Preview Model Predictive Control for Hypersonic Flight Vehicles
Keywords:
Hypersonic vehicles, maneuvering, preview control, model predictive control, composite control, longitudinal trackingAbstract
Excellent maneuverability is one of the key factors in ensuring the successful completion of missions for hypersonic vehicles. Therefore, to address the tracking control problem for hypersonic vehicles, a novel composite control method is proposed by integrating preview control with model predictive control. Based on the introduced nonlinear aircraft model, linearization is performed using small-perturbation theory in preparation for subsequent controller design. Furthermore, building upon the discretized model, a preview controller and a model predictive controller are designed separately, and are subsequently integrated to finalize the design of the control system. The designed control system achieves good tracking of both velocity and altitude while satisfying all system constraints. Compared with the conventional model predictive control method, the proposed one demonstrates improved dynamic performance while requiring less control effort. For velocity tracking, throttle setting, and elevator deflection angle, the maximum values of the PMPC system are approximately 77.65%, 92.45%, and 65.48% of those of the MPC system, respectively. This fully validates the necessity of introducing preview control as a feedforward compensation and opens new avenues for high-performance control of hypersonic vehicles.
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