公开(公告)号：US20040154411A1

公开(公告)日：2004-08-12

申请号：US10721766

申请日：2003-11-25

Applicant: STMicroelectronics S.r.I.

Inventor： Marco Viti

IPC: G01L003/02

CPC classification number: H02P6/182

Abstract: A method for detecting the angular position of a rotor in a brushless electric motor, of the type in which the emission of a polarity signal of the back electromotive force by a detection circuitry associated with the motor, includes the using a bi-directional counter for counting the residence time difference of the logic states null0null and null1null at the output of the detection circuitry. The method is aimed at improving the detection of the instantaneous position of the rotor in a brushless motor through the detection of the zero-crossing signal.

Abstract translation: 一种用于检测无刷电动机中的转子的角位置的方法，其中通过与电动机相关联的检测电路发射反电动势的极性信号的类型包括使用双向计数器 计数在检测电路的输出处的逻辑状态“0”和“1”的停留时间差。 该方法旨在通过检测过零信号来改善无刷电动机中转子的瞬时位置的检测。