摘要
针对飞行控制系统设计中的大气扰动抑制问题进行了研究;讨论了Dryden紊流频域模型及时域对应的成形滤波器,建立了大气扰动下飞机纵向运动的小扰动方程;基于H∞控制理论,应用线性矩阵不等式(LMI)方法设计了鲁棒飞行控制系统;以某无人机纵向通道为例,选取全飞行包线内多个特征状态点,对设计的控制器进行仿真实验;仿真结果表明,所设计的控制器具有满意的干扰抑制能力和良好的鲁棒性及动态品质。
In the paper, disturbance attenuation in the design of the flight control system is discussed. The models in frequency domain of Dryden turbulence and their shaping filters are discussed, and the airplane model of longitudinal directional under the atmospheric turbulence is deducted. The linear matrix inequality （LMI） is applied to design a kind of robust flight control system on H∞ control theory. Focusing on the longitudinal channel of unmanned aerial vehicles （UAV）, some character states in the whole flight envelope are selected to validate the robust Hoo controller. The analysis shows that the controller could attenuate disturbance effectively and make the response of the system follow the expected trace and disturbance attenuated to the atmospheric turbulence.
出处
《计算机测量与控制》
CSCD
北大核心
2010年第3期591-593,共3页
Computer Measurement &Control
关键词
H∞控制
线性矩阵不等式(LMI)
大气扰动
干扰抑制
H∞ control
linear matrix inequality （LMI）
atmospheric turbulence
disturbance attenuation
