大气扰动下无人机输出反馈控制律设计及仿真

Output Feedback Controller Design and Simulation for UAV Consider Atmospheric Disturbance

针对无人机在飞行过程中容易受到大气环境干扰的问题,干扰主要来自外部扰动,主要研究了大气紊流对无人机飞行过程的影响,建立了基于Dryden模型的纵向小扰动线性运动方程。为抑制大气紊流对无人机运动的干扰,保证飞行过程中飞机的稳定性,应用输出反馈H∞控制算法设计了干扰抑制控制器进行仿真。仿真结果表明,采用的控制方法能够有效的抑制大气紊流对无人机运动的干扰,使飞控系统具有良好的稳定性和鲁棒性。

UAV in flight is effeced by atmospheric disturbance;this paper studied atmospheric turbulence on the impact of UAV flight,longitudinal small perturbation linear motion equations are established based on Dryden turbulance model,in order to contain the interference of atmospheric turbulence on the UAV to ensure flight stability,the H∞ control theory is applied.Output feedback H∞ control algorithm is used in design and simulation.Results show that the control method used is effective on inhibiting the interference of atmospheric turbulence on UAV,so that the flight control system has good stability and robustness.