CAJ | 학술논문

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。
침대흡기식고초성속비행기기동／추진／결구탄성우합공제문제，제출료로봉반연공제기설계방법。채용반연화동태역방법설계허의공제량화실제공제량，통과인입일계저통려파기래획취허의공제량적도수，해결료허의공제량구도복잡문제；위료증강공제기적로봉성，채용충분광활투영산자대모형비필배불학정항진행고계화보상，동시피면료가능출현적삼수표이문제。방진결과표명，해공제기대모형기동삼수의합오차、공각화승강타편각섭동、기동탄성영향구유로봉성，대속도지령화고도지령구유흔호적근종효과。
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.