Refrigeration cycle control apparatus

Details Refrigeration cycle control apparatus Refrigeration cycle control apparatus

1988-03-11

1990-01-16

Tanner, Harry B.

Refrigeration

Automatic control

Refrigeration producer

622285, 62229, 364151, F25B 4104

Patent

active

048934801

ABSTRACT:
A refrigeration cycle or an air conditioner including a refrigeration cycle is subjected to feedback control based on modern control theory. An apparatus controlling a controlled object, that is, the refrigeration cycle of the air conditioner including the refrigeration cycle, is formed as an optimal regulator. A controlled input to the controlled object includes a capacity of a compressor or a degree of opening of an expansion valve. A control output from the controlled object includes a temperature of air at a point downstream of the evaporator or a superheat of refrigerant. Feedback gains are predetermined by use of dynamic models constructed for respective steady operation states of the controlled object.

REFERENCES:
patent: 4395203 (1983-07-01), Takada
patent: 4494184 (1985-01-01), Crevel
patent: 4563734 (1986-01-01), Mori et al.
patent: 4607326 (1986-08-01), Mori et al.
patent: 4667480 (1987-05-01), Bessler
patent: 4674292 (1987-06-01), Ohya et al.
patent: 4686835 (1987-08-01), Alsenz
patent: 4696167 (1987-09-01), Matsui et al.
"Automotive Climate Control" by Tsutomu TABE et al., CONTROL SYSTEMS MAGAZINE, Oct. 1986, vol. 6, No. 5.

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