Effect of connected system on gas pressure controllers’ stability

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Abstract

In the paper the influence of dynamic performances of pipe systems connected to the control valve on system stability is studied through mathematical modeling and experimental work. Dynamic interaction between typical pressure control valves and up- and downstream pipelines is investigated. Stability criteria are derived in the form of requirements for input impedances of pipes connected. The best and the worse boundary conditions are deduced for each type of controllers. The best boundary conditions ensure stability even in a case of zero damping of the poppet. The worse boundary conditions determine maximum damping required to keep stability in any other system. To meet the requirements received, effective measures are suggested for each type of the control valve on the basis of special corrective devices (compensators) of the acoustic filter type. A scheme, parameters and location of the devices are determined by the type and parameters of the valve.

                                             

About the authors

V. Sverbilov

Samara State Aerospace University

Author for correspondence.
Email: v.sverbilov@mail.ru
Russian Federation

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Copyright (c) 2015 Journal of Dynamics and Vibroacoustics


Journal of Dynamics and Vibroacoustics

ISSN 2409-4579 (Online)

Publisher and Founder: Samara National Research University, 34, Moskovskoye shosse, Samara, 443086, Russian Federation.

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Editor-in-chief:  Academician of the RAS
E. V. Shakhmatov 

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