公开(公告)号：US10974596B2

公开(公告)日：2021-04-13

申请号：US16871977

申请日：2020-05-11

Applicant: Stoneridge Control Devices, Inc.

Inventor： Susan M. Barnabo ,  John Sachs

IPC: B60K23/08 ,  F16H25/20 ,  F16H1/28 ,  F16H57/04 ,  B60K23/04 ,  F16D11/14 ,  G01D5/14 ,  B60Q3/70 ,  F16D11/00

Abstract: A gearbox operating system shifts between 2-wheel and 4-wheel drive. The system includes a reversible motor, and a reduction gear train that is configured to be driven by the motor to move a plunger between extended and retracted plunger positions that shifts gears. A printed circuit board has at least two Hall effect sensing circuits. A magnet is carried by the reduction gear train and is rotationally movable relative to the Hall effect sensing circuits. A first Hall effect sensing circuits provides a first output signal indicative of the extended plunger position. A second Hall effect sensing circuits provides a second output signal that is indicative of the retracted plunger position. A controller monitors the two Hall effect sensing circuits to determine if a desired plunger position has been achieved and trigger an error code if the desired plunger position has not been achieved within a predetermined response time.