Calibration technique for electric motor

摘要

A method for calibrating electric motors using current-sensing only is disclosed. The method involves applying a voltage in pulse-width modulated fashion for a short time to insure motion of the motor. Following startup, varying voltages are pulsed to the motor, switching polarity at regular intervals. The current generated in the motor by each level of voltage is measured. The data generated provide a reasonably accurate view of the properties of the motor, allowing for more precise velocity control.