空気式流量制御系におけるむだ時間の影響について

概要

論文の詳細を見る
The length of pneumatic signal pipes bwtween the instrument panel room containing the pneumatic controller and the control valve is considered as an important influence factor in a pneumatic system of flow control. In this paper, the influence of the length of the pneumatic signal pipes upon the control behaviour and stability of a flow control system was studied experimentally. It was confirmed that the signal is transmitted through the pneumatic pipes with the velocity of sound, the time of transmission making dead time, With larger length of the pipes, the system becomes unstable with larger proportional band of the controller. Within the stable range, the period of cycling and the setting time become longer with larger length of the signal pipes. As a conclusion; it is advisable to make the length of the signal pipes as short as possible.
山梨大学の論文