摘要
介绍了VAV空调系统的动态建模过程,建立了压力无关型VAV末端的动态子模型,该模型能真实反映末端由于风阀联接机械迟滞、电动机动作过程、执行器不灵敏区等所引发的动态特性。以具有两个独立控制区域的小型家用VAV空调系统为对象,利用所建立的系统仿真模型,对两种不同的送风机控制方法进行比较研究。认为在小型家用VAV空调系统中,应当采用具有较弱比例控制作用的PI控制方法对送风机进行控制,以保证系统整体控制的稳定性,实现室温控制效果。
Presents the development of a dynamic model, Establishes a sub-model of the pressureindependent VAV terminal. It can represent the dynamic behaviours caused by the hysteresis of damperactuator linkage, motor rotation action, actuator dead-band, etc, Comparatively studies two control methods for the supply fan, using the dynamic model for a residential VAV system with two conditioned spaces. The proportional-integral （PI） control method with weak proportional action is recommended for the supply fan of such a residential VAV air conditioning system, in order to keep system control stability and designed indoor temperature.
出处
《暖通空调》
北大核心
2005年第8期104-109,共6页
Heating Ventilating & Air Conditioning
基金
香港RGC(ResearchGrantsCouncil)基金资助项目(PolyU5020/01E)
