The non-fragile robust H∞ controller design with system uncertainty

This paper presents a non-fragile robust Hcontroller design with system uncertainty. With the additive controller gain variations, the necessary and sufficient conditions for the existence of non-fragile state feedback controller are given and transformed to the LMI problems, which simplifies the solutions to get non-fragile robust H∞ state feedback controllers. The flight control simulation results show the reliability and validity of the method.