Tube-MPC-Based Robust Control Method of Elastic Hypersonic Vehicle with Input Delay

In this paper, a Tube-MPC-based control method is proposed for elastic hypersonic vehicle with input delay. Firstly the polytopic LPV longitudinal model of elastic hypersonic vehicle with input delay is obtained. In order to deal with the delay effectively, the state transformation is implemented to convert the original LPV model into the new model without input delay. Secondly, a robust feedback controller and nominal controller of Tube-MPC are designed based on the delay-free polytopic LPV model. Then, the notching filter is combined in pitch rate dynamics to suppress the influence of elasticity. Finally, the effectiveness of the proposed control strategy is verified by simulation.