DocumentCode
3482998
Title
The Nonlinear Accuracy Model of Electro-Hydrostatic Actuator
Author
Kang, Rongjie ; Jiao, Zongxia ; Wu, Shuai ; Shang, Yaoxing ; Mare, Jean-Charles
Author_Institution
Sch. of Autom. Sci. & Electr. Eng., Beihang Univ., Beijing
fYear
2008
fDate
21-24 Sept. 2008
Firstpage
107
Lastpage
111
Abstract
The electro-hydrostatic actuator (EHA) is a kind of power-by-wire (PBW) actuator. In this paper, a typical architecture of EHA is described and the block diagram model of EHA is established directly from the mathematic equations without transfer functions, which is a nonlinear accuracy model. The influence of refeeding circuit on the EHA system is discussed based on the comparison with conventional linear model. A gain-variable PID controller is introduced to this model to compensate the friction.
Keywords
electrohydraulic control equipment; block diagram model; electrohydrostatic actuator; gain-variable PID controller; mathematic equations; nonlinear accuracy model; power-by-wire actuator; refeeding circuit; transfer functions; Brushless DC motors; Circuits; DC motors; Equations; Friction; Hydraulic actuators; Induction motors; Mathematical model; Mathematics; Power system modeling; EHA; block diagram; control; modeling;
fLanguage
English
Publisher
ieee
Conference_Titel
Robotics, Automation and Mechatronics, 2008 IEEE Conference on
Conference_Location
Chengdu
Print_ISBN
978-1-4244-1675-2
Electronic_ISBN
978-1-4244-1676-9
Type
conf
DOI
10.1109/RAMECH.2008.4681367
Filename
4681367
Link To Document