공력계수 불확정성을 고려한 강인 비행제어 설계기법 연구

Abstract

This paper presents robust control synthesis technique for uncertain dynamical systems subject to structured parameter perturbations such as aerodynamic uncertainties in flight control. A new approach for incorporating parameter uncertainty into the robust H00 control design is explored in this paper. It is shown that the resulting time invariant H∞ controller stabilizes the uncertain system for a prescribed uncertainty bound. The proposed robust control technique is applied to the acceleration control of a canard-controlled missile under the presence of aerodynamic uncertainties. It is shown that the proposed parameter-robust H∞ control design technique outperforms the existing H∼°method and other LQG techniques in improving the robustness of the closed-loop system to aerodynamic variations.