Modeling and Mode Switching Analysis of Electro-hydrostatic Actuators for Primary Flight Control System  

主飞控电静液作动器的建模和模式切换分析

作　　者：GUO Tuanhui FU Yongling CHEN Juan 郭团辉;付永领;陈娟(北京航空航天大学机械工程及自动化学院,北京100191;航天伺服驱动与传动技术实验室,北京100191)

机构地区：[1]School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,P.R.China [2]The Laboratory of Aerospace Servo Actuation and Transmission,Beijing 100191,P.R.China

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2025年第1期25-36,共12页南京航空航天大学学报(英文版)

基　　金：supported by the Chinese Civil Aircraft Project(No.MJ-2017-S49).

摘　　要：With the advancement of more electric aircraft(MEA)technology,the application of electro-hydrostatic actuators(EHAs)in aircraft actuation systems has become increasingly prevalent.This paper focuses on the modeling and mode switching analysis of EHA used in the primary flight control actuation systems of large aircraft,addressing the challenges associated with mode switching.First,we analyze the functional architecture and operational characteristics of multi-mode EHA,and sumarize the operating modes and implementation methods.Based on the EHA system architecture,we then develop a theoretical mathematical model and a simulation model.Using the simulation model,we analyze the performance of the EHA during normal operation.Finally,the performance of the EHA during mode switching under various functional switching scenarios is investigated.The results indicate that the EHA meets the performance requirements in terms of accuracy,bandwidth,and load capacity.Additionally,the hydraulic cylinder operates smoothly during the EHA mode switching,and the response time for switching between different modes is less than the specified threshold.These findings validate the system performance of multi-mode EHA,which helps to improve the reliability of EHA and the safety of aircraft flight control systems.随着飞机多电化(More electric aircraft,MEA)技术的发展,电静液作动器(Electro-hydrostatic actuators,EHAs)在飞机作动系统中的应用越来越广泛。针对EHA在大型飞机主飞控作动系统中应用涉及的模式切换问题,开展飞机主飞行控制EHA的建模和模式切换分析研究。首先,对多工作模式EHA的功能架构和工作特点开展分析,总结EHA的工作模式和实现方式。之后,基于EHA的体系架构,建立EHA的理论数学模型和仿真模型。接下来,基于仿真模型对EHA正常运行时的性能进行分析。最后,结合功能切换场景研究了EHA在模式切换过程中的性能表现。结果表明,EHA在精度、带宽和带载能力方面满足性能要求,且EHA在模式切换过程中液压缸运行平稳,在不同工作模式之间切换的响应时间均小于指标要求。研究结果验证了多模式EHA的系统性能,有助于提升EHA的可靠性及飞机飞行控制系统的安全性。

关 键 词：large aircraft flight control system electro-hydrostatic actuator(EHA) mode switching simulation analysis 

分 类 号：V227[航空宇航科学与技术—飞行器设计] V245.1