Motor temperature sensor system and method to determine motor performance
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United States of America Patent
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Jan 23, 2007
Issued Date -
N/A
app pub date -
Jun 6, 2005
filing date -
Aug 5, 2003
priority date (Note) -
Expired
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Abstract
An electric motor system includes an electric motor, a temperature sensor mounted therein capable of measuring a local temperature and generating a temperature related signal, and a processor configured to calculate an actual temperature of a rotor magnet from the temperature related signal, and an actual output torque from the actual rotor magnet temperature. A method for determining the actual output torque of a motor includes sensing a temperature within the motor, calculating a rotor magnet temperature from the sensed temperature, and calculating the actual output mechanical torciue from the rotor magnet temperature.
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