Open-loop and closed-loop recursive identification of an electro-hydraulic actuator system

Author

Ghazali, Rozaimi ; Sam, Yahaya Md ; Rahmat, Mohd Fuaad ; Zulfatman

Author_Institution

Fac. of Electr. Eng., Univ. Teknol. Malaysia, Skudai, Malaysia

fYear

2010

fDate

28-30 June 2010

Firstpage

285

Lastpage

290

Abstract

This paper presents experimental work on recursive identification of an electro-hydraulic system that represented by a discrete-time model in open-loop and closed-loop configurations. A recursive least square (RLS) method is used to estimate the unknown parameters of the system based on auto regression with exogenous input (ARX) model. Residual analysis is utilized for a model validation. Results are presented which show variations in parameters of the electro-hydraulic system. From the results obtained, position tracking for electro-hydraulic system can be implemented by using conventional proportional-integral-derivative (PID) controller with the aim of the modeling validation.

Keywords

autoregressive processes; closed loop systems; discrete time systems; electrohydraulic control equipment; identification; least squares approximations; open loop systems; recursive estimation; three-term control; auto regression method; closed loop recursive identification; discrete time model; electrohydraulic actuator system; exogenous input model; open loop recursive identification; position tracking; proportional-integral-derivative controller; recursive least square method; residual analysis; Fluid flow control; Force control; Hydraulic actuators; Hydraulic systems; Least squares approximation; Least squares methods; Nonlinear dynamical systems; Parameter estimation; Recursive estimation; System identification; Electro-hydraulic system; Recursive least square; System identification; auto regression with exogenous input; closed-loop identification; open-loop identification;

fLanguage

English

Publisher

ieee

Conference_Titel

Robotics Automation and Mechatronics (RAM), 2010 IEEE Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-6503-3

Type

conf

DOI

10.1109/RAMECH.2010.5513127

Filename

5513127