Abstract
LIQUEFIED NATURAL GAS TANK PRESSURE CONTROL USING PID, PD-PI, PI-PD AND 2DOF CONTROLLERS
Prof. Galal Ali Hassaan*
ABSTRACT
The control of the pressure of liquefied natural gas (LNG) is importantfor safe operation and transportation. The paper presents the control ofLNG pressure in a storage tank using four controllers: PID, PD-PI, PIPDand 2DOF. A proper tuning technique is selected to tune thecontrollers using a proper performance index. The step time responseof the control system using the four proposed controllers is presentedand the time-based characteristics are compared. The comparisonreveals the best controller among the four controllers depending on agraphical and quantitative comparison study.
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