Rhombic micro-displacement amplifier for piezoelectric actuator and its linear and hybrid model

被引：64

作者：

Chen, Jinglong ^{[1
]}

Zhang, Chunlin ^{[2
,3
]}

Xu, Minglong ^{[2
]}

Zi, Yanyang ^{[1
]}

Zhang, Xinong ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mfg & Syst Engn, Xian 710049, Peoples R China

[2] Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China

[3] Cent South Univ Forestry & Technol, Coll Civil Engn & Mech, Changsha 410018, Hunan, Peoples R China

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2015年 / 50-51卷

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Rhombic micro-displacement amplifier; Hybrid model; Classical Preisach model; Support vector machine; SCOTT-RUSSELL MECHANISM; HYSTERESIS COMPENSATION; PIEZOCERAMIC ACTUATOR; IDENTIFICATION;

D O I：

10.1016/j.ymssp.2014.05.047

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper proposes rhombic micro-displacement amplifier (RMDA) for piezoelectric actuator (PA). First, the geometric amplification relations are analyzed and linear model is built to analyze the mechanical and electrical properties of this amplifier. Next, the accurate modeling method of amplifier is studied for important application of precise servo control. The classical Preisach model (CPM) is generally implemented using a numerical technique based on the first-order reversal curves (FORCs). The accuracy of CPM mainly depends on the number of FORCs. However, it is generally difficult to achieve enough number of FORCs in practice. So, Support Vector Machine (SVM) is employed in the work to circumvent the deficiency of the CPM. Then the hybrid model, which is based on discrete CPM and SVM is developed to account for hysteresis and dynamic effects. Finally, experimental validation is carried out. The analyzed result shows that this amplifier with the hybrid model is suitable for control application. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：580 / 593

页数：14

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