http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
강원찬,신석두,김영동 조선대학교 에너지.자원신기술연구소 2000 에너지·자원신기술연구소 논문지 Vol.22 No.2
In this paper, We have developed the high-speed controller for haptic control. The proposed controller is based on the PCI/FPGA technology, which can calculate the real position and transmit the force data to device rapidly. The haptic system is composed of 6DOF force display device, high-speed controller. The developed system will be used on constructing the dynamical virtual environment. To show the efficiency of proposed system, we designed simulation program of force-reflecting. As the result of the experiment, we found that the controller has much higher resolution than some other controllers. The system is so efficient in a 1 PC-based system with l[kHz] haptic interrupt cycle.
강원찬,김동옥,신석두,김영동 전력전자학회 1999 전력전자학회 논문지 Vol.4 No.5
본 논문에서는 가상환경 내의 물체로부터 역감을 얻을 수 있는 3자유도 힘 반향 장치를 제안한다. 이 시스템은 디바이스와 가상환경의 모델과 힘 반향 렌더링 알고리즘 등으로 구성되었다. 평행링크 메커니즘과 와이어에 의한 토크전달 그리고 임피던스 제어가 가능한 제어기를 사용해 3자유도 힘 반향 역감장치(Force-reflecting device)를 설계하였다. 위치 함수만으로 계산되는 힘 반향동작은 God-Object 알고리즘을 사용했다. 3차원 가상물체와 시험 제작한 역감장치(Force-reflecting device)를 인터페이스 실험을 통해 3차원 가상물체와 접촉과 비접촉 그리고 푸쉬 버튼을 만지는 느낌을 검출하였다. In this paper, we present the 3DOF force-rei1ecting interface which allows to acquire force of objc'Ct within a a virtual environment. This system is comlxlsed of device, virtual environment model, and force-rei1ecting r rendering algorithm. We design a J DOF force reflecting device using the pc$\alpha$allel linkage, torque shared by W wire, and the controller of system applied by impedance control algorithm. The force reflecting behaviour i implemented as a function position is equivalent to controlling the mechanical impedance felt by the user. E Especially how force should be supplied to user, we know using a God-Object algorithm As we experiment a system implement$\varepsilon$d by the interface of 3D virtual object and 3DOF force reJll'Cting i interface, we can feel a contact, non contact of :)D virtual object surface and sensin앙 of push button model.utton model.
실시간 그래픽 디포메이션 알고리즘을 이용한 가상환경제어
강원찬,김남오,최창주 대한전기학회 2004 전기학회논문지 D Vol.53 No.5(D)
In the established virtual-reality system, although it is possible to transact a faculty of sensation and graphic in a single PC, virtual object forcibly treated with rigid body for the reason of the huge amount of calculation, and the number of polygon is restricted. Furthermore, there is some difficulty in the financial aspect and a program field, because the existing virtual-reality system needs at least two workstations or super computers. In this study, the new force-reflecting algorithm called as "Proxy" and a finite element method of Hyperion are applied to this system in order to transact in real-time. Consequently, though the number of polygon, which brings about an obstacle is increased in the real-time graphic transaction, this system makes it possible to transact in the real-time, not being influenced by the size of the virtual object.
강원찬(Won-Chan Kang),김대현(Dae-Hyun Kim),김영동(Young-Dong Kim) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
This paper describes the evaluation of a force-reflecting interface with ultrasonic motors(USMs). The force-reflecting interface allows a human to feel object within virtual environment. To effectively display the mechanical impedance of the human hand we need a haptic device with specific characteristics, such as low inertia, almost zero friction and very high stiffness. USMs have attracted considerable attention as the actuator satisfied these conditions USMs combine features such as high driving torque at low rotational speed, high holding torque and fast response, therefore we studied two degree of freedom force-reflecting haptic system.<br/> <br/>
강원찬(Won-Chan Kang),김동옥(Dong-Ok Kim),신석두(Suck-Doo Shin),김영동(Young-Dong Kim) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
In this paper, We have developed the high-speed controller for haptic control. The proposed controller is based on the PCI/FPGA technology, which can calculate the real positoon and transmit the force data to device rapidly<br/> The haptic system is composed of 6DOF force display device, high-speed controller. The developed system will be used on constructing the dynamical virtual environment. To show the efficiency of our system, we designed simulation program of force-reflecting As the result of the experiment, we found that the controller has much higher resolution than some other controllers. It is so efficient in a I PC-based system with 1[kHz] haptic interrupt cycle.
증례 : 소화기 ; 메켈 게실의 장간막게실띠로 유발된 반복적인 소장 폐쇄
강원찬 ( Won Chan Kang ),이윤정 ( Yoon Jeong Lee ),김수정 ( Soo Jeong Kim ),권세웅 ( Se Woong Kwon ),성인경 ( In Kyung Seong ),정은주 ( Eun Joo Jeong ),홍성노 ( Sung Noh Hong ) 대한내과학회 2014 대한내과학회지 Vol.87 No.6
저자들은 반복적인 복통을 호소하는 24세 남자 환자에서 복통의 원인을 방사선학적 방법으로 진단하지 못하였으나 단일 풍선 소장내시경에서 폐쇄를 확인하였고 복강경을 통해 메켈 게실 기시부와 연결된 장간막게실띠를 진단하고 치료하였기에 문헌고찰과 함께 보고하는 바이다. Meckel diverticulum is the most common congenital anomaly of the gastrointestinal system. Although it is commonly asymptomatic in adults, Meckel diverticulum can lead to intussusception, volvulus, inflammatory adhesions, or an internal hernia. However, small bowel obstruction due to a mesodiverticular band of Meckel diverticulum is rare. We report a case of a 24-year-old man who complained of abdominal pain and vomiting caused by recurrent small bowel obstruction. He had undergone no previous abdominal surgery. Abdominal computed tomography revealed a transition point at the mid-to-distal ileum. To identify the cause of the obstruction, we performed single-balloon enteroscopy, which revealed extrinsic compression at the proximal ileum 100 cm from the ileocecal valve. After marking the obstruction site, subsequent laparoscopy revealed a Meckel diverticulum with a mesodiverticular band, which entrapped a bowel loop and caused the recurrent small bowel obstruction. The patient was treated successfully with laparoscopic diverticulectomy. (Korean J Med 2014,87:705-709)