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Proceedings Paper

The high resolution actuator based on giant magnetostriction
Author(s): Lei Wang; Jiu-bin Tan; Shan Zhang
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Paper Abstract

The giant magnetostrictive actuator has some unique characteristic, such as high displacement resolution, big output torque etc, so is suitable for the field of ultra precise measurement and fine machining. The principle of the giant magnetostrictive actuator is based on magnetostriction, and Tb0.27Dy0.73Fe1.9 is drove by magnetic field. So the high resolution of the giant magnetostrictive actuator is relate to uniformity of magnetic field. Furthermore, the resolution of actuator is effect by output setup. Because of magnetic field asymmetry, the giant magnetostrictive actuator based on the principle of electromagnetism transforming can be easily causes of displacement nonlinearity. For this problem, the structure and principle of magnetic field is analyzed based on FEA. For improving the resolution farther, the flexible hinge is used to replace to the traditional output setup. At last, the principle of this type of actuator is validated through experiments.

Paper Details

Date Published: 3 October 2008
PDF: 6 pages
Proc. SPIE 7155, Ninth International Symposium on Laser Metrology, 71552Y (3 October 2008); doi: 10.1117/12.814608
Show Author Affiliations
Lei Wang, Harbin Institute of Technology (China)
Jiu-bin Tan, Harbin Institute of Technology (China)
Shan Zhang, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 7155:
Ninth International Symposium on Laser Metrology
Chenggen Quan; Anand Asundi, Editor(s)

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