航空学报 > 2009, Vol. 30 Issue (3): 518-525

电动静液作动器非线性框图建模与鲁棒控制方法

康荣杰1,焦宗夏1,Jean Charles Mare2,尚耀星1,吴帅1   

  1. 1.北京航空航天大学 自动化科学与电气工程学院 2.国家应用科学学院 机械工程系
  • 收稿日期:2008-02-28 修回日期:2008-05-01 出版日期:2009-03-25 发布日期:2009-03-25
  • 通讯作者: 康荣杰

Nonlinear Block Diagram Model and Robust Control of Electrohydrostatic Actuator

Kang Rongjie1, Jiao Zongxia1, Jean Charles Mare2, Shang Yaoxing1, Wu Shuai1   

  1. 1. School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics2. Department of Mechanical Engineering, Institut National des Sciences Appliquees
  • Received:2008-02-28 Revised:2008-05-01 Online:2009-03-25 Published:2009-03-25
  • Contact: Kang Rongjie

摘要: 阐述了机载电动静液作动器(EHA)的典型工作原理与结构特点,根据其元部件数学方程,建立非线性精确框图模型,完善了EHA补油回路和摩擦特性的描述。通过对系统阻尼、稳态误差及摩擦的仿真分析,设计了一种结合动态压力反馈与变增益控制策略的状态反馈控制器,改善了系统动、静态性能。鲁棒性测试结果反映了系统参数不确定性对性能的影响。

关键词: 电动静液作动器, 框图模型, 仿真, 控制, 鲁棒性

Abstract: This article describes a typical architecture of electro-hydrostatic actuator (EHA), and establishes its nonlinear accuracy model by block diagram, which contains the refeeding circuit and friction. Based on the simulation analysis of damping, static error and friction, this article utilizes the dynamic pressure feedback and gain variable strategy to design the controller in state space. The robusttest results indicate the influence of parametric uncertainness on system performance.

Key words: electro-hydrostatic actuator, block diagram model, simulation, control, robustness

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