The direct force flight control systems based on the inversed dynamics and their stability analysis

As the maneuverability of the modern aircraft is increasing day after day, the nonlinear effect and coupling character of the flight dynamics becone a big problem to the flight control systems. The nonlinear decoupled control system is needed for the aircraft controlling. Based on the inversed system mothods, the direct force flight control system based on the inversed dynamics is designed. With the help of the active load control technology for the aerodynamic surface, the influence of the aerodynamic disturbance and model uncertainty can be rejected, and the modelling precision of the inversed system can be improved. The stability of the disturbed system is analized and the stabilizing condition is given. The simulation results proved that the new flight control system has a good performance in the decoupled flight attitude control and the decoupled flying path control mode, it also shows a good anti-interference ability and strong rubustness in the simulation.