无人直升机前飞抗侧风控制技术

Research on Counteracting Crosswind Control Technologyof Unmanned Helicopter in Forward Flight

针对无人直升机在侧风环境中飞行时,因侧滑造成航迹控制精度下降,以及协调转弯时滚转角过大带来安全隐患等问题,分析了侧滑法和侧航法两种抗侧风控制策略。针对侧滑法的不足以及常规侧航法在无人直升机上应用的局限性,提出了基于侧向过载补偿的侧航抗侧风控制策略,设计了横航向的抗侧风控制律,并进行了数字仿真试验。仿真结果表明,设计的控制方法能够有效降低和消除侧滑,适用于无人直升机的抗侧风飞行控制。

When unmanned helicopter flying in a crosswind environment,problems of low trajectory control precision and risky coordinated turn with big roll angle will be caused by the side wind.In order to solve these problems,strategies to counteract crosswind based on fly with sideslip and fly without sideslip were analyzed.Considering the disadvantages of the first method and limitations of the second method,a new control strategy and control law to counteract crosswind based on lateral overload was designed.The digital simulation results showed that the control strategy and control law be designed could decrease and eliminate sideslip during the unmanned helicopter flying in the crosswind environment.