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1045389X06072365v1
18/11/1137    most recent
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First published on May 24, 2007, doi:10.1177/1045389X06072365

Journal of Intelligent Material Systems and Structures 2007;18:1137.

A more recent version of this article appeared on November 1, 2007
 © 2007 SAGE Publications

Article

Application of Active Micro-vibration Control System using a Giant Magnetostrictive Actuator

Yoshiya Nakamura1, Masanao Nakayama1, Masayuki Kura2, Masashi Yasuda3, Takafunmi Fujita4*

1 Technical Research Institute, Fujita Corporation, 2025-1 Ono, Atsugi, Kanagawa, Japan
2 Fujita Corporation, 4-25-2 Sendagaya, Shibuya-ku, Tokyo, Japan
3 Tokkyokiki Corporation, 10 Minamihatsushima-cho, Amagasaki, Hyogo, Japan
4 Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan

* To whom correspondence should be addressed.


  Abstract

In various leading-edge technology areas, such as semiconductor manufacturing, the requirement for micro-vibration control is increasing. The authors have developed an active six-degrees-of-freedom (6-DOF) micro-vibration control system using an off the shelf, giant magnetostrictive (GMS) actuator. The efficiency of the active micro-vibration control system using a GMS actuator has been verified through several control experiments. However, the active micro-vibration control approach has not previously been applied to actual precision measuring equipment. Therefore, the control performance of such systems has not been verified on a practical application. In this study, an active 6-DOF micro-vibration control system using GMS actuators is developed and applied to buildings in order to provide micro-level-vibration-free space for a focused ion beam (FIB). The outline of the system, the design of the control system, and the results of experimental verification are described. In this application of the active micro-vibration control system, the design of the active micro-vibration control system is carried out taking several factors into consideration. Vibration measurements made after adjusting the micro-vibration control system confirm that the table satisfies the specified requirement and that a clear FIB image is obtained under high-magnification observation.

Key Words: active control, micro-vibration, giant magnetostrictive actuator, precision machine


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