自主空中加油会合过程中飞行制导律设计

Flight guidance law design in process of rendezvous for autonomous aerial refueling

针对目前自主空中加油亟需解决的会合问题,采用带有末端角约束的比例导引方法,实现了受油机导引进入加油区域,加油机采用非线性制导算法跟踪赛马场跑道线飞行,并给出了有风条件下非线性制导算法可能失效的解决办法。引入虚拟目标和虚拟加油机的概念,保持受油机和加油机在会合上的时间同步,设计了相应的速度控制器。利用Matlab/Simulink搭建仿真平台对空中加油会合制导律进行了仿真验证,仿真结果表明设计的制导律能满足自主空中加油的会合要求。

Aiming at the problem of rendezvous for autonomous aerial refueling which is a major issue to be solved current-ly,a method of proportional navigation with terminal angular constraint is used to guide the receiver to flight into refueling dis-trict. The nonlinear guidance algorithm is adopted for the tanker to guide the tanker to flight on the racetrack. A solution to over-cove the nonlinear guidance algorithm failure caused by wind is presented. The concepts of virtual target and virtual tanker is in-troduced to maintain the time synchronize of the receiver and the tanker in rendezvous. A corresponding velocity controller was designed. The simulation platform was built with Matlab/Simulink to verify the rendezvous guidance law for autonomous aerial re-fueling. The simulation results show that the guidance law can satisfy the requirement of rendezvous for autonomous aerial re-fueling.