| In our country Building energy consumption accounts for a large percentage of total energy,and still keeps high speed growing in every year.In the building the biggest energy consumption user is Air-conditioning system.For building energy saving and keeps air-conditioning system high efficiency operation,there are depend on air-conditioning automatic control.After both considering the issues of BAS hardware’s compatibility and development trend of field bus technology.This article supposes to design an intelligent Air-conditioning control network and use Lonworks Field bus for device data communication.For temperature and humidity control of air-conditioning,suppose using method of split range control,cascade control,virtual air parameter and fuzzy control.Because of air-conditioning system has phenomena of nonlinear,large postpone,complex characteristics.And also according as different control method of variable and constant air volume air-conditioning.The article’s specific research contents as follows:(1)According as air-conditioning function control requirement and Building automation control feature.design an intelligent Air-conditioning control system and base on Lonworks Field bus.This control system not only for air –conditioning system automatic control and also for all data management via networks.(2)Development of the control strategy and method for variable and constant air volume air-conditioning.Optimize the control of temperature and humidity both for energy saving and comfortable condition improvement.(3)Fuzzy control method be applied to temperature control of air-conditioning,according as temperature control feature.For verification of fuzzy control’s performance,Using matlab to simulate and analyze the control loop.After commissioning and trial testing,this intelligent control network and automation control system can achieving the expect requirement.And it is another new way to establish an intelligent building automation control system. |
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