一种货舱门伺服控制器的设计与仿真

Design and Simulation of a Cargo Door Servo Controller

为降低某型窄体客机货舱门机电作动器(EMA)的功率需求,并有效控制未知扰动对控制器的影响,提出了一种融合速度比例积分(PI)控制器和电流滞环跟踪控制算法。首先,对EMA工作过程中的复杂载荷工况进行深入分析,从而获得货舱门在实际工作过程中的负载特性。其次,基于货舱门负载特性对控制器的运动控制过程功率需求进行了匹配设计,实现了控制器的架构和主要功能电路的设计。最后,为验证所提出控制策略的有效性,在MATLAB/Simulink软件中构建了控制器的模型,并对货舱门开关门运动过程进行仿真。仿真结果证明所提出的控制策略能够将转速波动范围控制在±120 r/min以内,有效降低了系统的功率,还显著提升了控制器对外部扰动的动态响应能力。

In order to reduce the power demands of the electromechanical actuator(EMA)for a cargo door at a certain type of narrow-body aircraft and effectively control the impact of unknown disturbances on the controller,this paper designs a high-performance servo controller,and proposes a method of integrating velocity PI controller and current hysteresis tracking control by strategy.First,on the basis of deeply analyzing the complex load conditions during the operation of the EMA,the load characteristics of the cargo door in actual working conditions are obtained.And then,based on the load characteristics of the cargo door,the power demands of the controller’s motion control process are matched and designed,achieving the design of the controller’s architecture and the main functional circuit.Finally,to verify the effectiveness of the proposed control strategy,a model of the controller is constructed by MATLAB/Simulink software,and the opening-and-closing motion process of the cargo door is simulated.The simulation results show that the proposed control strategy can control the speed fluctuation range within±120 r/min,effectively reducing the system’s power consumption and significantly enhancing the controller’s dynamic response capability to external disturbances.