Multi-loop Adaptive Load Relief Control Technology for Launch Vehicle

Aiming at the problem that the shear wind interference makes the aerodynamic load larger when the new generation launch vehicle passes through the windy area, a multi-loop self-adaptive active load relief control method is proposed. Based on the overload feedback load relief method, the observer compensation loop is introduced, and the influence of the multi-loop joint load relief control method on the aerodynamic load and the control load is derived. An adaptive gain real-time scheduling algorithm based on aerodynamic estimation is designed. The simulation evaluation results show that the multi-loop adaptive load relief control method has better adaptability to shear wind interference than the overload feedback load relief control method, which can further improve the load relief ability.