Evaluation of Design Methods for Geometric Control

Geometric control can produce desirable control by decoupling the input disturbances from the selected output variables. The basic principle for this method was originally introduced by Wonham. The mathematical complexity involved, however, makes the method very hard to get accepted by the chemical community. The paper evaluates Wonham´s original method together with three other methods, i.e. eigenvalue/eigenvector methods by Shah et al, the graph theory by Schizas and Evans and the simplified method by K??mmel et al. The evaluation considers the basic potential of the methods, the prerequisite of the designer, transparency, computer demand, and potential for pole shift.