Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
2008-12-18
2009-11-24
Aurora, Reena (Department: 2858)
Electricity: measuring and testing
Magnetic
Displacement
C324S207260
Reexamination Certificate
active
07622914
ABSTRACT:
Apparatus for detecting vibration of an object adapted to rotate includes one or more vibration processors selected from: a direction-change processor adapted to detect changes in a direction of rotation of the object, a direction-agreement processor adapted to identify a direction of rotation of the object in at least two channels and identify an agreement or disagreement in direction of rotation identified by the at least two channels, a phase-overlap processor adapted to identify overlapping signal regions in signals associated with the rotation of the object, and a running mode processor adapted to identify an unresponsive output signal from at least one of the at least two channels. A method for detecting the vibration of the object includes generating at least one of a direction-change output signal with the direction-change processor, a direction-agreement output signal with the direction-agreement processor, a phase-overlap output signal with the phase-overlap processor, and a running-mode-vibration output signal with the running-mode processor, each indicative of the vibration the object.
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Bailey James M.
Doogue Michael C.
Towne Jay M.
Allegro Microsystems Inc.
Aurora Reena
Daly, Crowley & Mofford & Durkee, LLP
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