SOLAR RADIATION SENSORLESS AIR CONDITIONER CONTROL SYSTEM

PROBLEM TO BE SOLVED: To provide a solar radiation sensorless air conditioner control system which enables a comfortable space environment in a cabin to be obtained by correcting the amount of heat increased through sunlight falling into the cabin when eliminating a solar radiation sensor. SOLUTION: In the A/CECU12 of the solar radiation sensorless air conditioner control system, a temperature difference calculation part 23 is provided which calculates the temperature difference ΔT between a temperature INC in the cabin measured with a temperature sensor 15 in the cabin when an ignition on signal is input and a target temperature Tptc' in the cabin. A correction value calculation part 24 carries out the calculation of the correction amount of the difference of a feeling temperature through solar radiation by estimating the temperature difference ΔT calculated with the temperature difference calculation part 23 as a solar radiation amount. In the A/CECU12, a PI control part 25 is provided where a proportional integral control delaying and reflecting the correction amount calculated by the correction value calculation part 24 from the temperature difference ΔT between the temperature INC in the cabin measured with the temperature sensor 15 in the cabin and the target temperature Tptc' in the cabin. COPYRIGHT: (C)2009,JPO&INPIT