State feedback control for gliding hypersonic vehicle in wide flight envelope

A state feedback-based method is proposed for design a gliding hypersonic vehicle control system. After establishing the dynamics model for the gliding hypersonic vehicle, the features of its strong coupling is analyzed. Then, an improved gliding hypersonic vehicle control system is considered for solving the problems such as external disturbance, wide parameter variation range and strong coupling during the reentry of the gliding hypersonic vehicle. The robust control system composed of servo compensator and pole assignment-based stable compensator is improved by adding a state feedback-based decoupled structure to approximately decouple inputs and outputs of the gliding hypersonic vehicle. Simulation results of tracking attitude angle commands after random variation of parameters and trajectory commands in wide flight envelope validate the control ability of the control system, also demonstrate the validity of the design method for the control system of gliding hypersonic vehicle.