High-precision Trajectory Tracking Control for Uncertain Nonminimum Phase Hypersonic Vehicles

Hypersonic vehicle (HSV) is one of the cutting-edge technologies in the research area of aerospace and is also an intensively focused strategic direction for global military powers. Precise prompt global strike as the ultimate skill of HSV, the key relies on high-precision trajectory tracking control. Due to the lack of experimental data, the accurate model of an HSV is very difficult to obtain. Besides, the HSV model exhibits nonminimum phase property. These features make it extremely difficult to achieve high-precision trajectory tracking control for an HSV, which has become a bottleneck for the development of the HSV control system. To this end, this paper focuses on high-precision trajectory tracking control for a nonminimum phase HSV, with special emphasis on the existence of model uncertainties. The proposed control framework consists of three parts. Firstly, design of a minimum-phase new output based on virtual constraints and robust optimization. Secondly, calculation of the ideal internal dynamics based on experience replay and optimal bounded inversion. Thirdly, robust nonlinear controller design based on receding horizon. By the end of this research, a control framework is built for high-precision trajectory tracking for nonminimum phase HSVs, which can provide scientific theory and support for the sustainable development of the HSV control technology.