The Variation of Oil Effective Bulk Modulus With Pressure in Hydraulic Systems

[+] Author and Article Information
Yu Jinghong, Chen Zhaoneng, Lu Yuanzhang

Mechanical Engineering Department, Shanghai Jiao Tong University, Shanghai 200030, Peoples’ Republic of China

J. Dyn. Sys., Meas., Control 116(1), 146-150 (Mar 01, 1994) (5 pages) doi:10.1115/1.2900669 History: Received August 02, 1991; Revised June 26, 1992; Online March 17, 2008


The paper presents theoretical modeling and an experimental investigation of the variation of oil effective bulk modulus (βe ) with pressure in hydraulic systems. A pressure sensitive model of βe and its several simplified forms have been derived. In addition, a method for parameter identification has been formulated. In an actual hydraulic system, values for βe at different load pressures were obtained, model parameters identified and modelling errors evaluated.

Copyright © 1994 by The American Society of Mechanical Engineers
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