Strong Diagonal Dominance by Quantitative Feedback Theory

This paper uses strong diagonal dominance theory to obtain a systematic solution to the MIMO-QFT problem by an n times solution of the SISO-QFT sensitivity constraint problem. This is analogous to the current MIMO-QFT formulation that requires an n times solution for the elements of the closed-loop transfer matrix. Of equal but independent interest is the establishment of the first early verifiable existence and uniqueness conditions for robust diagonal stabilizability.