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Improvement of Position Tacking Performance of Magnetostrictive Actuator Using Compressed Air Cooling  

Kwak, Yong-Kil (부산대학교 대학원 지능기계공학과)
Hwang, Jin-Dong (부산대학교 대학원 지능기계공학과)
Kim, Churl-Min (부산대학교 대학원 지능기계공학과)
Kim, Sun-Ho (동의대학교 메카트로닉스공학과)
Ahn, Jung-Hwan (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.16, no.4, 2007 , pp. 51-56 More about this Journal
Abstract
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. This paper present an experimental investigation of the temperature effect on displacement characteristics of magnetostrictive actuator. In this paper, compressed cold air is proposed to improve of positioning accuracy of magnetostrictive actuator. The compressed cold air cooling system has good cooling effect Experimental results confirming the effectiveness of the proposed cooling system as high precision positioning system are also has presented in this paper.
Keywords
Magnetostrictive actuator; Thermal strain; Vortex tube; Compressed air cooling;
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