통합 검색 | Korea Science

이기찬;이세규;박세광;권기진;조진호;이상흔
- 대한전기학회:학술대회논문집
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- 대한전기학회 1999년도 추계학술대회 논문집 학회본부 C
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- pp.1142-1144
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- 1999
A 4-beam cross type silicon elastic body was fabricated for the electromagnetic type vibration micro transducer. To improve energy transfer efficiency, the structure and size of vibration transducer were optimized by the FEA simulation package. Experimental results of the fabricated transducer shows $0.5{\sim}8$ dyne of vibration force at the condition of $1{\sim}4$ mA of current source $100{\sim}7000$ Hz of frequency band width. These results presented the useful applications for micro actuators and sensors.
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한형석;김숙희;임봉혁;허영철
- 한국자동차공학회논문집
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- 제16권3호
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- pp.118-126
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- 2008
The levitation stability of a Maglev vehicle utilizing electromagnetic suspension is primarily influenced by the deformation, roughness, and vibration of the guideway. Optimum design for both the vehicle and the guideway is desirable in order to reduce guideway construction cost, while meeting requirements for stability and ride quality. This paper presents an analysis of the levitation stability of the UTM-01, an urban Maglev vehicle, using a numerical simulation. The ODYN/Maglev, a dynamics analysis program, is used to simulate dynamics to evaluate the stability. A running test of the UTM-01 is also carried out to verify the results of the simulation. Using the simulation results, the levitation stability of the UTM-01 can be numerically analyzed at a variety of vehicle speeds.
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최수영;정준홍;박기헌
- 대한전기학회논문지:시스템및제어부문D
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- 제52권7호
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- pp.401-409
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- 2003
This paper describes the design and the performance analysis of an $H_2$ controller for noncollocated active vibrating systems. An experiment for the active vibration control of a flexible structure is performed. The experimental model used is a cantilever beam controlled by an active damping system consisting of a laser sensor and an electromagnetic actuator. The $H_2$ controller design is based on the reduced order model and the designed system is capable of attenuating vibration without causing spillover instability. The design procedure to prevent spillover instability is described via the sensitivity analysis. The performances of the controller are verified by experimental results.
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최수영;정준홍;박기헌
- 대한전기학회논문지:전기물성ㆍ응용부문C
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- 제52권7호
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- pp.401-401
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- 2003
This paper describes the design and the performance analysis of an Ha controller for noncollocated active vibrating systems. An experiment for the active vibration control of a flexible structure is performed. The experimental model used is a cantilever beam controlled by an active damping system consisting of a laser sensor and an electromagnetic actuator. The $H_2$ controller design is based on the reduced order model and the designed system is capable of attenuating vibration without causing spillover instability, The design procedure to prevent spillover instability is described via the sensitivity analysis. The performances of the controller are verified by experimental results.
KSCI