Partager

Document IIF

Détection et régulation de la position du piston dans un compresseur linéaire en utilisant un serpentin de recherche.

Piston position sensing and control in a linear compressor using a search coil.

Auteurs : LIANG K., STONE R., DADD M., et al.

Type d'article : Article, Article de la RIF

Résumé

Linear compressors with clearance seals are well established for cryocoolers using either a Stirling cycle or pulse tube. However, both piston stroke and piston offset require detection and control in valved compressors. In order to manufacture linear compressor in large scale, then a simple, robust, and cheap control system is required with a minimum of sensors and actuators. This work introduces an approach to sensing the position of the piston using a search coil. The piston stroke is detected by calculating the peak-to-peak flux linkage in relation to the measured drive voltage and current. The piston offset is proportional to an integrated modulus of the back electromotive force (emf) of the search coil. Two PID (proportional-integral-derivative) controllers were developed to control the piston stroke by adjusting the drive voltage and a solenoid valve and bleed flow to control the piston offset. Experimental results validate the proposed compressor control technique.

Documents disponibles

Format PDF

Pages : 32-40

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Piston position sensing and control in a linear compressor using a search coil.
  • Identifiant de la fiche : 30017529
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 66
  • Date d'édition : 06/2016

Liens


Voir d'autres articles du même numéro (16)
Voir la source

Indexation