摘要
变风量空调系统以其节能、灵活性而优于其他空调系统,逐渐成为空调系统设计的主流。但变风量空调系统是一个复杂、时变的非线性热力系统,建立精确的数学模型比较困难。本文探讨了一种基于直接数字控制器的复合模糊PID控制算法,在大偏差时用模糊控制,在小偏差时用PID控制,从而解决控制系统的稳定性与获得良好性能的问题,增强系统对不确定因素的适应性。
Variable air volume（VAV）air-conditioning system is superior to the other airconditioning systems for its economic and flexible performance, which has been the main current of air-conditioning system design. But as a complex thermodynamic system, the math model can not be easily got. This paper discusses a compound Fuzzy-PID control algorithm based on the direct digital control （DDC） which uses fuzzy control in big error and PID control in small error. So it can solve the contraction between stability and good performance of the system, and strengthen the adaptability to some unstable factors.
出处
《制冷与空调》
2007年第6期17-21,共5页
Refrigeration and Air-Conditioning
关键词
变风量空调系统
直接数字控制
PID控制
模糊控制
复合模糊PID控制
variable air volume air-conditioning system
direct digital control
PID con-trol
fuzzy-control
compound fuzzy-PlD control
