Discrete sliding mode controller for pressure control with an electrohydraulic servovalve

Author

Fink, Alexander ; Singh, Tarunraj

Author_Institution

Dept. of Mech. & Aerosp. Eng., State Univ. of New York, Buffalo, NY, USA

Volume

1

fYear

1998

fDate

1-4 Sep 1998

Firstpage

378

Abstract

Electrohydraulic servovalves are the most commonly used control devices for hydraulic systems and are difficult to control because they are in essence highly nonlinear. In this study, a discrete time sliding mode controller is designed to control the pressure drop across a load. A nonlinear transformation is presented to convert the system dynamics to a linear state space representation. The performance of the controller is numerically analyzed and compared to a classical PID controller

Keywords

control system synthesis; discrete time systems; electrohydraulic control equipment; hydraulic systems; pressure control; servomechanisms; valves; variable structure systems; classical PID controller; control devices; discrete sliding mode controller; electrohydraulic servovalve; hydraulic systems; linear state space representation; nonlinear transformation; pressure control; Control systems; Electrohydraulics; Hydraulic systems; Nonlinear control systems; Nonlinear dynamical systems; Performance analysis; Pressure control; Sliding mode control; State-space methods; Three-term control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 1998. Proceedings of the 1998 IEEE International Conference on

Conference_Location

Trieste

Print_ISBN

0-7803-4104-X

Type

conf

DOI

10.1109/CCA.1998.728454

Filename

728454