电光与控制, 2016, 23(11): 13, 网络出版: 2016-11-01

无人直升机前飞段抗侧风的控制技术研究

A Scheme of Crosswind Resisting for Unmanned Helicopters in Forward Flight Phase
作者单位

南京航空航天大学自动化学院,南京 210016

摘要
前飞段飞行能力是无人直升机进行超视距飞行的基础, 而侧风是影响无人直升机前飞段飞行安全的一个重要因素, 因此前飞段的抗侧风策略制约着无人直升机的超视距飞行能力。目前, 无人机主流的两种前飞抗侧风策略是侧滑法和侧航法。侧滑法是通过飞机的滚转来抵抗侧风对飞机产生的侧力, 飞行中一直存在侧滑角; 侧航法则是将航向偏转至空速方向来消除侧风产生的侧滑, 实现无侧滑的飞行。从这两种方案着手, 设计了4种前飞段抗侧风方案, 并进行了对比分析, 来分别满足不同的工程需求。
Abstract
The flight ability in the forward flight phase is the basis of the over-the-horizon flight of unmanned helicopter, and crosswind is the most important factor affecting the helicopter safety in forward flight phase.Therefore, the strategy of resisting lateral wind in the forward flight phase restricts the ability of the over-the-horizon flight of unmanned helicopter.At present, the main strategies of UAVs are the side-slipping method and the crabbed method.Side-slipping method resists the lateral force on the plane by crosswind through plane rolling.Using this method the unmanned helicopter flies with the sideslip.Crabbed method eliminates the sideslip through turning the heading to airspeed direction.The unmanned helicopter flies without the sideslip with this method.Four schemes are designed for crosswind resisting according to the two strategies, and comparison and analysis are carried out for meeting different engineering requirements respectively.
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