Multiobjective Complementary Control

Abstract

This article proposes a novel multiobjective control framework for linear time-invariant systems in which performance and robustness can be achieved in a complementary way instead of a tradeoff. In particular, a state-space solution is first established for a new stabilizing control structure consisting of two independently designed controllers coordinated with a Youla-type operator Q. It is then shown by performance analysis that these two independently designed controllers operate in a naturally complementary way for a tracking control system, due to the coordination function of Q driven by the residual signal of a Luenberger observer. Moreover, it is pointed out that Q could be further op..