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首先分析了大型高空长航时太阳能无人机由于超大展弦比和高效多螺旋桨带来的航向阻尼增量和航向操纵导数,接着分析了由此带来的横航向动态特性变化,并结合多螺旋桨的操纵特性,提出了多桨航向控制方法,最后进行了仿真验证。结果表明,分布式多桨布局对提高该类无人机的横航向稳定性有较大作用,以多桨的转速变化量最小为目标的最优化航向控制分配方法对超长航时飞行很有利。
First of all, we analyze the increment of aerodynamic drag and heading control derivative due to the large aspect ratio and high efficiency multi-propeller in large-scale long-haul long-haul long-haul aircraft, then analyze the resulting changes in the dynamic characteristics of the transverse direction, Propeller control features, put forward a multi-blade heading control method, and finally carried out simulation. The results show that the distributed multi-blade layout plays an important role in improving the lateral stability of this type of UAV. The optimal method of heading control with the objective of minimizing the rotational speed variation of multi-blade is very beneficial to the long-range flight .