Motor drive control device
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United States of America Patent
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Aug 25, 2015
Grant Date -
Nov 21, 2013
app pub date -
Mar 27, 2013
filing date -
May 18, 2012
priority date (Note) -
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Abstract
A motor drive control device of an electric power-assisted vehicle that has a gear shifter and a motor, and in which a first ratio of the number of drive rotations in the motor to the number of drive rotations of a pedal changes based on changes in a gear ratio in the gear shifter, includes: a gear ratio obtaining part that obtains the gear ratio of the gear shifter; and a calculating part that calculates an assist torque, which is a target value for a drive torque of the motor, from the pedal input torque based on the gear ratio obtained by the gear ratio obtaining part.
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