公开(公告)号：EP1309078B1

公开(公告)日：2005-08-03

申请号：EP01830678.7

申请日：2001-10-31

Applicant: STMicroelectronics S.r.l.

Inventor： Boscolo, Michele ,  Brambilla, Massimiliano ,  Galbiati, Ezio

IPC: H02P6/18

CPC classification number: G11B19/20 ,  H02P6/182 ,  H02P6/185 ,  H02P6/22

公开(公告)号：EP1309078A1

公开(公告)日：2003-05-07

申请号：EP01830678.7

申请日：2001-10-31

Applicant: STMicroelectronics S.r.l.

Inventor： Boscolo, Michele ,  Brambilla, Massimiliano ,  Galbiati, Ezio

IPC: H02P6/18

CPC classification number: G11B19/20 ,  H02P6/182 ,  H02P6/185 ,  H02P6/22

Abstract: The present invention refers to a method for detecting the position of a rotor of a DC motor and to the relative circuit.
According to an embodiment the method for detecting the position of a rotor of a DC motor (SM) with N phases having a plurality of windings (AV1, AV2, AV3), comprising the steps of: connecting at least two of said windings (AV1, AV2, AV3) between a first (Vcc) and a second (Gnd) prefixed voltage according to a first current path for a prefixed time (Tact); allowing the current stored in said two windings (AV1, AV2, AV3) to discharge through a second current path; comparing the voltage at the ends of one of said two windings (AV1, AV2, AV3) with a third prefixed voltage and providing a control signal when said voltage is smaller in absolute value than said third prefixed voltage; performing the above steps for each of the winding (AV1, AV2, AV3) couples of said motor (SM); detecting the position of said rotor on the base of the control signals obtained.

Abstract translation: 本发明涉及一种用于检测直流电动机的转子和相对电路的位置的方法。 根据一个实施例，用于检测具有多个绕组（AV1，AV2，AV3）的N相的直流电动机（SM）的转子的位置的方法包括以下步骤：将至少两个所述绕组（AV1 ，AV2，AV3），根据用于预定时间（Tact）的第一电流路径的第一（Vcc）和第二（Gnd）预定电压; 允许存储在所述两个绕组（AV1，AV2，AV3）中的电流通过第二电流路径放电; 将所述两个绕组（AV1，AV2，AV3）之一的端部处的电压与第三预定电压进行比较，并且当所述电压的绝对值小于所述第三预定电压时提供控制信号; 对所述电动机（SM）的绕组（AV1，AV2，AV3）对中的每一个执行上述步骤; 在所获得的控制信号的基础上检测所述转子的位置。