暖通空调系统的新型模糊自调节PID控制

Novel Fuzzy Self-tuning PID Controller for Control of HVAC Systems

针对暖通空调系统中由于存在高度非线性,外部扰动,多变量等因素而难以控制的现状,提出一种利用模糊控制器的解析表达式实时调节PID控制器各参数的新型模糊PID控制算法。闭环系统中的模糊模型在发挥控制作用的同时,作为调节器实现了对PID控制器各参数的在线自适应调节,并且给出了具体控制算法设计。仿真结果表明与传统PID控制器相比,这一新型模糊PID控制器具有超调量小,调节时间短,鲁棒性强等优良的控制性能。

In heating, ventilating and air-conditioning systems （HVAC）, there exist severe nonlinearity, time-varying nature, disturbances and uncertainty. A novel fuzzy PID controller is proposed and applied to the HVAC systems. The structure resolution expression of the function between input and output of fuzzy controller is used to tune the real-time parameters of the PID controller. The fuzzy PID controller takes the advantages of simple structure of PID controller sufficiently, and at same time the fuzzy model acts as a controller to tune PID con- troller on line. Then the concrete algorithm of the fuzzy PID controller is given. The simulation results demonstrate the validities of this novel fuzzy parameters self-tuning PID controller compared with the conventional PID controllers.