Longitudinal Controller Design for Climb Phase of Combined-cycle Vehicle
According to the flight characteristics of the aircraft and its own aerodynamic structure,a complex nonlinear mathematical model is established,and the static stability and modal characteristics are analyzed.To cope with the longitudinal attitude angle jitter of hypersonic vehicle in inspiratory climb phase,the idea that the control system should keep the target vehicle low dynamic characteristics in the inspiratory climb phase is proposed.The longitudinal control law based on angular rate damping inner loop is designed and analyzed from time domain and frequency domain,and its robustness is verified by uncertainty simulation.The final conclusion is that the damping inner loop is suitable for the longitudinal control of the object UAV in the suction climb phase.
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