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大展弦比无人机进场着陆过程中速度较低,对侧风十分敏感,是飞行过程中控制最复杂的阶段之一。通过分析侧风条件对样例无人机着陆过程的影响,提出了通过优化设计着陆轨迹线、控制空速以及完善纵横向控制策略的方法来改善侧风条件下大展弦比无人机自动着陆的控制品质。仿真结果表明,所设计的自动着陆轨迹线合理,控制策略完备,控制律品质良好,满足样例无人机在侧风条件下自动着陆控制的设计要求。
Large aspect ratio unmanned aerial vehicles entering the landing process lower speed, very sensitive to crosswind, is one of the most complex phase of flight control. By analyzing the influence of the crosswind conditions on the landing process of the prototype UAV, a method of improving the aspect ratio of the UAV under crosswind conditions is proposed by optimizing the design of the landing trajectory, controlling the airspeed and improving the vertical and horizontal control strategies Landing control quality. The simulation results show that the designed automatic landing trajectory is reasonable, the control strategy is complete and the quality of the control law is good, which meets the design requirements of the prototype UAV landing control under crosswind conditions.