Integrated Robust Dynamic Inversion Design of Missile Guidance and Control Based on Nonlinear Disturbance Observer

A robust dynamic inversion control law based on nonlinear disturbance observer is proposed for the integrated guidance and control of missile. Firstly the pitch channel of integrated guidance and control model was established. According to this model, a robust nonlinear integrated guidance and control law was designed by adopting dynamic inversion approach. Then, a nonlinear disturbance observer is employed to estimate the unknown compound disturbance and compensate them. Based on the Lyapunov stability theorem, we proved that all signals of the composite closed-loop are uniformly ultimately bounded. Finally, Simulation results demonstrate the effectiveness of the control scheme.