油圧流量制御弁の特性評価モデル

概要

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Traditionally, modeling of oil hydraulic devices depends too much upon classical 'hydraulics' and lacks in experimental verification. From a critical standpoint against this tradition, a measurement-based modeling was attempted for an oil hydraulic flow control valve. First the steady-state characteristics of the two essential components, that is, a throttle and a spool valve were thoroughly measured. With those experimental data, the new empirical equations expressing the static relationships between the differential pressure, the flow rate and the opening area were found out for both components. The static model including these relationships proved effective in predicting steady state behaviors of the flow control valve. The dynamic model was also formulated on the basis of the static model with kinetic inertial terms added. The experiments were carried out by transient-and frequency-response methods in which unsteady differential pressures, flow rates and spool displacements were all measured, proving the model's validity.
一般社団法人日本機械学会の論文
2001-06-25