Method and apparatus for calibrating a torque measurement

According to one aspect of the invention, a method for calibrating a torque measurement for a rotatable object (114) is disclosed, wherein the method includes coupling the rotatable object (114) to a structure (202), the structure including a member (208,210) extending along a length of a surface of...

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Bibliographische Detailangaben
Hauptverfasser:	FARR LL., LAWRENCE BROWN, SUE, PETER PING-LIANG, WILSON, DEREK RAY
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TESTING
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Beschreibung
Zusammenfassung:	According to one aspect of the invention, a method for calibrating a torque measurement for a rotatable object (114) is disclosed, wherein the method includes coupling the rotatable object (114) to a structure (202), the structure including a member (208,210) extending along a length of a surface of the rotatable object (114), coupling the rotatable object to an adapter (204) and applying a known torque to the rotatable object (114) via the adapter (204). The method also includes measuring a first rotational displacement via a first sensor (214) coupled to the member (208,210) at a first axial location of the rotatable object (114), measuring a second rotational displacement via a second sensor (220) coupled to the member at a second axial location of the rotatable object (114) and determining first and second angular displacements of the rotatable object (114) based on the first and second rotational displacements.