Servovalve actuation
AssigneeMoog Controls, Inc.
InventorsDhinesh Sangiah, Paul Guerrier, Gary Powers
Life of this patent
Estimating the term…
Abstract
A servovalve pilot stage (100) comprises a piezoelectric actuator (130) joined to a flow guide (132) and feedback wire (136) for connection to a main stage spool valve. The flow guide (132) and the piezoelectric actuator (130) may be integral.
Claims19
A deflector jet servovalve pilot stage assembly comprising:
- a housing,
- an amplifier having an amplifier segment defining an amplifier segment orifice,
- a multilayered piezoelectric actuator being mounted to the housing at a first end and having a flow guide mounted at a second end, which flow guide is arranged for movement within the amplifier segment orifice.
A deflector jet servovalve comprising:
- a pilot stage assembly including:
- a housing,
- an amplifier having an amplifier segment defining an amplifier segment orifice, and
- a multilayered piezoelectric actuator being mounted to the housing at a first end and having a flow guide mounted at a second end, which flow guide is arranged for movement within the amplifier segment orifice, and
- a main stage comprising a spool,
- wherein movement of the spool is controlled by pressures within the amplifier segment orifice.
A piezoelectric actuator for a deflector jet servovalve pilot stage having a flow guide extending from a first end, the flow guide comprising a base portion integral therewith, the base portion extending into the piezoelectric actuator.
(canceled)
A method of manufacture of a piezoelectric actuator for a pilot stage of a deflector jet servovalve comprising the steps of:
- providing a flow guide having an integral base portion extending therefrom,
- depositing piezoelectric material onto the flow guide to form a piezoelectric actuator.
Dependencies are inferred from the claim text.