This paper improves a recent and fundamentally new design approach which can generally realize the robustness properties of the state feedback control for the first time, by guaranteeing the resulting feedback system stability, To the best of the authors＇ knowledge, this improved design also provides the first simple and systematic design procedure and design solution to the strong stabilization problem-stabilize feedback system by a stable output feedback compensator. Finally, high-performance high robustness, and low-controller order can all be systematically achieved by this design.