无人机空中加油自主会合制导律研究

Design of UAV autonomous guidance law for rendezvous in aerial refueling

针对现有一类自主会合制导律设计复杂、鲁棒性差的问题进行了改善研究。通过对无人机空中加油自主会合问题的理论研究，提出了一种统一的纵、航向制导律形式，克服了现有一类制导律纵、航向制导律形式不同造成设计复杂的缺点，从而简化了制导律设计。另外，引入相对距离闭环控制，解决了现有一类制导律采用相对距离开环控制导致制导律鲁棒性差的问题。最后，以匀速直线运动的加油机为例，采用设计的制导律进行了空中加油自主会合数字仿真，结果表明，所设计的自主会合制导律能有效实现无人机空中加油自主会合，解决了现有一类自主会合制导律设计复杂、鲁棒性差的问题。

Aiming at the problem that a kind of existing autonomous guidance law for rendezvous is complex design and bad performance of robust, the improving research is carried out. With the theory research of UAV autonomous guidance law for rendezvous in aerial refueling, uniform guidance law of pitch and yaw channel is given to overcome the disadvantage of com- plex design caused by different guidance law of pitch and yaw channel. And closed - loop relative distance control is used to resolve the problem caused by open - loop relative distance control. Finally, the guidance law given in the article is proved to be reasonable with a simulation example of air - tanker with constant speed and direction. And it is proved with the simulation result that the problem of complex design and bad performance of robust for a kind of existing autonomous guidance law is resolved.