Title :
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
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;
Conference_Titel :
Control Applications, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Trieste
Print_ISBN :
0-7803-4104-X
DOI :
10.1109/CCA.1998.728454
