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CAD/CAE 기법을 이용한 궤도차량 Roller 역 설계 기법 연구
차태로(Taero Cha),송인호(Inho Song),최진환(Jinwhan Choi) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_2
In this paper a new concept of the part design process using contemporary CAD/CAE technologies are suggested for tracked vehicle part components. Since the design and development specifications of the vehicle components are totally depended on the system integration manufactures, part suppliers can hardly improve design technologies of the vehicle components. It can cause serious burden for system integration manufactures and makes part suppliers less competitive in the market. Thanks to the rapid developments of virtual prototyping technologies designers of the vehicle components in the part manufactures can closely estimate the design and development specifications with open and limited data and facilities. In this investigation a reverse estimation of design procedures for track roller system are proposed and a case study of tracked vehicle manufactures and part suppliers are presented accordingly.
로봇-인간 충돌을 고려한 협동로봇의 물리적 안전제어 알고리즘 개발
신헌섭(Heonseop Shin),서광(Seo Kwang),최진환(Jinwhan Choi),임성수(Sungsoo Rhim) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
The application of robotic manipulator has been expanded from the stand-alone operation in the strictly separated from the human workspace to the collaborative operation where it shares the workspace with human. Following this change, safety issue caused by collision between robot and human is focused on. This paper introduces risk reduction method which ensures that the contact force and pressure do not exceed the human injury threshold when robot-human collision by controlling the speed. To evaluate the collision safety of robot, contact pressure and force are calculated considering the part of robot in contact with a human. In order not to exceed the threshold pressure specified in ISO/TS 15066, a robot safety control algorithm is presented which controls the velocity of impactor. The effectiveness of the algorithm is verified with several simulation results.
서문석(Mun-suk Suh),박동창(Dong-Chang Park),최진환(JinWhan Choi),이승종(Seungjong Yi),허건수(Kunsoo Huh),윤덕진(Dukjean yun),신장호(Janghoo Shin) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.5_2
The mobility of tracked vehicles is mainly influenced by the interaction between tracks and soil, so that the characteristics of their interactions are quite important for the tracked vehicle study. In particular, the track tension is closely related to the maneuverability of tracked vehicles and the durability of tracks and suspension systems. In order to minimize the excessive load on the tracks and to prevent the peaI-off of tracks from the road-wheels, the Dynamic Track Tensioning System (DTTS) which maintains the optimum track tension throughout the maneuver is required. Because it is very difficult to measure the track tension in real-time, the track tension needs to be estimated for realizing the DTTS system. In this paper, track tension estimation methods are validated experimentally with real tracked vehicles. The tracked vehicles are instrumented with severaI sensors including gyro, accelerometer, LVDT, etc. The DSP processor board is programmed with the estimation algorithm and calculates the tension in real-time based on the measured output. The estimated tension is compared with the real tension that is measured by specially prepared DTIS sensors.<br/> <br/>