Real-time compensation of hysteresis and creep in piezoelectric actuators

被引：154

作者：

Janocha, H ^{[1
]}

Kuhnen, K ^{[1
]}

机构：

[1] Univ Saarland, Lab Proc Automat, D-66041 Saarbrucken, Germany

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2000年 / 79卷 / 02期

关键词：

piezoelectric actuator; hysteresis; creep; nonlinear compensation; inverse control;

D O I：

10.1016/S0924-4247(99)00215-0

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：

An approach for the simultaneous compensation of the hysteretic and creep transfer characteristics of a piezoelectric stack actuator by interposing an inverse system in an open loop control is described. The basis of the inverse control paradigm is formed by complex creep and hysteresis operators. Both operators consist of weighted superpositions of elementary operators which can easily be described mathematically and which reflect the qualitative properties of the transfer characteristic. This operator-based actuator model allows the prediction of the transfer characteristic within the inverse control paradigm in order to calculate the compensation signal in real-time. As a result, the maximum linearity error caused by hysteresis and creep effects is lowered by an order of magnitude. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：83 / 89

页数：7