TWO-STAGE SERVO VALVE

A two-stage servo valve comprising a first drive stage and a second fluid transfer stage. The fluid transfer stage includes a housing having a plurality of ports and a spool axially moveable within an axial cavity defined within the housing to control flow of fluid between the plurality of ports acc...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Jaskiewicz, Zbigniew, MASTALERZ, Kamil
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A two-stage servo valve comprising a first drive stage and a second fluid transfer stage. The fluid transfer stage includes a housing having a plurality of ports and a spool axially moveable within an axial cavity defined within the housing to control flow of fluid between the plurality of ports according to the axial position of the spool, wherein the drive stage is configured to cause axial movement of the spool. The housing has three ports, a first port being a supply port fluidly connected to a second port, being a control port, via a supply channel (sc) and a first control channel (cc1) via the spool cavity, and a third port being a return port fluidly connected to the control port via a return channel (rc) and a second control channel (cc2) via the spool cavity.