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建立了临近空间飞行器无动力滑翔阶段的纵向运动模型,并应用动态逆方法推导了模型的逆系统。系统相对阶等于绕质心运动模型的系统阶数,实现了绕质心运动模型的线性化。为了克服纵向运动模型的隐动态和参数的不确定性,在内环动态逆控制器的基础上,设计了外环最优调节器。仿真结果表明:飞行器纵向逆控制系统可以准确跟踪俯仰角或攻角指令,并对参数不确定性和外界干扰具有较好的鲁棒性,具有工程适用性。
A longitudinal motion model near the gliding stage of the spacecraft is established, and the inverse system of the model is derived by using the dynamic inverse method. The relative order of the system is equal to the order of the system around the centroid motion model, which realizes the linearization around the centroid motion model. In order to overcome the implicit dynamics of the longitudinal motion model and the uncertainty of the parameters, the outer loop optimal regulator is designed based on the inner loop dynamic inverse controller. The simulation results show that the aircraft longitudinal inverse control system can accurately track pitch angle or angle of attack command, and has good robustness to parameter uncertainty and external disturbance, so it has engineering applicability.