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Old 07-16-2006, 12:49 AM
Guanche Guanche is offline
Enthusiast
 
Real Name: Carlos
Hybrids: Camry '07
Posts: 2
Default Re: A note about the A/C

There's a way to program the "reference" temperature of the climate control in our camry hybrids. It says so in the technical manual.

The climate control in the CH seems to be a rather complex system as described in the tech manual:

"Neural Network Control

� In previous automatic air conditioning systems, the A/C ECU determined the required outlet air temperature and blower air volume in accordance with a calculation formula and based on information received from the sensors. However, because people’s senses are rather complex, a given temperature is sensed differently, depending on the environment in which the person is situated. For example, a given amount of solar radiation can feel comfortably warm in a cold climate, or extremely uncomfortable in a hot climate. Therefore, as a technique for effecting a higher level of control, a neural network is used in the automatic air conditioning system. With this technique, data that has been collected under varying environmental conditions is stored in the A/C ECU. The A/C ECU can then effect control to provide enhanced air conditioning comfort.

� The neural network control consists of neurons in the input layer, intermediate layer, and output layer. The input layer neurons process the input data of the outside temperature, the amount of sunlight, and the room temperature based on the outputs of the switches and sensors, and output them to the intermediate layer neurons. Based on this data, the intermediate layer neurons adjust the strength of the links among the neurons. The sum of these is then calculated by the output layer neurons in the form of the required outlet temperature, solar correction, target airflow volume, and outlet mode control volume. The A/C ECU controls the servo motors and blower motor in accordance with the control volumes that have been calculated by the neural network control."
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