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Proceedings Paper

Application of smart structure concepts to vibration suppression of a cryocooler coldfinger
Author(s): Robert J. Glaser; Chin-Po Kuo; John A. Garba
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Paper Abstract

A flight experiment demonstrating vibration suppression using smart structure technology is being flown on a small British satellite in late 1993. Piezo actuators are used to suppress motion of the tip of a cryocooler coldfinger in three dimensions. Two actuation methods are being demonstrated: low voltage piezo translators and applique ceramics. The applique ceramics stretch the coldfinger to cancel the tip motion and are discussed in detail in a companion paper. Commercially available piezo translators displace the entire cryocooler to cancel the motion of the tip of the coldfinger as measured by three eddy current transducers. Two types of control systems are being demonstrated: a real time analog control system using position feedback, and a digital feed forward controller that updates its waveform every second or so.

Paper Details

Date Published: 8 September 1993
PDF: 9 pages
Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); doi: 10.1117/12.152790
Show Author Affiliations
Robert J. Glaser, Jet Propulsion Lab. (United States)
Chin-Po Kuo, Jet Propulsion Lab. (United States)
John A. Garba, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 1917:
Smart Structures and Materials 1993: Smart Structures and Intelligent Systems
Nesbitt W. Hagood; Gareth J. Knowles, Editor(s)

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