Defrosting method and apparatus for refrigerator using GA-fuzzy theory

A defrosting method of a refrigerator using genetic algorithm (GA)-fuzzy theory comprising the steps of:

• acquiring experimentally predetermined redetermined reference learning data of temperature of an evaporator, humidity in a cold-storage room, and operation rate of a compressor during said defrosting period;
• storing said acquired reference learning data to a microcomputer;
• measuring the actual environment data of temperature of an evaporator, humidity in a cold-storage room, and operation rate of a compressor during said defrosting period;
• inputting said actual environment data to said microcomputer;
• inferring a frost-quantity on the evaporator from said acquired reference learning data and said inputted actual environment data by said microcomputer by using the GA-fuzzy theory;
• calculating a defrosting period from the inferred frost-quantity;
• and
• controlling a defrosting heater depending on said calculated defrosting period.