ROBUST AND FEL CONTROL DESIGN FOR MIMO FLOW-LEVEL CONTROL PLANT

In this paper, two strategies are employed in order to control of a MIMO Flow-Level pilot plant. Almost all practical matters such as actuator limitations and stability problems are considered during the design procedure and it is the worthy fact of these designs. Since the open loop plant is unstable, the stabilization is done by using an inner loop. Then the stabilized plant is identified at different operating points. An NMP nominal model with time delay in the MIMO system shows the complexity in controller design. Two H∞ robust controllers based on the knowledge of the disturbance are derived. Then to relax some design criteria in H∞ robust controller and to achieve a simpler and more effective way in MIMO robust design we propose a combination of feedback error learning and robust controller.