Tracking control of piezoelectric actuators by feedforward hysteresis compensation

被引：0
作者：
Ru, Changhai [1 ]
Pang, Bohui [2 ]
Wang, Kejun [1 ]
Ye, Xiufen [1 ]
机构：
[1] Harbin Engn Univ, Automat Coll, Harbin 150001, Heilongjiang, Peoples R China
[2] Harbin Univ Commerce, Coll Management, Harbin 150001, Heilongjiang, Peoples R China
来源：
IEEE ICMA 2006: PROCEEDING OF THE 2006 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS AND AUTOMATION, VOLS 1-3, PROCEEDINGS | 2006年
基金：
中国国家自然科学基金;
关键词：
piezoelectric actuator; feedforward compensation; hysteresis;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Due to the inherent hysteresis nonlinearity, the piezoelectric actuator always causes positioning error in the open-loop operation and instability in the closed-loop operation. In order to improve the positioning accuracy and response speed, a control method for piezoelectric actuator based on a PID feedback controller with a feedforward compensation is proposed. The feedforward controller based on a new mathematical model is used to describe the nonlinearity of piezoelectric actuator and improve the response speed. The feedback controller consists of a regular PID controller, which is used to improve the positioning accuracy. Finally, the tracking control experiments of piezoelectric actuators for a desired sinusoidal trajectory are performed according to the proposed control method and the experimental results demonstrate that the positioning precision is noticeably improved by augmenting the feedback controller with a model of hysteresis in the feedforward loop. The maximum error in tracking a sinusoidal signal is lowered about one order of magnitude in comparison with only using PID controller.
引用
收藏
页码：2116 / +
页数：2
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