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자율주행차량용 컬럼 동축타입 SBW 반력장치의 컴팩트화에 관한 연구
김재서(Jaeseo Kim),김일용(Ilryong Kim),이재혁(Jaehyuk Lee) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
With the increasing interest in autonomous vehicles in the automotive industry, there has been a lot of research on vehicle steering systems. In fully autonomous technology, there is no driver control, so it is essential to develop an electrical signal processing device through sensors without mechanical connections such as U-joints. To meet this need, a lot of research is being done in the development of Steer by Wire (SBW). The SBW system consists of a Road Wheel Actuator (RWA) which steers the rack at the bottom of the vehicle at the driver’s will and a Steering Force Actuator (SFA) which appropriately provides a steering feel that changes depending on the driving environment. The SFA is in the cabin of the vehicle, close to the steering wheel, and often uses the same type of worm gear reducer as the EPS (Electric Power Steering). However, since the motor is located on the side of the system the package is unfavorable and there are many space difficulties to perform the storage function in the future, the development of a coaxial type of reaction force device which uses space efficiently and is very advantageous for the storage structure is attracting attention. This paper describes the research on the compactness of the column coaxial type reaction force unit, which was carried out to further reduce the size and increase the cost competitiveness, and the main design contents.
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하은희(Eunhee Ha),박혜숙(Hyesook Park),정최경희(Kyunghee Jungchoi),손지언(Jieun Son),김일용(Ilryong Kim),이종태(Jongtae Lee),조수헌(Soohun Cho) 한국의학교육학회 2002 Korean journal of medical education Vol.14 No.1
Purpose: This study was performed to obtain baseline information about the occupational and environmental medicine (OEM) residency programs in Korea. Methods: We surveyed 39 residents for the present training condition, satisfaction, vision of OEM, the condition and satisfaction after residency programs by self- administered questionnaire. Results: Residents want to get appropriate clinical and practical training to be a medical director in a factory or specialist of the occupational medicine based at a hospital. They report, however, that current system for OEM residency training program is not appropriate. The curricula, duration of the each curriculum, level of training hospital or institute need to be reconsidered. Conclusions: We need to develop more systematic residency program with support from government and OEM society.
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