Research on dynamic characteristic of the compliant lever mechanism driven by PZT

Author

Sun, Baoyu ; Yu, Haiying ; Wang, Quanlin

Author_Institution

Sch. of Mechatron. Eng., Changchun Univ. of Technol., Jilin, China

Volume

2

fYear

2010

fDate

24-26 Aug. 2010

Firstpage

172

Lastpage

175

Abstract

Piezoelectric actuator can cause severe non-linearity deformation under higher electrical field, the position accuracy of it will be damaged. The nonlinearity of piezoelectric actuator is related not only to nonlinearity of material, creep and hysteresis, but also to the dynamic performance of actuator. The hysteresis and nonlinearity of dynamic performance is a key factor for piezoelectric actuator to affect improvement of controlling accuracy. With the compound control algorithm of feed-forward and digital PID control, the closed-loop system is established to adjust dynamic response of the compliant lever mechanism of single degree of freedom. It is indicated by experiment that the time of dynamic response declines from 90ms to 50ms, the rapid response of mechanism is realized.

Keywords

closed loop systems; creep; deformation; digital control; feedforward; hysteresis; piezoelectric actuators; three-term control; PZT; closed-loop system; compliant lever mechanism; compound control algorithm; creep; digital PID control; dynamic characteristic; feed-forward; higher electrical field; hysteresis; nonlinearity deformation; piezoelectric actuator; compliant lever mechanism; dynamic characteristic; piezoelectric actuator;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer, Mechatronics, Control and Electronic Engineering (CMCE), 2010 International Conference on

Conference_Location

Changchun

Print_ISBN

978-1-4244-7957-3

Type

conf

DOI

10.1109/CMCE.2010.5609701

Filename

5609701