摘要
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。
This paper analyzed additional derivatives of the yaw damping and control resulted from multi-propeller and large aspect-ratio wing for the high altitude long endurance（HALE） solar powered UAV,and then carried out further researches on the difference between LAT-DIR dynamic properties,then,an optimal yaw control allocation method for the purpose of minimizing the total rotate speed of multi-propeller was proposed and validated by simulation.The results show that the large aspect-ratio wing integrated with multiple propellers can improve its LAT-DIR stabilities significantly,and the proposed optimal yaw control allocation method is very favorable for long endurance flight.
出处
《飞行力学》
CSCD
北大核心
2012年第1期5-8,共4页
Flight Dynamics
基金
国防基础科研基金资助(A2720060290)
中国博士后科学基金资助(20100471637)
