Computer-controlled automotive air conditioning system with fuzzy inference

A computer-controlled automotive air conditioning system comprising:

• an air conditioning unit which, when operated, produces a conditioned air fed to a passenger room of the vehicle;
• an outside temperature sensor issuing a first signal representative of the temperature of surrounding air of the vehicle;
• an inside temperature sensor issuing a second signal representative of the temperature of air in a passenger room of the vehicle;
• a temperature setter switch which issues a third signal for setting the temperature in the passenger room when manipulated;
• a solar radiation sensor issuing a fourth signal representative of the quantity of solar radiation pouring on the vehicle;
• an intake air temperature sensor issuing a fifth signal representative of the temperature of air flowing in said air conditioning unit;
• a computer-installed control unit for controlling operation of said air conditioning unit in accordance with said first, second, third, fourth and fifth signals;
• and
• means for operating said control unit under a fuzzy system theory so that the magnitude of at least one of said first, second, third, fourth and fifth signals is divided into a predetermined number of fuzzy labels of membership function to derive a parameter for the operation of said air conditioning unit.