|本期目录/Table of Contents|

基于三段PI模型的压电驱动器迟滞补偿方法(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2017年1期
页码:
53-60
栏目:
微机电系统
出版日期:
2017-01-15

文章信息/Info

Title:
Compensation of Hysteresis on Piezoelectric Actuators Based on Tripartite PI Model
作者:
马宏伟1 须颖2 安冬1 邵萌2 池东亮1
1. 沈阳建筑大学机械工程学院,沈阳110168; 2. 沈阳建筑大学微纳检测与运动控制实验室,沈阳110168
Author(s):
Ma Hongwei1 Xu Ying2 An Dong1 Shao Meng2 Chi Dongliang1
1. School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China; 2. MicroNano Detection and Motion Control Laboratory, Shenyang Jianzhu University, Shenyang 110168, China
关键词:
压电驱动器 迟滞非线性 速度规律 三段PI模型 迟滞补偿
Keywords:
piezoelectric actuators hysteresis nonlinearity velocity law tripartite PI model hysteresis compensation
分类号:
TP29
DOI:
10.13494/j.npe.20160001
文献标识码:
A
摘要:
迟滞非线性降低了压电陶瓷驱动器对期望位移的跟踪精度,为解决该问题,本文通过二次规划寻优算法,基于最小均方误差准则,以压电陶瓷驱动器的运动速度规律为依据,对压电陶瓷运动速度规律不同的迟滞段分别进行PI建模.建模结果表明,相较于传统PI模型,本文提出的三段PI模型能精确地描述压电陶瓷迟滞曲线的非奇对称性.在对压电陶瓷三段PI建模的基础上,计算出压电陶瓷三段PI逆模型的阈值向量与权系数向量.通过建立的三段PI逆模型对压电陶瓷进行迟滞补偿控制,实验结果表明,与传统PI逆模型迟滞补偿控制相比,三段PI逆模型迟滞补偿控制方法将压电陶瓷对期望位移的跟踪精度提高了813%.
Abstract:
Hysteresis nonlinearity exerts negative effects on the output precision of piezoelectric ceramic actuators. Different hysteresis curves enjoying different velocity laws are described by the classical PrandtlIshlinskii (PI) model. Parameters involving weighting values and threshold values are identified by the method of quadratic programming based on least mean-square error rule. Tripartite PI model can describe the asymmetry of hysteresis curves more accurately when compared with classical PI model. The weighting values and threshold values of tripartite PI inverse model can be calculated with the parameters previously obtained. Tripartite PI inverse controller is adopted to compensate piezoelectric ceramic actuator in the experiment. As a result, the tracking ability of tripartite PI inverse controller is 813% higher than that of the classical PI inverse controller.

参考文献/References

备注/Memo

备注/Memo:
收稿日期: 2016-05-23. 基金项目: 沈阳建筑大学科研基金资助项目(2015058); 辽宁省自然科学基金资助项目(2014020069); 高档石材数控加工装备与技术国家地方联合工程实验室开放基金资助项目(SJSC201513); 沈阳建筑大学学科涵育项目(XKHY-24). 作者简介: 马宏伟(1992— ),男,硕士研究生. 通讯作者: 安 冬,副教授,525856493@qq.com.
更新日期/Last Update: 2017-02-28