三方向形高速電磁弁の電子油圧ディジタル制御

概要

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Micro-computers have some effects on electro-hydraulic control strategies. The electro-hydraulic pulse control simplifies both electric amplifier and valve configurations. It is necessary for the valve to convert electric pulse signals to hydraulic pulse flows as quickly as possible. For converting to a train of hydraulic pulse flows, 2-or 3-way on/off valves are available, but there are some problems on hydro-dynamic flow forces and correct estimation of magnetic flux leak and saturation. We have already succeeded to switch a high-pressure 2-way on/off valve within 3.5 ms by the flow force compensation and the FEM analysis of magnetic field. As the next stage, we try to develop a 3-way middle-pressure on/off valve which can control flow rates of 8 L/min at 7 MPa pressure difference within 3 ms. In this paper, characteristics of this valve and the position control servocylinder controlled by a pair of 3-way valves are discussed.
一般社団法人日本機械学会の論文
1984-10-25