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Taguchi 실험계획법을 이용한 미세입자 분사가공조건 획득에 관한 연구
박동진(D. J. Park),이인환(I. H. Lee),고태조(T. J. Ko),김희술(H. S. Kim) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
Abrasive jet machining (AJM) has a large number of parameters such as powder flow rate, air pressure, diameter of abrasive, stand off distance, material hardness and fracture toughness, etc. It is not easy matter to control those parameter. To achieve high accurate machining, in this study, Taguchi method was used to select process parameters. The objective of the optimization was to get higher material removal rate (MRR). From the experiments and analysis, some process parameters were found to make efficient machining.
고속 주행시 횡가속도 제어를 위한 MDPS 시스템 개발에 관한 연구
박동진(T.J.Park),윤석찬(S.C.Yun),한창수(C.S.Han),이상곤(S.G. Lee),구상순(S.S.Goo),우덕현(D.H.Wuh) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_2
Power steering systems for automobiles are becoming more popular for reduceing steering efforts of the drivers, especially during parking lot maneuver. Though hydraulic power steering has widely usec for many years . the efficiency of hydraulic system is not high enough. The MDPS system can solve the problems associated with the hydraulic power steering system. In this study, the MDPS system with ball-screw mechanism is proposed by the bond graph modeling which has the motor, torque sensor, ball screw mechanism and so on. On the basis of the velocity boosting torque controller, the lateral acceleration controller is added. As well as the result, we can set constant frequency characteristics and enhance directional stability at high speed maneuver by controlling MDPS motor with proportional to steering wheel angular velocity.<br/>
Development of the Gait Assistant Mobile Robot using Ergonomics Design
장재호(J. H. Jang),박동진(T. J. Park),한창수(C. S. Han),한정수(J. S. Han) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
In this study, the concept of autonomous mobility is applied to a gait support mobile robot. The aim of the development of the service robot is to assist the elderly with gait rehabilitation. This study proposes an ergonomic service robot design parameter. The gait assistant path pattern is derived from analysis of the elderly gait. A lever is installed in the AMR in order to measure both the pulling force and the leading force of the elderly. The path generation of the mobile robot is developed through consideration and analysis of elderly gait patterns. The ergonomic design parameters (dimensions, action scope and working space) are determined based on moving scope of the elderly. The gait assistant mobile robot was offered the elderly guide service and internet service based on the ergonomic design parameters.