Abstract
In this article, the disturbance observer–based control is designed for a flexible hypersonic flight vehicle with the external disturbance. The aircraft structure is easy to cause elastic vibration, thus leading to serious change in structural configuration or even disintegration. Therefore, the impact of elasticity modal for altitude subsystem is described as a system disturbance, and then, the equivalent model is established. On this basis, considering the model structure and composition of nonlinear systems, the disturbance observer is used to eliminate the information of the disturbance. Finally, the simulation results make an offer to show that the disturbance observer–based control can provide a good tracking performance.
Highlights
Hypersonic flight vehicles (HFVs) have great potential applications both in military and civil industries, it involves two fields: aeronautics and astronautics
In the study of Chen and Ge,[19] using the neural networks and disturbance observer, the output feedback and state feedback controls are designed for uncertain nonlinear system
We present the strict-feedback systems formulation of the longitudinal dynamics into altitude and velocity subsystem in reference to HFV control
Summary
Hypersonic flight vehicles (HFVs) have great potential applications both in military and civil industries, it involves two fields: aeronautics and astronautics. Keywords Flexible hypersonic flight vehicle, external disturbance, disturbance observer In the study of Chen and Ge,[19] using the neural networks and disturbance observer, the output feedback and state feedback controls are designed for uncertain nonlinear system.
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