Title :
Modelling and LPV control of an electro-hydraulic servo system
Author :
Wijnheijmer, Frans ; Naus, Gerrit ; Post, Wil ; Steinbuch, Maarten ; Teerhuis, Piet
Author_Institution :
department of Mechanical Engineering, Control Systems Technology group of the Eindhoven University of Technology, The Netherlands
Abstract :
This paper aims to show the modelling and control of an hydraulic servo system, targeting at frequency domain based controller design and the implementation of a LPV controller. The actual set-up consists of a mass, moved by a hydraulic cylinder and an electro-hydraulic servo valve. A nonlinear parametric model of the system, a number of fitted linear black box models as well as a LPV model combining these fits have been determined. In discretization of the control strategies for implementation on a digital control system, a new discretization algorithm is derived for LPV structures. Simulations and experimental results indicate the potential benefits of a position dependent controller over a classical controller, but show the limitations as well.
Keywords :
Control system synthesis; Control systems; Engine cylinders; Force control; Frequency domain analysis; Nonlinear dynamical systems; Parametric statistics; Pistons; Servomechanisms; Valves;
Conference_Titel :
Computer Aided Control System Design, 2006 IEEE International Conference on Control Applications, 2006 IEEE International Symposium on Intelligent Control, 2006 IEEE
Conference_Location :
Munich, Germany
Print_ISBN :
0-7803-9797-5
Electronic_ISBN :
0-7803-9797-5
DOI :
10.1109/CACSD-CCA-ISIC.2006.4777136
