PROJECT TITLE :

Disturbance Observer-Based Antiwindup Control for Air-Breathing Hypersonic Vehicles

ABSTRACT:

During this paper, a mixture of feedback linearization and disturbance observer-primarily based management (DOBC) is adopted for the planning of a state-feedback controller that regulates the speed and altitude of air-respiratory hypersonic vehicles (AHVs) subject to constrained inputs. First, a disturbance observer is established to estimate the effect of possible uncertainties and disturbances on the nominal vehicle model that is named the lumped disturbance. Then, a compensation technique is proposed based on disturbance observer and feedback linearization control to counteract the mismatched lumped disturbance. Furthermore, a novel antiwindup modification is implemented on the baseline control to handle the doable input saturation. The designed controller addresses the problem of stability robustness with respect to system uncertainties and disturbances, and achieves zero-error tracking with sensible performance and antiwindup property meanwhile, that is the main merit compared with different existing AHV controllers. Finally, simulation is presented to verify the effectiveness of this control theme.