Publication Details
Abstract
A heat exchanger system is considered and the robust control of a model representing this system is studied based on robust control theory. Nonlinearity The nonlinearity makes it not easy to control the system based on a linear controller design and is also influenced by the disturbances as well as parameter variations during operation. Thus a versatile controller is needed in order to provide a good performance for all conditions. The idea behind the strong control design, i.e., H-infinity synthesis is to solve a programmed weight as if the closed-loop system were written as an operator from external input disturbances map to output signal quality. Thus, the objective of the controller design is to minimize the effects of disturbances on the performance outputs. Nominal system performance, robustness, stability and controller performance results are shown.