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다물체 동역학 시스템을 위한 독립 좌표에 의한 부분 시스템 합성 방법
송금정(Kum-jung Song),김성수(Sung-Soo Kim) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
Two different subsystem synthesis methods with independent generalized coordinates have been<br/> developed and compared. In each formulation, the subsystem equations of motion are generated in terms of<br/> independent generalized coordinates. The first formulation is based on the relative Cartesian coordinates with<br/> respect to moving subsystem base (virtual) body. The second formulation is based on the relative joint<br/> coordinates using recursive formulation. Computational efficiency of the formulations has been compared<br/> theoretically by the operational counting method.
부분 시스템 해석을 위한 상대 직교 좌표를 이용한 다물체 동역학 공식
김성수(Sung-Soo Kim),송금정(Kum-jung Song),허재영(Jae Young Huh) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.4
Multibody dynamics formulation has been developed based on relative cartesian coordinates for subsystem analysis. Relative cartesian coordinates are defined with respect to a reference body of a subsystem. Relative cartesian formulation inherits the same merits of absolute cartesian formulation, such as generality and easy implementation. Two methods have been applied. One is Largrange Multiplier Elimination method and the other is independent coordinate method. A 1/4 car simulation has been carried out to verify the formulations. Since both methods provide identical results, it proves the validity of the formulation.
김성수(Sung-soo Kim),원문철(Mun-chul Won),허재영(Jae-young Huh),송금정(Kum-jung Song),정상윤(Sang-yun Jung) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this study, a steering wheel sensor has been designed and developed for haptic steering system of a vehicle simulator. The steering wheel sensor consists of a torque transducer to measure reaction forces between ground and tire, and an encoder to measure steering angles. The steering wheel sensor housing has been designed in compact size, in order to put a torque transducer and an encoder together into the limited space between the steering wheel and the shaft. Vehicle handling test such as slalom has been also carried out to inspect performance of tile developed sensor. Test results show reasonable responses of the developed sensor.<br/>