基于VAV变风量智能建筑空调系统控制

为了解决传统VAV空调系统的非线性、延时性、波动性以及模型准确性等问题,在传统PID控制系统的基础上,引入模糊PID控制机理,建立了模糊增益控制器.结合自适应调节系统,通过模糊调整方法,以变风量空调系统终端阀门的开度为最终控制对象,通过MATLAB编程建立模型,对PID控制器参数进行在线调整.结果表明,引入模糊PID控制方法的VAV空调系统与传统PID控制方法相比,前者动态响应速度快,校正时间短、超调量小,具有广阔的应用前景.

Air-onditioning system control of intelligent building based on VAV variable air volume

In order to solve such problems as the nonlinearity, delay, fluctuation and model accuracy of traditional variable air volume(VAV)air conditioning system, the fuzzy PID control mechanism was introduced and the fuzzy gain controller was established based on the traditional PID control system. In combination with the adaptive adjustment system and through the fuzzy adjustment method, the opening degree of terminal valve of VAV air conditioning system was chosen as the final control object, and the model was established through the MATLAB programming to perform the on-line adjustment of parameters for the PID controller. The results show that compared with the traditional PID control method, the VAV air conditioning system with fuzzy PID control method has the advantages of fast dynamic response speed, short correction time and small overshoot, and has a very wide application prospect.