Abstract
A discrete reconfigurable back-stepping controller is proposed to resolve the attitude command tracking problem of hypersonic flight vehicle in reentry mode. The hypersonic flight vehicle dynamic equations are transformed into discrete form based on Euler numerical integration method. Discrete control command is designed via discrete back-stepping. Control allocation strategy is introduced to deal with the resource distributing problem of reaction control system and aero-surfaces. In computer simulation environment, the vehicle tracks command signals precisely and quickly.
Highlights
Hypersonic flight vehicle (HFV), as an efficient and low-cost tool to access space, is drawing more and more attention (Figure 1)
HFV is susceptive to modeling uncertainties and measuring inaccuracies
A robust neural adaptive controller based on inverse dynamics is presented by Xu et al.[8]
Summary
Hypersonic flight vehicle (HFV), as an efficient and low-cost tool to access space, is drawing more and more attention (Figure 1). Control allocation reduces the difficulty of controller design and guarantees the closedloop stability after reconfiguration.[29] In the work by Shtessel et al.,[11] control allocation based on quadratic programming method of aero-surfaces is demonstrated. The HFV discrete model to be used is presented; the discrete back-stepping control algorithm is discussed, followed by the control allocation strategy design. In spite of any initial condition g0, the goal is to design a discrete autopilot to control the HFV attitude angular g to track the desired mission angular profiles gd in the presence of modeling uncertainties and external aerodynamic perturbations.
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