Journal of the Korean Society for Precision Engineering (한국정밀공학회지)
- Volume 13 Issue 9
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- Pages.54-61
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- 1996
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
Shape Memory Alloy Microactuators
형상기억합금을 이용한 초소형 액츄에이터
- Kim, Byung-Wook ;
- Kim, Kwang-Soo ;
- Cho, Dong-Il
- 김병욱 (서울대학교 전기공학부 대학원) ;
- 김광수 (서울대학교 전기공학부 대학원) ;
- 조동일 (서울대학교 전기공학부)
- Published : 1996.09.01
Abstract
Because of its high energy density, the use of shape memory alloys(SMA) in designing microactuatiors is gaining much attention in recent years. Shape memory alloys can undergo a shape change at a low temperature with a small applied deformation force, and retain this deformation until they are heated, at which point they return to the original shape. This is called the shape memory effect(SME), and a plethora of alloys show this effect. Among them, TiNi-based alloys have relatively high electrical resistivity, which to develope helical-shape memory springs. These springs are used to develop fast protatonist/antagonist configuration actuators. The developed actuator has an actuation speed of 1 mm per 15 .approx. 20 ms and a minimum operating period of 2 sec.
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