公开(公告)号：US20220065666A1

公开(公告)日：2022-03-03

申请号：US17405232

申请日：2021-08-18

Applicant: Ewellix AB

Inventor： Christoph Riehl ,  Urs Kunz

IPC: G01D5/241 ,  H02K7/06 ,  H02K11/21

Abstract: A position sensor for a linear actuator, a production method for a position sensor, a linear actuator with a position sensor, and a method for determining a position of a linear actuator. The position sensor has a capacitor arrangement and a data processing device. The capacitor arrangement has a first capacitor element and a second capacitor element arranged to be movable relative to the first capacitor element and designed to generate a capacitive signal. A data processing device is configured to determine the position of the second capacitor element relative to the first capacitor element based on the capacitive signal. The second capacitor element is made of an electrically conductive polymer.

公开(公告)号：US20240011803A1

公开(公告)日：2024-01-11

申请号：US18336483

申请日：2023-06-16

Applicant: Ewellix AB

Inventor： Christoph Riehl ,  Urs Kunz

IPC: G01D5/241

CPC classification number: G01D5/2415

Abstract: A position transducer, a linear actuator and a method for determining a position of two components in relation to each other. The position transducer having measuring unit and a first, second, and third electrode assembly. The third electrode assembly capacitively couples the first and the second electrode assemblies to each other and is movable in relation thereto. The measuring unit is electrically conductively connected to the first electrode assembly by a first line assembly and to the second electrode assembly by a second line assembly. The measuring unit is configured to emit at least one excitation signal via the first line assembly and receive at least one readout signal via the second line assembly. The measuring unit is also designed to determine, based on readout signal, a position of the third electrode assembly in relation to the first and the second electrode assemblies.

公开(公告)号：US11680827B2

公开(公告)日：2023-06-20

申请号：US17405232

申请日：2021-08-18

Applicant: Ewellix AB

Inventor： Christoph Riehl ,  Urs Kunz

IPC: G01D5/241 ,  H02K11/21 ,  H02K7/06

CPC classification number: G01D5/2412 ,  H02K7/06 ,  H02K11/21

Abstract: A position sensor for a linear actuator, a production method for a position sensor, a linear actuator with a position sensor, and a method for determining a position of a linear actuator. The position sensor has a capacitor arrangement and a data processing device. The capacitor arrangement has a first capacitor element and a second capacitor element arranged to be movable relative to the first capacitor element and designed to generate a capacitive signal. A data processing device is configured to determine the position of the second capacitor element relative to the first capacitor element based on the capacitive signal. The second capacitor element is made of an electrically conductive polymer.