摘要
针对高超声速飞行器匹配/非匹配不确定性控制问题,建立了高超声速飞行器纵向运动三角标准型模型。引入非线性干扰观测器,结合反演控制解决非匹配不确定性控制问题的优势,设计了一种基于反演控制的飞行器多滑模控制器。该方法首先利用非线性干扰观测器的逼近特性对系统受到的干扰进行观测,在每一步反演设计中引入滑模控制设计反演多滑模控制器,从而实现系统对控制指令的输出跟踪。仿真结果表明该方法能够较准确地进行干扰观测,保证了系统的稳定性和鲁棒性,具有良好的控制性能。
For the matching and mismatched uncertainties control problem ofhypersonic vehicle,depending on nonlinear disturbance observer（ NDO）,a flight multi-sliding mode controller for the triangular standard form of longitudinal motion model isdesigned based on backstepping and sliding mode control scheme. The NDO is used to observe the disturbance of system. The sliding mode control is ledin each step of backstepping process for controller designing. Simulation results show that the NDO can observe the disturbance accurately,and the controller makes sure of the stability and robust of system.
出处
《现代防御技术》
北大核心
2015年第2期54-61,共8页
Modern Defence Technology
关键词
高超声速
非线性干扰观测器
不确定性
反演控制
滑模控制
hypersonic
nonlinear disturbance observer（NDO）
uncertainty
backstepping control
sliding model control
