Linear drive motor control in a cryogenic refrigerator

Details Linear drive motor control in a cryogenic refrigerator Linear drive motor control in a cryogenic refrigerator

1985-11-19

1987-05-12

Wayner, William E.

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

60518, 318617, 324177, 417 45, F25B 900, F01B 2910

Patent

active

046646850

ABSTRACT:
In a Stirling cryogenic refrigerator, the movement of the displacer is monitored by sensing the back EMF in the displacer drive coil throughout displacer stroke. The back EMF signal is applied through a feedback circuit to control the phase relationship of displacer movement with a reference signal related to the pressure wave.

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