The Frequency Response of Pneumatic Lines With Branching

[+] Author and Article Information
V. K. Ravindran

Electrical Engineering Department, Stanford University, Stanford, Calif.

J. R. Manning

Design Division, Mechanical Engineering Department, Stanford University

J. Dyn. Sys., Meas., Control 95(2), 194-196 (Jun 01, 1973) (3 pages) doi:10.1115/1.3426679 History: Received August 03, 1972; Online July 13, 2010


Some experimental results are presented for amplitude and phase of small signal frequency response of pneumatic lines in configurations with branching. The recent data of Franke, Malanowski, and Martin [1] is extended in two areas: 1 Phase as well as amplitude measurements were made. 2 Stepped and conical branches were studied as well as constant area branches. Agreement is good with theoretical predictions based on the Iberall-Nichols-Brown model [2, 3, 4] and a simple continuity model for branch junctions. Three-dimensional effects at junctions are apparently not significant for the small amplitudes (less than 0.1 psi) and range of frequencies (100 to 1000 Hz) studied.

Copyright © 1973 by ASME
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