Title:
ファジイ論理液体レベル制御装置
Document Type and Number:
Japanese Patent JP3806148
Kind Code:
B2
Abstract:
Chiller operating efficiency is optimized by controlling the system to maintain the condenser liquid refrigerant level at a value which will minimize or prevent gas bypass to the evaporator. This is accomplished by sensing the level of liquid refrigerant in the condensor and incorporating fuzzy logic to properly position a multi-position valve which can variably restrict the flow of this liquid into the evaporator, according to this sensed parameter. The fuzzy logic utilizes as inputs both the level error from a set point level and the rate of change of the sensed level. Each of these inputs are combined by fuzzy logic techniques to provide the required output signal to control the opening and closing of the valve.
Inventors:
Beaverson, Gregory Kay
Horres, craig pee
Westinsky, Russell Pea
Horres, craig pee
Westinsky, Russell Pea
Application Number:
JP53722997A
Publication Date:
August 09, 2006
Filing Date:
April 11, 1997
Export Citation:
Assignee:
YORK INTERNATIONAL CORPORATION
International Classes:
F24F11/02; F25B1/00; F25B41/04; F25B41/06; G01F23/00; G01F23/26; G05B13/02; G05D9/02; G05D9/12
Domestic Patent References:
| JP58078069A | ||||
| JP61029663A | ||||
| JP61029663U |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Fumitoshi Nishiyama
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Fumitoshi Nishiyama