電気粘性流体を用いた液圧制御弁 : 圧力制御弁への応用

概要

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Electro-rheological (ER) fluids change their apparent viscosity according to the electric field strength. Using ER fluids, it is possible to directly interface between electric signals and fluid power without moving parts. This study aims at practical applications of ER fluids to fluid power systems, especially to control valves (ER valves). In this paper, first, static characteristics of a two-port ER valve is experimentally clarified to obtain basic characteristics of ER valves. Secondly, making the best use of the features of the ER valve, a three-port pressure control valve using ER fluids is proposed and manufactured. Static and dynamic characteristics of the manufactured pressure control valve are measured. Thirdly, using the manufactured pressure control valve, a one-link manipulator with FHA (Flexible Hydraulic Actuator) is driven. As a result, it is experimentally confirmed that the pressure control valve using ER fluids is applicable to use in driving actuators.
1996-09-25