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- 저자 : 곽상훈(Sang-Hun Kwak) (검색결과 3 건)
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곽상훈(Sang-Hun Kwak),박애진(Ae-Jin Park),이지훈(Ji-Hoon Lee),남윤주(Yun-Joo Nam),박명관(Myeong-Kwan Park) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
In this paper, the haptic glove using the MR(magnetic-rheological) actuator is developed and its performance is evaluated through the application to the master-slave robot system. The minature MR actuator proposed for the haptic glove is intended for human user to feel the reflective force from the virtual environment. The flexible link mechanism is applied to improve the position-force transmissibility between the MR actuator and human fingers. Then, the master-slave robot system in 3-DOF is constructed to directly evaluate the mobility and the manipulability of the haptic glove and to indirectly investigate the application possibility of the proposed haptic glove to the practical human-machine interaction environment. The experimental results show the effectiveness of the proposed haptic glove as well as the force reflective system.
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곽상훈,최승호,신도성,김진영,Kwak Sang Hun,Choi Seung Ho,Shin Do Sung,Kim Jin Young 대한음성학회 2002 말소리 Vol.43 No.-
The technology of speech recognition has a wide field of application. The range of such technology is spreading into mobile computing having the large amount of movement for communication equipments at the present time. Particularly, recognition in internet environment is rapidly moving into mobile environment. Because of these environments, users want the faster speed of data transmission and the lighter portable equipment for data access. That is PDA(Personal Digital Assistant). Therefore, we designed a triphone-based text independent vocabulary recognizer for the implementation of speech control in this paper. The text independent vocabulary recognizer is based on the state .joint algorithm with decision trees
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5GHz 대역에서 동작하는 보우타이 모양의 미앤더 마이크로스트립 안테나의 설계 및 제작
곽상훈,윤중한,곽경섭,Kwak Sang hun,Yoon Joong han 한국통신학회 2005 韓國通信學會論文誌 Vol.30 No.4A
본 논문에서는 5GHz 전 대역에서 사용 가능한 미앤더 형태의 마이크로스트립 안테나를 설계하고 제작하였다. 미앤더 형태의 안테나에 공기층을 삽입하고 동축 급전을 주어 VSWR<2에서 충분한 대역을 얻고자 하였다. 미앤더 라인의 길이와 폭, 동축급전의 위치 및 공기층의 두께를 변화시키면서 시뮬레이션 하였으며, 최적화된 파라미터를 가지고 안테나를 제작하였다. 제작된 안테나의 측정 결과는 VSWR<2에서 약 1GHz의 $17.5\%$의 대역폭을 얻었으며, $7.3\sim9.5$ dEi의 이득과 Broad한 방사패턴을 얻었다. In this paper, a meander-type microstrip patch antenna for application in 5GHz-band is designed and fabricated. To obtain enough bandwidth in VSWR<2, the foam is inserted between substrate and ground plane, the coaxial probe source is used. Antenna is simulated varing the length and width of meander line, the position of probe feeding and the thick of airgap. Later anterlna is fabricated with optimizated antenna parameter. The measured result of Fabricated antenna obtained $1GHz(17.5\%)$ bandwidth in VSWR<2$, the gain of $.3\sim9.5$dBi, Unidirectional pattern.
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