ABOUT THE LUMPED PARAMETER APPROACH TO HYDRAULIC LINE MODELLING

Document Type : Original Article

Author

Lecturer, Chair of Aircraft, Military Technical College, Cairo.

Abstract

This paper deals with the development of simple lumped models of hydraulic transmission line. The models take into consideration the effect of viscous damping, fluidinertia, fluid compressibility and elas-ticity of line material. The developed models are one-directional;the fluid speed and pressure are thought of as averaged quantities over the cross section of the line. The simplicity of models result from the sepe-rate evaluation of the effect of the above mentioned parameters. The vali-dity of the models is discussed onthe bases of the comparison of the step and frequency responses of models with experimental results.