Motor Assembly with Sensor Target on Motor Rotor and Method of Forming Same
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United States of America Patent
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N/A
Issued Date -
Mar 25, 2010
app pub date -
Sep 22, 2008
filing date -
Sep 22, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A motor assembly is provided that includes a rotor having a plurality of coaxial rotor laminations, a conductive end ring adjacent the rotor laminations that establishes an axial end of the rotor; and a target member supported by the end ring and rotatable with the rotor. A sensor is operable to monitor, for example, speed and/or angular position of the target member as the rotor rotates. A method of forming a motor assembly includes providing a sensor target and a sensor operable to determine the position of the sensor target. The method includes connecting the sensor target with a motor rotor end ring such that the sensor target is supported by the motor rotor end ring for common rotation therewith and may be sensed by the sensor. Connecting the sensor target to the end ring may be by overcasting the sensor target onto the motor rotor end ring.
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