About a differential equation characterizing gas volume control

Authors:
H. D. Wacker;J. Boercsoek
Affiliations:
HIMA Paul Hildebrandt GmbH + Co KG, Germany;HIMA Paul Hildebrandt GmbH + Co KG, Germany
Venue:
ROCOM'08 Proceedings of the 8th WSEAS International Conference on Robotics, Control and Manufacturing Technology
Year:
2008

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Abstract

Firstly the authors explain the nature of contracts between primary suppliers of gas and local suppliers. They then describe and investigate an effect observed frequently in the field of gas volume and flow control. Instead of running a straight line, the volume controller opens or closes the control valve dramatically at the end of the accounting period. The effect is explained by introducing an easy differential equation to describe the issue and solving it. The reason causing the phenomenon turns out to be a deviation of the measured value of the gas flow rate from the actual value. Rounding errors occurring during necessary calculations may lead to the same effect.