引用本文:杨赟杰,朱纪洪,和阳.近似时间最优的舵机多模位置控制策略[J].控制理论与应用,2018,35(4):468~474.[点击复制]
YANG Yun-jie,ZHU Ji-hong,HE Yang.Multi-mode position control strategy with approximate time-optimal for actuator[J].Control Theory and Technology,2018,35(4):468~474.[点击复制]
近似时间最优的舵机多模位置控制策略
Multi-mode position control strategy with approximate time-optimal for actuator
摘要点击 2501  全文点击 1191  投稿时间：2017-02-19  修订日期：2017-11-22
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DOI编号  10.7641/CTA.2017.70087
  2018,35(4):468-474
中文关键词  伺服作动系统  特征模型  一阶惯性环节  最大值原理  时间最优  切换区
英文关键词  servo actuator systems  characteristic model  first order inertial link  maximum principle  time-optimal  switching zone
基金项目  国家自然科学基金项目(61603210, 61673240)资助.
作者单位E-mail
杨赟杰 清华大学 yyj15@mails.tsinghua.edu.cn 
朱纪洪* 清华大学 jhzhu@tsinghua.edu.cn 
和阳 清华大学  
中文摘要
      高超声速飞行器要求其伺服作动系统具有高动态高精度的特性, 针对传统控制方法难以兼顾系统动态和 精度的难题, 本文设计了一种近似时间最优的舵机多模位置控制策略. 首先建立了以一阶惯性环节串联积分器表征 舵机输入输出特性的特征模型. 然后以相平面为分析工具, 给出了其近似时间最优控制的切换区; 在切换区外以快 速性为目标而采用bang-bang最优控制, 在切换区内以避免振荡和超调为目标而采用bang-bang次优控制; 为提高稳 态性能, 在小误差时时采用线性控制. 实验表明, 该方法响应快速, 避免了振荡和超调, 很好地满足了对伺服作动系 统高动态高精度的要求.
英文摘要
      Hypersonic vehicle requires its servo actuator systems have high dynamic and high precision features. Due to conventional control methods are difficult to balance system dynamics and precision, a multi-mode position control strategy with approximate time-optimal for actuator is designed in this paper. First, the actuator characteristic model, which is a first order inertia link in series with integrator, is established to express its input-output feature. Then, with phase plane as the analysis tool, the switching zone of approximate time-optimal control is given. At the outside of switching zone, the bang-bang optimal control is applied for rapidity. And at the inside of switching zone, the bang-bang suboptimal control is proposed to avoid oscillation and overshoot. PD control is used at the linear zone for high accuracy in steady state. Experiments indicate that the system response under the algorithm is rapid, with almost zero oscillation and zero overshoot. The control strategy satisfies the requirement of high dynamic and high precision on the servo actuator systems very well.