current state of development and constraints are summarized. Finally possibility of series production is discussed.

의약외품중 산화에칠렌가스의 잔류량 분석

이정표(Jeong Pyo Lee),김영옥(Young Ok Kim),손경훈(Kyung Hun Son),양성준(Seong Jun Yang),백옥진(Ock Jin Paek),양원준(Won Jun Yang),김종갑(Chong Kap Kim),최상숙(Sang Sook Choi) 大韓藥學會 2001 약학회지 Vol.45 No.5

The quasi-drugs including nonwoven fabric and gauze were sterilized using ethylene oxide (EO) gas. Residual EO in the quasi-drugs was extracted with water (20 Ml of water for 1 g of sample) for 24h at 37oC. Residual EO was determined using GC. The optimal analytical conditions were as follows : column, Carbowax 20M (1.D. 0.2 mm): mobile phase, helium with 30 mumin; oven temperature 50oC, injector temperature 180oC, detector temperature 200oC. The detection limit for EO was 0.10μg/Ml. When the residual EO extracted from nonwoven fabric and gauze was determined, it took more than 9h to get the lower level than 25 rpm which is the limit value of FDA guideline. When the EO residues, etcylene chlorohydrine (ECH) and ethylene glycol (EG) in the 7 commercially available quasi-drugs were determined, no residual EO, ECH, EG were found from the seven commercially available quasi-drugs analyzed by this method.

기능성화장품의 기능성평가에 관한 연구(I) -자위선차단화장품의 in vitro 시험법 연구

손경훈 ( Kyung Hun Son ),김영옥 ( Young Ok Kim ),이정표 ( Jeong Pyo Lee ),양성준 ( Seong Jun Yang ),백옥진 ( Ock Jin Paek ),김원희 ( Won Hee Kim ),김종갑 ( Chong Kap Kim ),허문영 ( Moon Young Heo ),최상숙 ( Sang Sook Choi ) 대한화장품학회 2002 대한화장품학회지 Vol.28 No.3

인체실험(in vivo) 방법과의 상관성이 우수한 in vitro 자외선차단지수(SPF) 측정방법을 개발하고자 본 연구를 수행하였다. 표준자외선차단제인 8% homomentyl salicyate(HMS) 제제와 P3 reference standard 제제 및 기능성화장품중 자외선차단화장품을 사용하여 자외선차단지수측정기(SPF 290 analyzer)를 가지고 in vitro 자외선차단지수를 측정하고, 인체실험과의 상관계수를 구하였다. 8% HMS 제제 및 P3 Reference standard 제제의 in vitro SPF 결과는 식약청고시 2001-64호의 규정과 유사한 결과를 나타내었고, 크림 및 로오숀 제형에서는 상관계수 0.9506 및 0.9769로서 인체실험과 높은 상관성을 나타내었다. 메이크업베이스 및 리퀴드파운데이션, 사용시 흔들어 쓰는 로오숀, 압축분말은 각각 상관계수 0.8812, 0.8632, 0.5984를 나타내었으며. 압축분말의 도포를 위해서는 크림베이스와 1:0.8의 비율로 섞는 것이 가장 좋은 결과를 나타내었다 본 실험결과를 통해 사람을 이용한 자외선차단지수 측정방법을 대체할 수 있을 것으로 기대되며, 이 후 자외선차단 화장품의 품질관리에 적용하고, 고시개정의 기초자료로 활용될 수 있을 것으로 기대된다. The present study was undertaken to develop the in vitro sunprotection factor(SPF) measurement method having good correlation with in vivo method. As in vitro method, 8% homomentyl salicylate, P3 reference standard and sunscreens on market were measured using SPF 290 analyzer and were compared the SPF with labed value. In vitro SPF of 8% HMS and P3 reference standard were 4.59 ± 0.12 and 14.94 ± 0.83. There are good correlation, correlation factor were 0.9506 and 0.9769 respectively, between the in vitro and in vivo SPF for the sunscreen creams and lotions examined. Correlation factors of makeup base & liquid goundation, lotion labled with “shake before use”, compact powder were 0.8812, 0.8632 and 0.5984. The best sample applied method of compact powder was 1:0.8 mixture with cream base. These results suggest that the in vitro test method could be used as an alternative method for SPF.

EPS와 완전차량모델의 동시시뮬레이션 기술에 관한 연구

장봉춘(Bongchoon Jang),이승현(Seung Hyeon Lee),김종갑(Chong-Kap Kim) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11

The Electric Power Steering (EPS) mechanism proves to be a bright prospect among passenger vehicles ensuring better vehicle safety and fuel economy. This paper describes the development of concurrent simulation technique and simulation integration technique for analysing EPS control system with a dynamic vehicle system. A full vehicle model from CarSim interacting with EPS control algorithm from Matlab Simulink was concurrently simulated with a sinusoidal input condition. The hand wheel torque and steering wheel angle were evaluated and compared with proving ground experimental data. The comparisons from concurrent simulation show a effective way to develop and validate the control algorithm. This concurrent simulation capability was employed for EPS performance evaluation and calibration as well as for vehicle handling performance integration and synthesis.

조향 및 제동 통합제어를 통한 긴급 운전 지원 시스템 개발

전대석(Dae Seok Jeon),성동현(Dong Hyun Sung),이승현(Seung Hyeon Lee),김종갑(Chong Kap Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5

This research addresses the emergency driving support (EDS) system that assists a driver to avoid forward collision via integrated control of MDPS and ESC. This system is activated when the collision is unavoidable and the driver has intention to avoid collision with steering. If the driver intends to avoid collision via steering, MDPS control assists the steering maneuver while the ESC enhances the vehicle agility. This system comprises collision hazard judgment, driver’s intention judgment, avoidance path generation, and targeted control input calculation. Collision hazard judgment part predicts the collision through front radar and camera sensors. By monitoring vehicle sensor information, the driver’s collision avoidance intention is detected. In order to generate avoidance path vehicle’s heading is considered by measuring the steering direction. Finally, the targeted control input for each actuator is calculated from the error between desired path and vehicle’s current path. The performance of the system is demonstrated by real car test.

지역적 경로 수정을 통한 이동 로봇의 주행 경로 최적화 알고리즘

이동훈(Dong-Hun Lee),곽한주(Hwan-Joo Kwak),김정한(Jung-Han Kim),김종갑(Chong-Kap Kim),박귀태(Gwi-Tae Park) 대한전기학회 2012 정보 및 제어 심포지엄 논문집 Vol.2012 No.4

의약외품중 잔류가스(EO)분석에 관한 연구

이정표,김영옥,손경훈,양성준,정정자,백옥진,양원준,김종갑,최상숙 식품의약품안전청 2000 식품의약품안전청 연보 Vol.4 No.-

산화에칠젠(EO) 가스로 멸균한 부직폰 거즈등 의약외품의 산화에칠렌가스 잔류량을 분석하기 위한 최적의 추출조건은 검체 1튜당-물 20n1의 비율로 37'c에서 24시간 추출한 것이었으며, 가스크로마토그 라프(GC) 분석조건은 Carl)owax 20M (t,D- 0.2mm) 칼럼을 써서 첼륨을 이동간스로 하여 유속 30mL/분, 항온조 온도 SOt, 주입구 온도 180t, 검출 온도 300'c인며, Headspace sampling 조건은 항온조 온도 70'C, 열굉형시간 20분, 주입시간 0.08분이었다. 이와같은 죠건에서 멸균후 방치시간에 따른 산화에칠렌가스 잔류량을 측정해 본 결과 부직포의 경우에는 약 9시간 이후에, 거즈의 경우에는 약 4시간이후에 FDA규제안의 혈액과 접촉하는 기군의 허용기준인 린ppm이하가 되었으며, 무균시험 결과는 적합하였다. 또한, 7종의 시판 의약외품중 산화에칠렌가스 잔류량을 븐석한 결과 산화에칠렌 가스f')검출되지 않았다. The euasi-drugs including nonwoven fabric and gauze was sterilized using ethyiene elude(EO) gas. Resldual EO in the qvasi-drugs was extracted with water (fOmL ofwater for Ig of sample) for 24hrs at 37'C. Residual EO was determined using GC. The optimalanalytical conditi㉠ns were as follows column, Carbowax 20M (1.D. 0.2mm); mobile phase,helium with 30mL/mirl, oven teirlperature 50'C , injector temperature 180'C, detector temperature200 "C. The anal!-tical (:onations o: Headspace sampler were as follows : oven temperature 70"ㄷ ,thermostat time 20ndn, injection time 0.08min. When the residual EO extracted from nonwoven fabric and gauze was determined, it tooltmore than ghrs to get the lower level than 25ppm which is the limit value of FDA guideline. And the EO residues in current 7 quasi-drugs were detenrned. It was found that residualEO are not detected in all of them.