Title :
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
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;
Conference_Titel :
Robotics and Biomimetics, 2004. ROBIO 2004. IEEE International Conference on
Conference_Location :
Shenyang
Print_ISBN :
0-7803-8614-8
DOI :
10.1109/ROBIO.2004.1521884
