Two-zone fuzzy logic liquid level control

Details Two-zone fuzzy logic liquid level control Two-zone fuzzy logic liquid level control

2005-09-21

2009-11-24

Norman, Marc E (Department: 3744)

Refrigeration

Automatic control

Refrigeration producer

C062S222000

Reexamination Certificate

active

07621141

ABSTRACT:
A level control algorithm for an HVAC refrigeration system is provided. The control algorithm utilizes a fuzzy logic methodology to automatically adjust a flow of refrigerant in the system to maintain a desired liquid level in the condenser. The fuzzy logic methodology incorporates a plurality of fuzzy logic control algorithms each having different membership functions and other control parameters that can provide different degrees of level control in the condenser. A particular fuzzy logic control algorithm is selected based on the amount a measured liquid level in the condenser deviates from the desired liquid level in the condenser.

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