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Developing a real time controlled adaptive MRE-based tunable vibration absorber system for a linear cryogenic cooler

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4 Author(s)
Young-Keun Kim ; Dept. of Mech. Eng., KAIST, Daejeon, South Korea ; Jeong-Hoi Koo ; Kyung-Soo Kim ; Soohyun Kim

To cool down image sensors in observation satellites, a miniature linear cryogenic cooler is used. The cooler operates at a constant frequency and it creates the main vibration disturbance that is transmitted to the image sensors, causing poor image quality. A semi-active vibration system using a tuned vibration absorber (TVA) has shown to be effective for suppressing the cooler vibrations. However, if the cooler operating frequency changes, the off-tuned TVA loses its effectiveness. To automatically retune the TVA to the varying disturbance frequency, this paper proposes a control strategy of the TVA using magnetorheological elastomer(MRE). It focuses on the development of a real time control system for an 2-DOF MRE based TVA applied on a linear cooler.

Published in:

Advanced Intelligent Mechatronics (AIM), 2011 IEEE/ASME International Conference on

Date of Conference:

3-7 July 2011