Mathematical modeling of a two spool flow control servovalve using a pressure control pilot

Randall T. Anderson, Perry Y. Li

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

A nonlinear dynamic model for an unconventional, commercially available electrohydraulic flow control servovalve is presented. The two stage valve differs from the conventional servovalve design in that: it uses a pressure control pilot stage; the boost stage uses two spools, instead of a single spool, to meter flow into and out of the valve separately; and it does not require a feedback wire and ball. Consequently, the valve is significantly less expensive. The proposed model captures the nonlinear and dynamic effects. The model has been coded in Matlab/Simulink and experimentally validated.

Original languageEnglish (US)
Pages (from-to)420-427
Number of pages8
JournalJournal of Dynamic Systems, Measurement and Control, Transactions of the ASME
Volume124
Issue number3
DOIs
StatePublished - Sep 2002

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