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Monday, November 1, 2010

Car Auto Air Conditioning Control System

With the improvement of living standards among people, in cars in people's lives play an important role. The automobile air conditioning a vehicle using one measure of comfort, requiring higher and higher. For a long time, China's car air conditioning low level of automation, most of the state is in manual or semi-automatic and manual control on the one hand there will be room temperature of less than car comfort, energy efficiency requirements; the other hand, easily distracted, is not conducive to security. To achieve automotive air conditioning automatic control is the inevitable trend. Senior foreign cars are generally equipped with automatic air-conditioning system, according to the state parameters of the car to automatically adjust the interior temperature. Most luxury cars and domestic air conditioning controllers are dependent on imports, has not yet developed their own car air-conditioning with independent intellectual property rights of automatic controller. Aiming to achieve automatic control of vehicle air conditioning problems are a series of studies. Fuzzy control theory of automobile air-conditioned car interior temperature control system for intelligent control. Fuzzy control method is robust and can more precisely control the temperature inside the vehicle, to meet human comfort requirements. Based on the car air conditioning unit during the analysis of indoor temperature regulation, according to the decomposition of fuzzy control rule base principle of the whole controller into multiple multi-input single-output fuzzy controller. The input signal (the set temperature and the vehicle room temperature) for fuzzy processing, fuzzy control rules were established. According to the input, output requirements for air conditioning controller hardware design, hardware circuit STC12C5A16AD microcontroller core microprocessors, software, part of the assembler language using the Keil uVision2 development environment complete. 

Key words: automobile air conditioning, fuzzy control, temperature control

 

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