UCAV Waypoint Tracking Guidance Method based on Output Feedback Adaptive Theory

Unmanned combat aircraft (UCAV) has the characteristics of large flight envelope, strong channel coupling and high degree of uncertainty, so there are great challenges in the design of flight controller. In this paper, the six degree of freedom model of UCAV and uncertain disturbance are considered to study the control method of waypoint tracking guidance. Firstly, the UCAV command tracking control structure is designed. On this basis, the waypoint tracking control command generation method and controller command conversion method are proposed to generate the nonlinear waypoint tracking guidance command. Finally, the waypoint tracking guidance controller method based on output feedback adaptive robust theory is studied to complete the design of the underlying nonlinear control law The tracking guidance command is executed well. The simulation results of longitudinal tracking and lateral waypoint flight experiments show that the adaptive robust control method designed in this paper can achieve effective waypoint tracking guidance control, and has good control effectiveness.