变风量空调系统控制方法的探讨

INVESTIGATION OF CONTROL METHOD OF VAV AIR CONDITIONING SYSTEM

本文简介了VAV空调的原理和控制技术的历史,指出了VAV系统控制技术的重点和解决方案。结合自己的实验结果,比较了PID控制和DDC控制各自的优缺点,探讨了将二者结合后控制的效果,并指出通过混风压力控制新风量的缺陷。最后提出了进一步深入研究的方向。

This article simply introduces the principle of VAV and the history of VAVs control, pointing out the emphases of control and the solving scheme. Depending on our experiments, we compare the shortcomings and the merits of the PID and the DDC controls, discussing the result of the test with PID and DDC controls in combination, pointing out the deficiency of the method of fresh air volume control throughout controlling mix - air pressure. Finally, we show some probable direction of further research.