http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
수상로봇의 개발과 충돌 회피 자율 운항에 관한 예비 실험
박정홍(Jeonghong Park),정종대(Jongdae Jung),이윤건(Yoongeon Lee),최현택(Hyun-Taek Choi),최진우(Jinwoo Choi) 제어로봇시스템학회 2020 제어·로봇·시스템학회 논문지 Vol.26 No.7
This paper presents the development and testing of an ASV (Autonomous Surface Vehicle) platform, as well as a collision-free path planning approach, for performing various tasks in maritime environments. The ASV is developed on a catamaran-type hull with integrated systems for navigation and control, electrical power and propulsion, sensing, onboard computing, and wireless communication. In addition, navigation algorithms for improving autonomous capabilities are also implemented on the ASV hardware. More specifically, in order to achieve reliable, collision-free maneuvering between the vehicle and an object, a collision probability is evaluated by considering their respective position uncertainties, which are estimated by a tracking filter based on the extended Kalman filter. Using this concept, a collision-free path planning approach is proposed, which takes into account the dynamic characteristics of the vehicle. To demonstrate the performance and practical feasibility of the developed ASV and the implemented algorithms, preliminary field tests were carried out in an inland water environment, and its results are discussed.
차량용 볼조인트에 사용되는 볼스터드의 피로수명 예측방법 및 선재 제조공정에 따른 피로수명 비교
조규영(Kyuyeong Cho),황효상(Hyosang Hwang),이윤건(Yoongeon Lee) 한국자동차공학회 2020 한국자동차공학회 학술대회 및 전시회 Vol.2020 No.11
In this study, to increase the reliability of prediction of fatigue life, ball studs were classified into the wire rod manufacturing processes and tested, and the results were analyzed. Ball stud uses cold heading quality wire using chromium-molybdenum steel as a material, and three types of wire rod manufacturing processes are typically used: (S)AIP, PASAIP, and PSASAIP. Loads were selected based on the results of FE-analysis, and fatigue tests were conducted on samples classified by the manufacturing process. As a result of the fatigue test, it was confirmed that there was a difference in fatigue life according to the manufacturing process of the wire rod. A method to reduce errors by generating a stress life curve according to the wire rod manufacturing process was proposed.