Yasunaga Corporation

Shinji Kuru

A hydraulic system includes position sensors that are provided together with solenoid valves in fluid passages extending between a working fluid source and hydraulic actuators. Each position sensor is comprised of two gears disposed in the fluid passage so as to be rotatable by the flow of working fluid, and two sensing elements each disposed to face either one of the gears. A controller determines the operating position of each actuator based on sensor outputs that are out of phase with each other and are generated by the sensing elements each time the gears rotate for a predetermined angle.

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Mie, Japan

Shinji Kuru