Abstract
In this paper, an improved discrete sliding mode control (SMC) is investigated for a hypersonic vehicle (HV) cruise control system under packet dropouts. Packet dropouts are common faults in networked control systems (NCS) of HV. The controller designed consist of a discrete SMC controller and a state feedback compensator. The state feedback compensator is designed based on the HV asynchronous dynamic model under Lyapunov theory to restrain the influence of the data packet dropouts, improve the tracking performance and anti-fault robustness. Set the HV system with state feedback as an augmentation system. A discrete SMC system is established for the augmentation system to achieve the target trajectory. We verify the discrete SMC approach in the cruising flight. A simulation example supports the theory.
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