Dynamic pulse-width modulation motor control and medical device incorporating same

摘要

Apparatus are provided for motor control systems and related medical devices. In one embodiment, a control system includes a motor having a rotor, a sensor to obtain a measured displacement that is influenced by rotation of the rotor, and a control module coupled to the sensor. The control module adjusts a duty cycle for a modulated voltage applied to the motor in response to a difference between an expected displacement and the measured displacement. The expected displacement is influenced by or otherwise corresponds to a commanded rotation of the rotor.

主权项

1. A method of controlling a motor, the method comprising:
applying a modulated voltage to the motor to produce a commanded rotation of a rotor of the motor; determining an expected displacement based on the commanded rotation; obtaining a measured displacement influenced by rotation of the rotor in response to applying the modulated voltage to the motor to produce the commanded rotation; and adjusting a duty cycle of the modulated voltage in response to a difference between the expected displacement and the measured displacement.