학술논문
Consideration of Thermal Expansion Compensation for Giant Magnetostrictive Actuator / 超磁歪アクチュエータの熱膨張補償の検討
Document Type
Journal Article
Author
H. Eda; H. Wakiwaka; H. Yajima; K. Ohtake; K. Tashiro; N. Fujiwara; R. Takahashi; Y. Tatsumi; 大嶽 和之; 江田 英之; 田代 晋久; 矢島 久志; 脇若 弘之; 藤原 伸広; 辰巳 義和; 高橋 良太
Source
Journal of the Magnetics Society of Japan. 2009, 33(5):421
Subject
Language
Japanese
ISSN
1882-2924
1882-2932
1882-2932
Abstract
Giant magnetostrictive material (GMM) is fabricated by electromechanical transformation with large magnetostriction and an electro-mechanical coupling factor. Therefore, GMM can be use to make a giant magnetostrictive actuator. However, because the thermal expansion (linear expansion) coefficient of GMM is 12 ppm/°C, expansion and contraction due to temperature change influences the stroke. This paper describes the consideration of thermal expansion compensation for the GMA, and presents: (1) the features of GMM and the principles of operation of GMA, (2) the results of thermal expansion measurements of GMA, and (3) thermal expansion compensation for the tandem structure.