http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 권혁조(Hyok-Jo Kwon) (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
-
능동 현가장치가 차량의 핸들링에 미치는 영향에 관한 연구
이중섭,권혁조,오재윤,Lee, Jung-Sup,Kwon, Hyok-Jo,Oh, Chae-Youn 대한기계학회 1998 大韓機械學會論文集A Vol.22 No.3
This paper develops a 7 DOF vehicle model to study the effects of the active suspension on ride. The model is used to derive a control law for the active suspension using a full state linear optimal control technique. A wheelbase preview type active suspension is also considered in the control law derivation. The time delay between wheelbases is approximated using Pade approximation technique. The ride model is extended to a 14 DOF handling model. The 14 DOF handling model includes lateral, longitudinal, yaw and four wheel spin motions in addition to the 7 DOF ride model. A control law which is derived considering only ride related parameters is used to study the effects of the active suspension on a vehicle handling. J-turn maneuver simulation results show that the active suspension has a slower response in lateral acceleration and yaw rate, a bigger steady state lateral acceleration and an oversteer tendency. Lane changing maneuver simulation results show that the active suspension has a little bigger lateral acceleration but a much smaller roll angle and roll motion. Braking maneuver simulation results show that the active suspension has a much smaller pitch angle and pitch motion.
-
-
비젼시스템을 이용한 탄성 매니플레이터 모델 개발 및 끝지점 위치 제어에 관한 연구
권혁조,오재윤 전북대학교 공업기술연구소 1998 工學硏究 Vol.29 No.-
This paper studies an end point position control of a flexible manipulator. The flexible manipulator is modeled as a time invariant linear 7th order ARMAX (AutoRegressive Moving Average with eXternal input) model using system identification which does not use any structural informations (end mass, link length, physical properties, moment of inertia etc.). The identified model represents the transfer function between control input(voltage) and end point angular position response(degree) of the flexible manipulator. The control algorithm is developed using PID control technique to show the efficiency of system identification modeling method. End point angular position feedback to the controller is achieved by vision system in real time. The simulation and experimental results show that the identified model is being closely approximated to the real flexible manipulator. And the experimental results show no steady state error, fast settling time and very small residual vibration.
-
권혁조,전지명,김진옥,문일동,오재윤 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-
This study performs a workpiece stiffness and frictional characteristic identification experiments by teleoperation. Experiments are performed using a bilateral force feedback teleoperation system. It is composed of a master manipulator, the slave manipulator equipped with a force/torque sensor, and a real-time control system. To control the teleoperation system, a position-force controller is developed. The slave manipulator is controlled by the master manipulator's position command and the master manipulator is controlled by the force information from the slave manipulator. This study presents a method to find the slave manipulator's stiffness. And, this study presents a method to compute the workpiece stiffness based on the measured pressing force and deflection at the slave manipulator. Also, this study performs a workpiece frictional characteristic identification experiments. In the experiments, the slave manipulator rubs a workpiece with an arbitrary pressing force. While the slave manipulator rubs a workpiece, a vertical force and a frictional force are measured and the ratio of a frictional force to a vertical force is considered as a frictional characteristic.
-
문일동,오재윤,권혁조,이승호 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-
This paper develops a computational model using ADAMS for dynamic characteristic analysis of a large-sized commercial vehicle with an air suspension system at rear axle. The air suspension system is composed of an air spring and a half-long tapered leaf spring. Its ADAMS model has 24 rigid bodies and 15 degree-of-freedom. For its modeling, 24 rigid bodies are connected by 10 cylindrical joints, 4 translational joints, 9 spherical joints, 2 universal joints, and 4 revolute joints. For the analysis of handling performance, a double lane change maneuver simulation is performed using the full vehicle ADAMS model with a trunnion suspension or air suspension at rear axle. The simulation is performed with a constant speed of 50, 60, and 70kph respectively. In the simulation, lateral acceleration, roll angle, and yaw rate at the mass center of frame and cab are measured for the handling analysis. For the analysis of ride performance, a bumpy ride simulation is performed using the model. The simulation is performed with a constant speed of 20kph. The bump used in the simulation has the height of 50, 80, and 100㎜ respectively. In the simulation, vertical displacement and pitch angle at the mass center of cab are measured for the ride performance analysis.
DBpia연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
