具有非线性不确定性的高超声速飞行器的 分布式鲁棒反步跟踪控制
Robust backstepping decentralized tracking control for the hypersonic flight vehicle with nonlinear uncertainties

本文针对具有外部干扰, 参数摄动和非连续未知非线性气动影响的一般高超声速飞行器纵向动力学问题, 设计 了分布式鲁棒反步跟踪控制器. 为了处理复杂的系统, 将标准反步控制和信号补偿方法结合起来构成一个“简单”的鲁 棒控制器. 该方法不仅可以保证闭环系统半全局鲁棒跟踪性能, 也可保证系统跟踪误差以期望的收敛速度收敛到期望的 误差范围内. 最后, 带有非线性不确定性, 外部干扰和参数扰动的仿真系统说明了该方法的有效性.
In this paper, the design of robust backstepping decentralized tracking controller is addressed for the longitudinal dynamics of a generic hypersonic flight vehicle with external disturbances, parameter perturbations, and non-continuous unknown nonlinear aerodynamic influence. To deal with the complex system, the standard backstepping and signal compensation method are combined to construct a ‘simple’ robust controller. The proposed method can not only ensure the semi-global robust practical tracking property of the closed-loop system, but also guarantee the tracking error as small as desired with expected convergence rate. Simulation results with nonlinear uncertainties, external disturbances and parameter perturbations illustrate the effectiveness of the methodology.