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압축 공기 냉각을 이용한 자기 변형 구동기의 열해석에 관한 연구
곽용길(Yong Kil Kwak),MD. G. Mostofa,황진동(Jin Dong Hwang),김선호(Sun Ho Kim),안중환(Jung Hwan Ahn) 한국생산제조학회 2009 한국생산제조학회지 Vol.18 No.4
Precision positioning system with magnetostrictive actuator(MA) has widely used in manufacturing devices to control the positioning accuracy to meet the high load and stroke requirements. It has many advantage in comparison with piezoelectric actuator; high force, high strain, high efficient etc. But, the performance of Terfenol-D, the commercially available magnetostrictive material, is highly dependent on the prestress, magnetic field intensity and temperature. Therefore, thermal strain of magnetostrictive material obstructs precision position control of magnetostrictive actuator, magnetostrictive actuator is need of cooling system. In this paper, cooling system using compressed cold air is developed and proper temperature and velocity of compressed cold air is studied by thermal analysis according to applied current.