Dynamic Stiffness Analysis for All-Electric Flight Control of EMA Systems
摘要
The dynamic stiffness of the actuator is one of the most critical indicators for the flight control system, which is related to the aircraft's handling performance. This paper focuses on improving the dynamic stiffness of an EMA-based flight control surface by analyzing the influence of parameters in each loop on the FOC-based controller. Firstly, the model of the system is established by modular modeling, including the dynamics module, the PMSM module and the controller module. The zero-pole cancellation method is used to ensure that each control loop parameter can be represented by a single parameter. Secondly, the influence of the parameters of each loop on the dynamic stiffness is analyzed. Finally, a parameter tuning method for the purpose of improving the dynamic stiffness of the system is proposed, which can provide guidance for the future flight control design.