关键词: 飞翼布局, 精确着舰, 直接力控制, 魔毯, 增量动态逆, 控制分配

Abstract: The unique advantages of the flying-wing aircraft make it one of the future directions for advanced fighter development. Facing the nonlinearity, redundancy and coupling of control surfaces, and interference from ship wakes in the landing control process of flying-wing aircraft with novel rudder configurations, this paper establishes a six-degree-of-freedom nonlinear mathematical model of tailless aircraft with multiple control surfaces. A direct force control law based on the Incremental Nonlinear Dynamic Inversion (INDI) control framework is proposed: t the nonlinear incremental dynamic inversion method designs direct force trajectory control laws, attitude angle control laws, and speed maintenance control laws. Additionally, a Fixed-Time Disturbance Observer (FTDO) is designed to estimate and compensate for the coupling between the direct force control loop and the attitude control loop, achieving dynamic decoupling between the two loops. Considering various control surface characteristics and the execution capability of thrust vectoring, an integrated direct force control method combining aerodynamic control surfaces and thrust vectoring is designed. The nonlinear control allocation problem is transformed into an incremental linear control allocation problem using the aerodynamic coefficient Jacobian matrix, allowing for rapid online calculation of actual control surface deflection increments. Simulation verifica-tion shows that introducing direct force control based on incremental nonlinear dynamic inversion into the landing control law of flying-wing carrier-based aircraft can enhance the ability of such aircraft to quickly correct trajectories and sup-press airwake, ultimately significantly improving the precision of aircraft landing and providing a solution for the deployment of flying-wing carrier-based aircraft.

Key words: flying-wing, precision carrier landing, direct force control, MAGIC CARPET, incremental dynamic inversion, control allocation