公开(公告)号：US20180245675A1

公开(公告)日：2018-08-30

申请号：US15756215

申请日：2016-08-24

Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG

Inventor： Markus DIETRICH ,  Laszlo MAN ,  Peter GREB

IPC: F16H25/20 ,  F15B7/08 ,  F16D23/12 ,  G01D5/14

CPC classification number: F16H25/2015 ,  F15B7/08 ,  F16D23/12 ,  F16D48/064 ,  F16D2023/123 ,  F16D2500/1024 ,  F16D2500/3021 ,  F16H2025/2078 ,  G01D5/145

Abstract: An angle-measuring device is provided for a rotationally-driven linear actuator, which can be implemented into a clutch actuator. A rotor element has an axis of rotation and rotates concentrically with a rotor of a rotary drive for an axially movable linear actuator element. A measurement magnet arrangement is fixed relative to the rotor element and has a polarization. The polarization is oriented in such a way that the magnetic field lines can change with a rotation of the rotor element so as to enable the angle to be precisely determined from at least one measurement position. At one location, a 360-degree sensor is provided for measuring angular positions based on the measurement magnet arrangement. At another location, a revolution-counting sensor is provided for counting a number of revolutions carried out based on the measurement magnet arrangement.