Modelling, identification, and compensation of fractional-order creep in frequency domain for piezoactuators

被引：1
|
作者：
Lie, Yanfang [1 ,2 ]
Liu, Hong [1 ]
Zhu, Dongfang [3 ]
机构：
[1] Harbin Inst Technol, State Key Lab Robot & Syst, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Dept Aerosp Engn, Harbin 150001, Peoples R China
[3] Shanghai Inst Spaceflight Control Technol, Shanghai Key Lab Aerosp Intelligent Control Techn, Shanghai 201109, Peoples R China
来源：
ELECTRONICS LETTERS | 2016年 / 52卷 / 17期
基金：
中国博士后科学基金;
关键词：
HYSTERESIS;
D O I：
10.1049/el.2016.0611
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Unlike traditionally studied in time domain, the creep in a piezoelectric actuator is studied in frequency domain. It is modelled as a fractional-order integrator, identified in frequency domain, and compensated for by connecting with a fractional-order differentiator in serial. It is demonstrated that identification and compensation in frequency domain are much simpler to execute than that in time domain. Experimental results validate the effectiveness of the proposed algorithm and the creep non-linearity reduces by greater than 80%.
引用
收藏
页码：1444 / U100
页数：2
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