超磁致伸缩作动器的率相关建模与跟踪控制

郭咏新; 毛剑琴

超磁致伸缩作动器的率相关建模与跟踪控制

北京航空航天大学自动化科学与电气工程学院, 北京 100191

基金项目: 国家自然科学基金重点项目(91016006, 91116002); 中央高校基本科研业务费专项资金资助项目

详细信息

作者简介:
郭咏新(1979-),男,河北唐山人,博士生,guoyongxin1979@126.com.

中图分类号: TP29
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- 被引次数: 0
出版历程
- 收稿日期: 2012-12-13
- 网络出版日期: 2013-10-30

Rate-dependent modeling and tracking control of giant magnetostrictive actuators

School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 利用Hammerstein模型对超磁致伸缩作动器(GMA, Giant Magnetostrictive Actuators)进行建模, 分别以改进的Prandtl-Ishlinskii(MPI, Modified Prandtl-Ishlinskii)模型和外因输入自回归模型(ARX, Autoregressive model with exogenous input)代表Hammerstein模型中的静态非线性部分和线性动态部分,并给出了模型的辨识方法.此模型能在1~100 Hz频率范围内较好地描述GMA的率相关迟滞非线性特性.提出了前馈逆补偿和比例-微分-积分(PID, Proportional-Integral-Derivative)反馈相结合的复合控制策略.实时跟踪幅值为16 μm的单一频率和复合频率正弦参考输入信号, 均方根误差小于1 μm, 相对误差小于10%, 证明了控制策略的有效性.
- 超磁致伸缩作动器 /
- 率相关迟滞非线性 /
- Hammerstein模型 /
- MPI模型 /
- 跟踪控制
Abstract: A Hammerstein model was proposed to model giant magnetostrictive actuators (GMA). A modified Prandtl-Ishlinskii(MPI) model and an autoregressive model with exogenous input (ARX) were used to represent the static nonlinear part and the linear dynamic part of the Hammerstein model respectively. Model identification method was also given. The proposed model can describe the rate-dependent hysteresis of GMA from 1 Hz to 100 Hz well. A compound controller containing inverse compensator and proportional-integral-derivative (PID) feedback was designed for tracking control. Real time trajectory tracking of single frequency and composite frequency sinusoidal reference inputs with the amplitude of 16 μm was conducted. The root-mean-square error was less than 1μm and the relative error was less than 10%, which verify the effectiveness of the control strategy.
- giant magnetostrictive actuators /
- rate-dependent hysteresis /
- Hammerstein model /
- modified Prandtl-Ishlinskii(MPI) model /
- tracking control

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