Control apparatus for hydraulic servo units

Details Control apparatus for hydraulic servo units Control apparatus for hydraulic servo units

F - Mech Eng,Light,Heat,Weapons

16

H

138/41.1

F16H 61/40 (2006.01) F16H 61/42 (2006.01)

Patent

CA 1305646

ABSTRACT OF THE DISCLOSURE In a hydraulic servo unit comprising a cylinder and a piston slidably inserted therein, the cylinder chamber being divided by a piston portion into a rod-side cylinder chamber and a head-side cylinder chamber a control apparatus for the hydraulic servo unit comprises a first hydraulic line connecting the rod-side cylinder chamber with the hydraulic pressure source which supplies working fluid of predetermined pressure, a second hydraulic line connecting the head-side cylinder chamber with the first hydraulic line through a first solenoid valve of duty-ratio-control, a drain hydraulic line connecting the head-side cylinder chamber with drain through a second solenoid valve of duty-ratio-control.

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