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 : 최수호(Suho Choi) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
적층형 IPMC 구동기의 거동 특성 해석 및 실험적 검증
최수호(Suho Choi),양우성(Woosung Yang),신부현(Bu Hyun Shin),이승엽(Seung-Yop Lee) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
IPMCs (Ionic Polymer Metal-Composite) having large deformation have used as biomimetic actuators and sensors in various application fields. This work mainly deals with the static and dynamic electromechanical responses of multi-layered (multimorphs) IPMC structures as actuators. The actuating behavior of IPMC is caused by the bending moments generated by an ion exchange polymer film to an applied voltage. Dynamic characteristics such as the natural frequencies, maximum displacement and resultant force are analyzed and predicted based on the Bernoulli-Euler beam theory including the dynamics of the IPMC, electrode and substrate layers. We also compared the theoretical properties of a symmetric IPMC multimorph with the results by the finite element analysis (FEA) and experiments using 1, 2, 3, 4-layered IPMC multimorphs. In addition, we investigate the effects of the layer number and the layer thickness on the dynamic properties. It is found that there exists an optimum number of IPMC layers to maximize the transverse deflection or the resultant force.
-
최수호(Suho Choi),조인휘(Inwhee Joe),김원태(Wontae Kim) 한국전기전자학회 2019 전기전자학회논문지 Vol.23 No.4
비행하는 드론 기반 네트워킹 서비스는 셀루러 네트워크와 같은 기존 통신 인프라보다 커버리지 반경이 좁기 때문에 많은 핸드오버 이벤트를 유발할 수 있다. 따라서, 컨텐트 스토어를 활용하여 핸드오버 이전에 요청한 데이터를 핸드오버 이후 타겟 네트워크 제공자에게 사전에 캐시 함으로써 잦은 핸드오버에 대응하였다. 시뮬레이션 결과, 핸드오버 이전에 요청한 데이터를 타겟 드론에게 전달하였고 핸드오버를 끝낸 자동차가 타겟 드론을 통해 데이터를 받음으로써 딜레이가 감소함을 확인할 수 있었다. 반면에, 제안하는 방법을 사용하지 않으면 핸드오버에 따른 경로 변경에 대응하지 못하였고 데이터를 요청하는 패킷을 다시 보냄으로써 딜레이가 증가했음을 확인했다. Networking services based on the flying drones may cause many handover events because the coverage radius is narrower than that of the existing infrastructure, such as cellular networks. Therefore, it copes with frequent handover by pre-caching data to target network provider before handover using a content store. As a result of the simulation, it can be confirmed that the delay is lowered. This is because the data that was requested before the handover is delivered to the target drones, and the car that has completed the handover receives the data through the target drones. On the other hand, if the proposed method is not used, it can be confirmed that the delay is increased. This is because it can not cope with the path change due to the handover and re-sends the packet requesting the data.
-
신경 진동자와 IPMC 구동기를 결합한 생체 모방형 시스템
양우성(Woosung Yang),최수호(Suho Choi),이승엽(Seung-Yop Lee) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
We propose a control scheme of the IPMC actuator exploiting neural oscillators to achieve biologically inspired motion generation and control. In general, humans or animals show novel adaptive behaviors regardless of their kinematic configurations against unexpected disturbances or environmental changes. This is because that the entrainment property of the neural oscillator plays a key role to adapt their nervous system to the natural frequency of the interacted environments. Thus we apply the biomimetic approach to a novel control of the IPMC actuator, since the IPMC has many difficulties in control such as nonlinearities, flexibility, and unexpected motion, etc. In order to demonstrate the excellence of its entrainment, we implement experimentally the proposed control approach to the IPMC actuator. The coupled IPMC actuator successfully exhibits the motion excited by the neural oscillator. Experimental results confirm biologically inspired, selfadaptive behaviors that enable the IPMC actuator to make adaptive changes corresponding to unexpected disturbances in phase.
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
