Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...
Patent
1992-06-03
1993-09-21
Wayner, William E.
Refrigeration
Gas compression, heat regeneration and expansion, e.g.,...
318561, 364165, F25B 900
Patent
active
052458300
ABSTRACT:
An adaptive control includes a digital error correction system (DECS) to reduce control system error to near zero by anticipating a problem and feeding forward in time a correction to deal with the problem before it happens. The adaptive control is used in a controlled system of the kind which is cyclical in operation and which operates in response to repetitive cycle commands so that the operation of the system is substantially predictable for a significant number of cycles of operation. The adaptive control is incorporated in a refrigerator system in which two Stirling cycle refrigerators are mounted in opposition to one another. The adaptive control permits accurate control of the command waveform frequency and shape, enables the refrigerator system to be more thermodynamically efficient, and enables the two refrigerators to exactly cancel each other's vibration.
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Aubrun Jean-Noel
Clappier Robert R.
Lorell Kenneth R.
Reshatoff Paul J.
Feix Donald C.
Lockheed Missiles & Space Company Inc.
Morrissey John J.
Volk H. Donald
Wayner William E.
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