摘要
针对高超声速飞行器部分状态发生不可测量问题,将状态观测器和反步法设计相结合,提出基于扩展Luenberger标准观测器的控制器方法,将所设计的被观测系统在某平衡点处线性化,用Luenberger观测器理论设计观测器的增益值,得到渐近收敛于系统真实状态的状态观测值。应用反步控制技术,通过在反步法中引入指令滤波器,使得伪控制量的导数可以轻易获得,简化了设计。通过在六自由度模型上的仿真,表明所提方法可行、有效。
Aiming at the unmeasurable condition of hypersonic vehicle in some states, a controller based on extended Luenberger standard observer is developed integrating state observer and back-stepping method. The observed system is designed through linearization in a balance position, and the gains of the nonlinear observer are obtained using Luenberger observer theory, thereby getting the state observations that asymptotically converge to the real states. By introducing a command filter into the back-stepping control, the derivative of pseudo-control are easy to obtain, which greatly facilitates the control design. Finally, the results are verified by the simulation for a 6DOF hypersonic vehicle. The simulation also illustrates the feasibility and validity of the proposed approach.
出处
《导弹与航天运载技术》
北大核心
2014年第3期55-59,共5页
Missiles and Space Vehicles
