Linear motor controller

F - Mech Eng,Light,Heat,Weapons – 04 – B

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Details

F04B 17/04 (2006.01) F04B 31/00 (2006.01) F04B 35/04 (2006.01) H02K 33/00 (2006.01)

Patent

CA 2466304

A free piston gas compressor comprising a cylinder (9), a piston (11) reciprocable within the cylinder (9) and a reciprocating linear electric motor derivably coupled to the piston having at least one excitation winding (1, 2). A measure of the reciprocation time of the piston (11) is obtained, any change in the reciprocation time is detected and the power input to said excitation winding (1, 2) is adjusted in response to any detected change in reciprocation time.

L'invention concerne un compresseur de gaz à piston libre comprenant un cylindre (9), un piston (11) pouvant effectuer un mouvement alternatif à l'intérieur du cylindre (9), et un moteur électrique linéaire à mouvement alternatif, couplé par entraînement au piston, ce moteur comprenant au moins un bobinage d'excitation (1, 2). Le dispositif selon l'invention permet d'obtenir une mesure de la durée du mouvement alternatif du piston (11), de détecter les changements survenant dans la durée de ce mouvement alternatif et d'ajuster l'entrée de puissance dans ledit bobinage d'excitation (1, 2), en réponse aux changements détectés dans la durée du mouvement alternatif.

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