Digital servo valve system

Details Digital servo valve system Digital servo valve system

F - Mech Eng,Light,Heat,Weapons

15

B

137/95

F15B 13/04 (2006.01) F15B 9/03 (2006.01) F15B 13/044 (2006.01) G05B 19/23 (2006.01) G05B 19/414 (2006.01)

Patent

CA 2005253

ABSTRACT OF THE DISCLOSURE A novel digital servo valve system for use in displacing an actuator is capable of operating either in closed or open loop mode. The system includes a con- troller that compares computed values of actuator parame- ters with preselected parameter values and iteratively de- termines therefrom command signals for the servo valve. The servo valve is characterized by a ball screw mechanism that eliminates mechanical backlash and a torsion bar which increases radial and angular compliance. A servo valve provided according to the present invention also displays reduced flow forces using a simple, inexpensive valve body in combination with a uniquely configured dis- placeable spool.

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