Design by Optimizing a Vector Performance Index

Abstract

When applying the parameter space design method of the preceding chapter, regions of controller coefficients are first determined, guaranteeing simultaneous Γ-stability of a finite plant family. The design method of [111,110], which will be presented in this chapter, also searches for simultaneously stabilizing controller coefficients. However, in contrast to the parameter space method no stability boundaries in the space of controller coefficients are generated. Rather, the coefficients are determined by optimizing a vector performance index, the components of which rate different design specifications.