摘要
提出了一种基于L1自适应的超机动飞行控制律设计方法;该方法将局部飞行包线内飞机模型参数的变化视为模型不确定性,将纵向与横、航向三轴间的交联耦合处理为外部干扰,通过L1自适应调整律与控制律,使系统跟踪误差快速渐进收敛于零,并确保系统鲁棒性,从而仅需一套L1自适应控制律即可实现局部包线范围内的大迎角超机动飞行控制,减少了控制律设计的工作量;针对自适应控制引起的高增益问题,采用低通滤波器消除控制信号中不期望的高频动态,对高频振荡进行有效抑制;超机动仿真结果表明:所设计的控制律具有良好的大迎角超机动飞行控制性能。
A super maneuver flight control law design method based on L1 adaptive control is proposed in this paper. In local flight re- gion, the changing of the model parameters are treated as the model uncertainty and coupling is treated as disturbance. The L1 adaptation law and control law are designed to guarantee the convergence and robust. For high gain question caused by adaptive control, low- pass filter is used to climinate the high frequency control signal and restrain the high frequency oscillation. In local flight area, only one controller realizes the super maneuver flight control. The simulation is done with a 6 - DOF nonlinear aircraft model which has high AOA dynamic character. The simulation results show that the super maneuver flight controller has eood high AOA control performance.
出处
《计算机测量与控制》
北大核心
2013年第12期3281-3283,3286,共4页
Computer Measurement &Control
基金
航空科学基金(20125818019)
