Motor drive controller, control method for motor drive controller, control program for motor drive controller, and method for determining number of divisions of basic step angle
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United States of America Patent
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Nov 5, 2019
Grant Date -
Sep 13, 2018
app pub date -
Mar 6, 2018
filing date -
Mar 8, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A motor drive controller capable of taking measures against vibration or noise of a motor is provided. The motor drive controller configured to drive a stepping motor in microstepping mode controls the number of PWM (Pulse Width Modulation) cycles contained in one microstep cycle. More specifically, the number of PWM cycles contained in one microstep cycle is controlled so that a vibration contained in a current waveform determined by the number of PWM cycles contained in one microstep cycle does not approximate the natural frequency of the stepping motor.
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