Novel Bidirectional Rotary Proportional Actuator for Electrohydraulic Rotary Valves

Author

Cui, Jian ; Ding, Fan ; Li, Qipeng

Author_Institution

Zhejiang Univ., Hangzhou

Volume

43

Issue

7

fYear

2007

fDate

7/1/2007 12:00:00 AM

Firstpage

3254

Lastpage

3258

Abstract

This paper presents a bidirectional rotary actuator for electrohydraulic rotary valves using permanent-magnet rotor with output torques and angular displacements proportional to the excitation currents. Finite-element analysis provides the static characteristics of the actuator and the analysis is coupled to a nonlinear time domain simulation to determine the dynamic performance. The measured and simulated results agree well and show that the actuator can produce torques up to plusmn0.65 Nm, linear angular displacements of plusmn8deg with hysteresis less than 4%, and frequency bandwidth (-3 dB) about 190 Hz.

Keywords

electrohydraulic control equipment; electromagnetic actuators; finite element analysis; nonlinear control systems; rotors; valves; angular displacements; bidirectional rotary proportional actuator; electrohydraulic rotary valves; excitation currents; finite-element analysis; linear angular displacements; nonlinear time domain simulation; permanent-magnet rotor; Analytical models; Couplings; Displacement measurement; Electrohydraulics; Finite element methods; Frequency measurement; Performance analysis; Pneumatic actuators; Time domain analysis; Valves; Electrohydraulic rotary valves; finite-element analysis; high pressure; permanent magnets; rotary electromagnetic actuator;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.894214

Filename

4252284