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RESEARCH PAPERS

Modeling and Dynamic Evaluation of a Two-Stage Two-Spool Servovalve Used for Pressure Control

[+] Author and Article Information
S. T. Tsai

Department of Industrial Technology, Illinois State University, Normal, IL 61761

A. Akers

Department of Aerospace Engineering and Engineering Mechanics, Engineering Research Institute, Iowa State University, Ames, Iowa 50011

S. J. Lin

Department of Industrial Technology, Eastern Michigan University, Ypsilanti, Michigan 48197

J. Dyn. Sys., Meas., Control 113(4), 709-713 (Dec 01, 1991) (5 pages) doi:10.1115/1.2896479 History: Received September 25, 1989; Revised December 01, 1990; Online March 17, 2008

Abstract

Experimental results for a unique design of a two-spool pressure control valve were reported by Anderson (1984). The first stage is a dynamically stable flapper-nozzle valve for which a mathematical model is already available (Lin and Akers, 1989a). For the second stage, however, which consists of two parallel spools in a common body, no such model existed. The purpose of this paper was therefore to construct such a model and to compare results calculated from it to experimental values. Moderately good agreement with experimental values was obtained.

Copyright © 1991 by The American Society of Mechanical Engineers
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