• 제목/요약/키워드: Micro actuator

검색결과 413건 처리시간 0.035초

마이크로 Inchworm motor 용 Hinge 구조의 특성 해석 (Analysis of hinge structures for micro inchworm motor)

  • 김원효;권호남;김영윤;윤성식;이종현
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1997년도 추계학술대회 논문집
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    • pp.1088-1091
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    • 1997

  • This paper describes the characteristic of hinges on which a lever pivots within a limited angle due to the torque. The hinges are exerted by the thermally expanded actuators connected with a level through hinges. To enhance the stroke of inchworm actuator, FEM(Finite Element Method) was utilized for the characterization in view of stress displacement according to the variation of notch radius and notch width. As a result, notch width of the hinges plays an important part in improvement of micro inchworm actuator.

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초소형 작동형 내시경용 Bending 액츄에이터의 제작 (Fabrication of Bending Actuator for Micro Active Catheter)

  • 이광호;이승기
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1997년도 추계학술대회 논문집 학회본부
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    • pp.615-617
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    • 1997

  • This paper reports experimental results on the fabrication and analysis of millimeter-sized bending actuators for active catheter by use of the shape memory alloy spring and the flexible beam. The major components of micro actuator are shape memory alloy spring, stainless steel strip and two acryl links. The micro actuator with the diameter of 2.0 mm and the length of 25 mm has been fabricated and characterized for the possible application to the micro active catheters. The measured maximum angle is $60^{\circ}$ and the response time is 5 sec.

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마이크로 금속 박판의 동적 물성치 측정을 위한 마이크로 동적 시험 장치 개발에 관한 연구 (A Study on a micro dynamic tester development for a micro property measurement of a micro metal specimen)

  • 이진표;이혜진;황재혁;이낙규;배재성
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2006년도 추계학술대회논문집
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    • pp.163-168
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    • 2006

  • In a micro-unit of electronic-machine, vibration can be excited by a small impact, and this vibration acts as a fatigue load. To measure the vibration effect on the micro unit, a micro dynamic tester is needed to test a micro specimen. In this paper, it has confirmed a movement of the PZT(piezo actuator) to use a sine signal. And, it has confirmed a fracture of specimens by using a tension-tension input signal in PZT. A metal-material property in the micro scale has been tested to compare with the macro scale. A fatigue test has been conducted by using PZT actuator to give a bending-tension effect.

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