http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
윤덕원(Deokwon Yun),최현석(Hyeunseok Choi),한창수(Changsoo Han),최헌종(Hunjong Choi),홍원표(Wonpyo Hong),강은구(Eungoo Kang) 한국생산제조학회 2005 한국공작기계학회 추계학술대회논문집 Vol.2005 No.-
Recently PZT is used in ultra precision mechanism field. PZT itself has a small driving range although it has a high resolution. Many methods, such as inchworm, impact driving, inertial sliding method, etc., have been applied for moving range expansion. In this study, a new actuating mechanism for rotational motion with two driving PZT is proposed. The actuator which is made by proposed mechanism is able to coarse motion and fine motion And we applied dual mode control to system. The behavior and design parameters of the proposed mechanism are analyzed for improving performance.
한창수(Changsoo Han),윤덕원(Deok won Yun),최현석(Hyeunseok Choi),홍원표(Wonpyo Hong),강은구(Eungoo Kang),최헌종(Hunjong Choi) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
Recently PZT is used in ultra precision mechanism field. PZT itself has a small driving range although it has a high resolution. Many methods, such as inchworm, impact driving, inertial sliding method, etc., have been applied for moving range expansion. In this study, a new actuating mechanism for rotational motion with two driving PZT is proposed. The Fixed-Fixed beam support is applied for compensation of the difference in driving force between expansion and contraction of PZT. The behavior and design parameters of the proposed mechanism are analyzed for improving performance.
Young Ju Cho(조영주),Yong Jung Kwon(권용중),Sunghwan Jin(진성환),Hyeunseok Choi(최현석),Jung-Hoon Lee(이정훈),Seung-Min Yang(양승민),Sun-Woo Choie(최선우),Young Kyu Jeong(정영규) 대한전기학회 2023 대한전기학회 학술대회 논문집 Vol.2023 No.5-1
In humid conditions, water vapor can easily neutralize the surface active sites of metal oxide sensors, leading to a lowering in the sensitivity of the gas sensor and a resultant inaccurate signal in practical applications. Herein, we present a new hybrid sensor by introducing a two-dimensional calcium silicate (CS) nanosheet as a water- trapping layer in SnO2 nanowires. Unlike the heavily wrinkled and aggregated morphology of conventional CS nanosheets, our nanosheet in the hybrid material is ultrathin and flat. Moreover, it was grown in the empty spaces between the spider-web-like networks of SnO2 nanowires without covering the nanowire surface. These two morphological features improve moisture trapping with minimal reduction in the active sensing area. Consequently, stable and sensitive gas detection under humid conditions was achieved in this hybrid sensor. The superior humidity-independent sensing is ascribed to the preferential adsorption of water molecules on hydroscopic CS nanosheets through the hydrogen bond. Based on density functional theory calculations, we deter- mined that the improved gas response is driven by the additional formation of oxygen vacancy in SnO2 due to the diffusion of aliovalent Ca ions from the CS nanosheet.
윤덕원,최현석,한창수,최헌종,홍원표,강은구 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-
Recently PZT is used in ultra precision mechanism field. PZT itself has a small driving range although it has a high resolution. Many methods, such as inchworm, impact driving, inertial sliding method, etc., have been applied for moving range expansion. In this study, a new actuating mechanism for rotational motion with two driving PZT is proposed. The Fixed-Fixed beam support is applied for compensation of the difference in driving force between expansion and contraction of PZT. The behavior and design parameters of the proposed mechanism are analyzed for improving performance.