Drive of rotating device based on a combination of the rotation speed detection of the rotation speed detection and without the sensor according to the sensor

摘要

Some of the embodiments of the present disclosure, sensors, and are generated in the rotating device Conversely, based on the electromagnetic force has to be based on the steps of detecting the rotational speed of the rotary device, the rotational speed, which is detected using the detected rotation speed, or (ii) reverse electromagnetic force using (i) sensors Te, a method comprising the the steps of driving the rotating device.