The use of RGA and condition number as robustness measures
S. Skogestad and K. Havre

Computers & Chemical Engineering
20, Supplement 2, pp S1005-S1010 (European Symposium on Computer Aided Process Engineering-6)

Abstract

The relative gain array (RGA) and condition number are commonly used tools in controllability analysis. In this paper we present new results that link these measures to control performance, measured in terms of the output sensitivity function with input and output uncertainty.