Cryocoolers 8 pp 455-463 | Cite as

STRV Cryocooler Tip Motion Suppression

  • R. Glaser
  • R. G. RossJr.
  • D. L. Johnson

Abstract

The Space Technology Research Vehicle (STRV-1b), which was launched aboard an Ariane-4 on June 17, 1994, has a cryocooler vibration suppression experiment on board doing motion suppression of the tip of the coldfinger. STRV-1b is a bread box sized satellite containing a variety of technology demonstrations in addition to the vibration suppression experiment. To meet stringent power, weight, and space constraints, the vibration experiment uses a tiny 1/5-watt 80K Texas Instruments tactical Stirling cooler. Two different tip-motion cancellation techniques are implemented in the experiment: 1) an applique ceramic stretching the coldfinger; and 2) three commercial low voltage piezo-electric translators that move the cryocooler supports. Motion of the coldfinger tip is measured in three dimensions to 10 nanometers using commercial eddy-current transducers. Two different control systems are used: 1) an analog control system using a bandpass filter to suppress the cooler drive fundamental, and 2) a feed forward steady-state harmonic analyzer that continuously updates a command signal to each actuator.

Keywords

Vibration Suppression Digital Controller Cold Finger Motion Suppression Analog Controller 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Kuo, C. P., “Coldfinger Motion Suppression Using a Ceramic Applique,” Proceeding of SPIE’s Smart Structures and Materials Conference’ 93. January 31 — February 4, 1993, Albuquerque.Google Scholar
  2. 2.
    Collins, S. A., Paduano, J. D., von Flotow, A. H., “Multi-axis vibration cancellation for Stirling cryocoolers,” Presented at Cryogenic Optical Systems and Instruments VI, April 4–5, Orlando.Google Scholar

Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • R. Glaser
    • 1
  • R. G. RossJr.
    • 1
  • D. L. Johnson
    • 1
  1. 1.Applied Mechanics Technologies Section, Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA

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