Actuator control system

The invention provides a method and a system for moving an element, e.g. a rudder of a ship or a wheel of a vehicle. The element is moved by a hydraulic fluid. According to the invention, an operator indicates a desired movement, and in accordance with the desired movement, at fluid is provided from...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KRISTENSEN JOHN, JENSEN KJELD BUUS, CROW STEVE, ALBRECHT PREBEN
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 LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS LIGHTING MARINE PROPULSION OR STEERING MECHANICAL ENGINEERING MOTOR VEHICLES PERFORMING OPERATIONS RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TRAILERS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides a method and a system for moving an element, e.g. a rudder of a ship or a wheel of a vehicle. The element is moved by a hydraulic fluid. According to the invention, an operator indicates a desired movement, and in accordance with the desired movement, at fluid is provided from at least three fluid providers each providing a share of the fluid in parallel streams and only considering the desired movement not the shares provided by the other fluid providers. The invention allows continuation of a steering task even if one fluid provider is disabled, and the invention allows the continuation even without having to notice that one provider is disabled. Accordingly, the invention provides an improvement and simplification relative to the known hydraulic steering systems.