The Design Of Monitoring System And The Research Of Control Arithmetic For Solar-Heating Fresh Air Based On The CAN-Bus

According to the actual project-SOLAR-HEATING FRESH AIR CONDITIONING SYSTEM which cooperated with BUT, this paper designed the hardware platform of monitoring system based on the CAN-bus, and discussed the study and application of a kind of fuzzy adaption controller in solar accumulated heater in this platform.In this paper the background of the subject and the research of the theoretics is discussed firstly, and then introduced the design scheme of the monitoring system according to the actual project. After analysing the system structure and working mode of the Solar-heating Fresh Air System, the paper introduced the design process in detail, including requirement analysis, choice of kernel processor, sensors, executor and CAN-bus equipments, the detailed design of hardware system.In this paper, in order to achieve the intelligent control of water's temperature of aolar accumulated heater ,we combine the advantages of fuzzy neural network controller to control the electric heater of SAH, and realized the water temperature adjusted automatically.Adaptive fuzzy control is a research filed, which is composed theory of fuzzy control and adaptive control .Adaptive fuzzy control has recently attracted increasing attention from control circle, because the system of adaptive fuzzy control can not only improve system performance by modifying own rules but also has quick convergence speed an robust. The combination of fuzzy control and neural networks can make it possible that the membership function and the fuzzy rules can be converted into the fuzzy neural networks. Then the dispersed knowledge system is formed by adjusting the weight of the neural networks continuously, the membership function are more accurate.The simulation of solar accumulated heater system is carried out and compared with the conventional fuzzy control algorithm. The result showed that the fuzzy adaptive controller has many advantages, such as the speed of inference is faster, the capability of tracing is better and the steady-error is smaller.