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.
Issue Section:Research Papers
Topics:Bulk modulus, Hydraulic drive systems, Pressure, Modeling, Errors, Stress
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by The American Society of Mechanical Engineers