Motor unit
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United States of America Patent
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-
Feb 23, 2021
Grant Date -
Oct 3, 2019
app pub date -
Feb 12, 2019
filing date -
Mar 30, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A motor unit includes a motor, a controller that outputs a pulse signal, a driver that supplies a drive current to the motor based on the pulse signal, and a detector that determines an actual rotation number of the motor. The controller includes calculators that calculate control values of a rotation number of the motor, and control stages. The controller also includes a pulse generator that selects one of the control values calculated by the calculators to generate the pulse signal based on the control value selected, at each of the control stages.
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