DETERMINING THE ROTATIONAL DIRECTION OF A RESOLVER

    公开(公告)号:EP3822643A2

    公开(公告)日:2021-05-19

    申请号:EP20207030.6

    申请日:2020-11-11

    IPC分类号: G01P13/04 G01P3/488 G01D5/20

    摘要: Provided are embodiments for a circuit including a resolver (100) having a primary winding (120) and a set of secondary windings (130, 140), wherein the resolver has a resolver shaft (110), and a polarity detection circuit (406) coupled to the resolver. The circuit can also include a synchronizer circuit (408) coupled to the polarity detection circuit (406), wherein the synchronizer circuit synchronizes signals from the positive polarity detection circuit; and a controller (450) configured to determine a direction of the resolver shaft using an output of the synchronizer circuit. Also provided are embodiments of a method for determining the resolver rotation direction using non-analog means.