Abstract
Robust control of a closed-loop pressure control system is investigated in this paper. Dynamics of a pipeline which connects a control valve and an actuator affect the closed-100p system stability. A simple reduced-Order model of pipeline dynamics is preferable for control system design. Based on evaluation of modeling error of the reduced-order model by means of a finite-element model, an H∞ controller is designed. An experiment on closed-loop pressure control has been carried out, to investigate performance of the H∞ controller and to illustrate the importance of evaluating modeling error of pipeline dynamics.
