无人机着舰纵向广义轨迹优化设计

Optimum design for generalized landing trajectory of carrier UAV

针对复杂气流干扰对无人机着舰的影响,对无人机着舰的纵向下滑轨迹进行研究。首先,针对常规控制结构的不足,提出一种基于直接力控制的无人机着舰纵向控制策略,进而引出无人机广义轨迹概念;然后,考虑各种约束条件,将无人机纵向广义轨迹设计转化为约束非线性规划问题,求解得到不同海面自然风速下的纵向广义轨迹,以及该广义轨迹与海面自然风速的函数关系。算例优化设计结果满足各种约束条件和优化目标,可以保证无人机在不同海面自然风速下都具有更大的扰流抑制能力。

For the influence of the sophisticated air-wake disturbance on UAV carrier landing,the longitudinal landing trajectory for UAV carrier landing was studied. Firstly,a longitudinal control strategy based on direct force control for UAV carrier landing was proposed on account of the shortcomings of the regular control strategy,and then the concept of generalized landing trajectory was drawn out. After that,considering constraint conditions,the generalized landing trajectory design was converted into a constrained nonlinear programming issue. Generalized landing trajectory was solved at different natural wind speeds,and the function relationship between the trajectory and the natural wind speeds was gained. Results of the example optimization design meet all constraint conditions and the optimization objective,ensuring that the carrier UAV could resist the larger disturbance at different natural wind.