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Un nouveau système de suppression des vibrations générées par un cryorefroidisseur mécanique.

A novel vibration suppression system for mechanical cryocooler.

Auteurs : YANG B. Y., WU Y. N., TANG Y. J., et al.

Résumé

Vibration generated by mechanical cryocoolers has been identified as a critical issue for space infrared application. A novel vibration suppression system based on momentum cancellation has been developed. The cryocooler expander module consists of a displacer and an electro-magnetically driven actuator, which are mechanically placed in a back-to-back configuration. The transfer function of actuator has been solved, based on that result, novel analogue control electronics has been designed to regulate the displacer displacement signal and drive the actuator, so actuator and displacer can move in opposite direction to reduce the vibration force. With this system, the fundamental vibration is reduced by a factor of more than 40 dB; the power consumption is only less than 0.5 W without control electronics. The system has been successfully applied to the authors' cryocooler and infrared instruments.

Détails

  • Titre original : A novel vibration suppression system for mechanical cryocooler.
  • Identifiant de la fiche : 2008-1981
  • Langues : Anglais
  • Source : Cryogenics and refrigeration. Proceedings of ICCR'2008.
  • Date d'édition : 05/04/2008

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