Robust dynamic inversion control for near space vehicle

To the highly nonlinear, significant input-output coupling and remarkable external disturbance of near space vehicle (NSV), a dynamic inversion control method based on H_∞ optimal control is proposed. This method combines the robustness of H_∞ optimal control theory and nonlinear decoupled control ability of the dynamic inversion control well, so it is possible to achieve highly nonlinear decoupled control for NSV, restrain the effects of external disturbance and realize finite time stability in complicated flight conditions. Therefore, the proposed can provide the longitudinal stability and improves longitudinal flight quality for NSV. Simulation studies demonstrate that the proposed control method is efficient.