The Dynamic Characteristics of an Electro-Hydraulic Servovalve

[+] Author and Article Information
D. J. Martin

The General Electric Co. Ltd., Hirst Research Centre, Wembley, England

C. R. Burrows

School of Applied Sciences, University of Sussex, England

J. Dyn. Sys., Meas., Control 98(4), 395-406 (Dec 01, 1976) (12 pages) doi:10.1115/1.3427057 History: Received July 15, 1976; Online July 13, 2010


The frequency responses of an experimental electro-hydraulic position control system and a simulation of the system are compared. Three different valve models are used in the simulation in an attempt to highlight the important parameters of an electro-hydraulic servovalve. It is found that a second order compensated valve model based on steady-state considerations provides a good correlation with the experimental system up to 35Hz and can be used for stability calculations up to 80Hz.

Copyright © 1976 by ASME
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