DRIVING A ROTATING DEVICE BASED ON A COMBINATION OF SPEED DETECTION BY A SENSOR AND SENSOR-LESS SPEED DETECTION

摘要

Some of the embodiments of the present disclosure provide a method comprising detecting, based on a sensor and a back electromagnetic force generated in a rotating device, a speed of the rotating device; and based on (i) the speed detected using the sensor or (ii) the speed detected using the back electromagnetic force, driving the rotating device.