Control of a New Type of Direct Drive Piezoelectric Servo Valve

Author

Zhou, Miaolei ; Tian, Yantao ; Yang, Zhigang ; Cheng, Guangming ; Shiju, E.

Author_Institution

Coll. of Commun. Eng., Jilin Univ., ChangChun

fYear

2004

fDate

22-26 Aug. 2004

Firstpage

795

Lastpage

798

Abstract

A new type of two-stage direct drive piezoelectric servo valve is designed and its control system is presented in this paper. The multilayer piezoelectric actuator is used as the electricity-machine converter in this new servo valve, which gives the electrohydraulic servo system higher precision and an extensive application field. The bidirectional piecewise gearshift integral PID control method proposed in this paper can solve the nonlinear problem of the servo valve and satisfy the demand of the control system. Experiment results have confirmed the effectiveness of the proposed method

Keywords

electrohydraulic control equipment; piezoelectric actuators; servomechanisms; three-term control; valves; bidirectional piecewise gearshift integral PID control; control system; direct drive piezoelectric servo valve; electricity-machine converter; electrohydraulic servo system; multilayer piezoelectric actuator; nonlinear system; Communication system control; Control systems; Electrohydraulics; Industrial control; Nonhomogeneous media; Nonlinear control systems; Piezoelectric actuators; Servomechanisms; Three-term control; Valves; bidirection piecewise gearshift integral PID control; direct drive piezoelectric servo valve; electrohydraulic servo system; multilayer piezoelectric actuator; nonlinear system;

fLanguage

English

Publisher

ieee

Conference_Titel

Robotics and Biomimetics, 2004. ROBIO 2004. IEEE International Conference on

Conference_Location

Shenyang

Print_ISBN

0-7803-8614-8

Type

conf

DOI

10.1109/ROBIO.2004.1521884

Filename

1521884