新型机电作动器作动模块的瞬态特性分析

Transient Characteristic Analysis of a New Type Actuate Module of Electro-mechanical Actuators

目前飞机作动器存在传动链长的问题,影响了作动器系统的效率和性能。本文提出了以直接驱动为目的的机电作动器研究方案,通过对作为作动模块的圆筒型直线感应电动机的研究,建立了数学模型,同时借助多物理场耦合分析软件COMSOL Multiphysics建立了该电动机的动态仿真模型,对其瞬态特性和气隙磁场进行了仿真计算,得到了气隙磁场和次级感应电流的分布情况及次级受力和速度特性。通过与文献对比,证明了本方法的正确性和有效性,对飞机电作动器的研制具有重要意义。

The problem that having long driving chain exists in the actuators,and it affects the performance and efficiency. Scheme of electro-mechanical actuator is presented in this paper for this problem. We choose the cylindrical linear motor as the actuate module. Math model is built,and a simulation model is given based on COMSOL Multiphysics. On this base,calculates the inside electromagnetic field and simulates the transient performance. The distribution of gas magnetic field and the current of the secondary are obtained,and the result is basically identical and validity with experiment data.