软管式自主空中加油飞行控制系统与仿真研究

基于参考观测器的全状态反馈控制方法设计了受油机飞行控制系统,建立了软管式自主空中加油仿真系统,并进行了仿真验证。根据生成的受油机参考跟踪、对接轨迹,通过输出跟踪观测器在线估算前馈控制信号和参考状态量,设计全状态反馈控制器精确跟踪参考状态,解决了受油插头难以近距离跟踪加油锥套并实现精确对接的问题。以某型UCAV为例,设计了基于全状态反馈控制的自主空中加油仿真系统并进行了数字仿真。仿真结果表明,在四种强度阵风干扰下,设计的空中加油仿真系统能实现精确的双机加油设备跟踪与对接,具有良好的动态性能与鲁棒性能。

Design and Simulation of Probe and Drogue AAR Flight Control System

Reference observer-based full state feedback control method was used for designing the flight control system of the receiver aircraft in probe and drogue Auto-Air Refueling(AAR).An AAR simulation system was established for simulation verification.With the generated reference tracking and docking trajectory of receiver aircraft,an output tracking observer was designed to estimate forward-feed control signals and reference states to be tracked.Accordingly,a full state feedback controller was designed to provide accurate tracking with the assurance of accurate docking and the position keeping.As a result of that,the refueling drogue was able to achieve accurate tracking and docking with the refueling probe.Given as a certain type of UCAV,an autonomous aerial refueling simulation control system and its digital simulation were both designed based on full-state feedback control.Results of AAR simulation under four different wind turbulences show that the designed reference observer-based full state feedback controller is good at achieving accurate tracking,docking and position keeping during AAR,and the control system has good dynamics and robust characteristics.