摘要
针对无人作战飞机(UCAV)空中加油时存在加油机尾流干扰导致相对位置难以保持的问题,基于等效气动效应法建立了UCAV动力学模型,并设计了近距机动最优飞行控制律。将加油机尾流对UCAV的影响等效为平均风速度和风梯度,计算出附加于UCAV的诱导力系数和诱导力矩系数,建立了含尾流扰动的受油机模型。以位置跟踪误差的积分为增广状态,基于加权二次型性能指标设计了近距机动最优飞行控制律。仿真结果表明,UCAV模型能真实地体现尾流对受油机的影响,并通过设计的近距机动控制律可有效实现对加油机相对位置的精确跟踪。
Considering the difficulty to maintain the relative position of tanker in aerial refueling due to the interference of the tanker wake,a dynamic model for UCAV is set up and the optimal control law of closedistance maneuvering is designed on the basis of the equivalent aerodynamic effect method.The influence of the tanker wake is considered as the average wind speed and wind gradient,the induced force coefficient and induced moment coefficient acting on UCAV is calculated,a receiver aircraft model including wake disturbance is established.The optimal control of close-distance maneuvering is designed with the integral of position tracking errors in extended state and on the basis of weighting quadratic performance indexes.The simulation results show that the model can truly reflect the effect of tanker wake on the receiver and the accurate tracking of relative position can be realized via the close distance maneuvering control law.
出处
《飞行力学》
CSCD
北大核心
2013年第4期326-330,340,共6页
Flight Dynamics
关键词
自主空中加油
尾流建模
近距机动
最优控制
autonomous aerial refueling
wake modeling
close-distance maneuvering
optimal control
