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针对飞机操纵面故障及传统的模型参考自适应方法动态性能欠佳的问题,提出了一种基于L1自适应控制理论的飞翼无人机横侧向滚转角重构控制方法;该方法将操纵面故障引起的模型参数的变化视为模型不确定性,将三轴间的交联耦合处理为外部干扰;通过选择合适的自适应律和低通滤波器,使L1自适应重构控制器同时满足快速自适应性和鲁棒性;针对操纵面发生漂浮、完全损失及卡死等故障进行了仿真。仿真结果表明:控制器可使跟踪误差快速收敛且动态性能良好,所提出的重构方法可用于操纵面故障的重构控制。
Aiming at the problem of poor controllability of aircraft control plane faults and the traditional model reference adaptive method, a control method based on L1 adaptive control theory is proposed for lateral roll angle reconfiguration of flying wing UAV. The change of model parameters caused by surface failure is considered as the model uncertainty, and the cross-coupling between three axes is treated as external disturbance. By choosing appropriate adaptive law and low-pass filter, L1 adaptive reconfiguration controller It meets fast adaptability and robustness. It simulates the floating, complete loss and jamming of control surfaces. The simulation results show that the controller can make the tracking error converge rapidly and the dynamic performance is good. The proposed reconstruction method can be used to reconstruct the control surface fault.