| 摘要 |
<p>An efficient and less critical start-up procedure for a multiphase brushless motor to be accelerated until reaching a certain speed, by determining the starting position of the rotor, forcing a drive current in the phase windings of the motor for an established period of time according to a switching sequence for inducing a rotation in the desired direction, sensing the position reached by the rotor at the end of each excitation phase, and eventually interrupting the start-up procedure when the established speed has been reached or exceeded includes the steps of increasing or reducing the duration of the next phase of excitation and modifying the switching sequence depending on the number of consecutive times in which the current position is found to be the same or different from the previously detected position, respectively. <IMAGE></p> |
