后屈曲预压缩技术在飞机舵机系统中的应用  

The Application of Post-buckled Pre-compressed Technology on the Aircraft

作　　者：朱闯锋[1] ZHU Chuang-feng(Shanghai Aircraft Design & Research Institute, Shanghai 201210, China)

机构地区：[1]上海飞机设计研究院,上海201210

出　　处：《科学技术与工程》2020年第32期13472-13476,共5页Science Technology and Engineering

摘　　要：采用有限单元法建立了飞机舵机系统的刚柔耦合动力学模型,对舵机的负载输出特性进行了分析,同时利用Fluent软件对某翼型在低速下的气动参数进行仿真计算,并将计算结果导入舵机模型中,对舵机在特定马赫数下由舵偏角变化导致的负载力矩改变时的输出特性进行分析。结果表明,气动载荷的作用会减小舵机的静态输出能力,但轴向力的增加可以显著提高舵机系统的机电耦合效率,从而弥补当舵面发生较大转角时铰链力矩对舵机输出特性产生的负面影响,也进一步验证了该舵机系统完全可以满足小型飞机的应用需求。The rigid flexible coupling dynamic model of the rudder actuator used on the aircraft was established with the finite element method,and the output characteristics were analyzed.The aerodynamic characteristics of the airfoil at low speed were simulated by Fluent software,and the simulation results were imported into the dynamic model to get the output characteristics of the actuator when the load was changed caused by the rotation of the rudder surface.The results show that the effect of aerodynamic load will reduce the static output capacity of the actuator,but the increase of axial force can significantly improve the electromechanical coupling efficiency of the servo system,so as to make up for the negative effect of hinge moment on the output characteristics.This research verifies that the piezoelectric actuator can fully meet the application requirements of aircraft.

关 键 词：压电驱动器 刚柔耦合 气动载荷 机电耦合 

分 类 号：V214.19[航空宇航科学与技术—航空宇航推进理论与工程]