论文部分内容阅读
飞机运动为非线性形式且扰动有可能极大,在变化较大飞行范围内使用常规飞控系统控制这种对象会产生误差.阐述一种逐点线性化后退区间优化控制(RHO)算法,有效解决小迎角范围内飞机仿射非线性运动控制问题.首先根据飞机仿射非线性运动方程特点,提出采用逐点线性化方法,在采样点上将仿射非线性方程变为时变线性方程,以此为控制对象提出RHO控制概念,并进一步推导出两个微分Riccati(DRE)方程,分析了DRE的解法,从而计算出在线控制指令.最后结合国内某型号飞机气动数据对此算法进行了仿真,证实算法的可行性和实时性.
Aircraft movements are non-linear and its perturbation may be very great, and it will produce errors when using conventional flight control system to control this kind of object in a wide range of flight. A point-by-point linearized backoff interval optimization control (RHO) The problem of affine nonlinear motion control in the plane of small angle of attack is solved.At first, according to the characteristics of aircraft affine nonlinear motion equation, a point-by-point linearization method is proposed to change the affine nonlinear equation into a time-varying linear equation , The RHO control concept is proposed for the control object, and two differential Riccati (DRE) equations are further deduced, the solution of DRE is analyzed to calculate the online control instructions.At last, the algorithm is carried out based on the aerodynamic data of a certain type of aircraft in China Simulation shows that the algorithm is feasible and real-time.