Steering failure alarm

An apparatus for providing the operator of a marine vessel with an alarm when when a malfunction occurs in the steering system of the vessel. The apparatus utilizes a closed loop simulator to simulate the rudder position, and a comparison of the simulated rudder position to the actual rudder activat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WESNER, CHARLES R, SPURGIN, WILLIAM T
Format:	Patent
Sprache:	eng
Schlagworte:	ALARM SYSTEMS CONTROLLING MARINE PROPULSION OR STEERING ORDER TELEGRAPHS PERFORMING OPERATIONS PHYSICS REGULATING RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS SIGNALLING SIGNALLING OR CALLING SYSTEMS SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TRANSPORTING
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Beschreibung
Zusammenfassung:	An apparatus for providing the operator of a marine vessel with an alarm when when a malfunction occurs in the steering system of the vessel. The apparatus utilizes a closed loop simulator to simulate the rudder position, and a comparison of the simulated rudder position to the actual rudder activates the alarm when a predetermined threshold value has been exceeded. Appropriate time delays during which the alarm is disabled make the apparatus adaptable for use with steering systems having a steering gear which has rate inconstancy, and a shaping circuit makes the apparatus adaptable for use with steering systems having a steering gear which has static positional nonlinearity.