吸气式高超声速飞行器鲁棒反演控制器设计  

Robust backstepping controller design for air-breathing hypersonic vehicles

作　　者：卜祥伟[1] 吴晓燕[1] 陈永兴[1] 白瑞阳 

机构地区：[1]空军工程大学防空反导学院,西安710051

出　　处：《固体火箭技术》2014年第6期743-748,共6页Journal of Solid Rocket Technology

基　　金：陕西省自然科学基础研究计划资助项目(2012JM8020)

摘　　要：针对吸气式高超声速飞行器气动/推进/结构弹性耦合控制问题,提出了鲁棒反演控制器设计方法。采用反演和动态逆方法设计虚拟控制量和实际控制量,通过引入一阶低通滤波器来获取虚拟控制量的导数,解决了虚拟控制量求导复杂问题;为了增强控制器的鲁棒性,采用充分光滑投影算子对模型非匹配不确定项进行估计和补偿,同时避免了可能出现的参数漂移问题。仿真结果表明,该控制器对模型气动参数拟合误差、攻角和升降舵偏角摄动、气动弹性影响具有鲁棒性,对速度指令和高度指令具有很好的跟踪效果。A robust backstepping controller was designed for air-breathing hypersonic vehicles with aerodynamics, propulsion and structural flexible dynamics couplings.Virtual and actual control items were designed based on backstepping and dynamic inver-sion design procedure.To omit analytic calculation of the virtual control item derivatives,which was very difficult to evaluate in the traditional backstepping control,low-pass first order filter was introduced.In order to enhance robustness of the controller,a suffi-ciently smooth projection operator was employed to estimate and compensate the model unmatched uncertainties,thus avoiding possi-ble parameters drift.Simulation results show that the designed controller is robust to model aerodynamics fitting errors,angle of attack and elevator perturbation and the influence of aeroelasticity,and achieves an excellent tracking performance of velocity and altitude trajectories.

关 键 词：吸气式高超声速飞行器 鲁棒反演控制 一阶低通滤波器 充分光滑投影算子 

分 类 号：V448[航空宇航科学与技术—飞行器设计]