变风量空调系统的模糊PID控制策略仿真研究

针对变风量空调控制系统的时滞性、高度非线性、难于精确建立数学模型的特点和常规控制方法很难对其进行有效控制的问题,文章采用将模糊控制理论和经典的PID控制相结合的控制方案,对VAV空调系统的末端风阀开度进行控制,并在设定的温度条件和一定的扰动工况下利用MATLAB的simulink模块对PID控制、模糊控制、模糊PID控制3种控制策略进行了仿真实验。仿真结果证明,模糊PID控制具有响应时间快,控制精度高,很强的抗干扰能力。因此,模糊PID控制策略在VAV空调系统中的应用是可行的。

Simulation Study for Fuzzy PID Control Strategy of VAV Air-conditioning System

In view of the time-delay,the non-linearity,difficulty with precise mathematical model,the conventional control method is highly difficult to carry on the control to VAV system effectively,this paper proposed a fuzzy PID control technology to the opening of the valve of the VAV system.And has carried on the simulation experiment with the MATLAB simulink module under the set temperature conditions and a certain degree of disturbance environment for the three control program.The simulation result proved that,the fuzzy PID system shows a fast response time and a high accuracy and a strong anti-disturbance capability.The fuzzy control theory in the VAV air-conditioning system is feasible obviously.