Invention Grant
- Patent Title: Inductive position sensor with offset compensation
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Application No.: US17267162Application Date: 2019-09-11
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Publication No.: US11435205B2Publication Date: 2022-09-06
- Inventor: Jean-Philippe Ferreira Da Cunha , Rainer Möller
- Applicant: ELECTRICFIL AUTOMOTIVE
- Applicant Address: FR Beynost
- Assignee: ELECTRICFIL AUTOMOTIVE
- Current Assignee: ELECTRICFIL AUTOMOTIVE
- Current Assignee Address: FR Beynost
- Agency: Ladas & Parry LLP
- Agent Malcolm J. MacDonald
- Priority: FR1858180 20180912
- International Application: PCT/FR2019/052102 WO 20190911
- International Announcement: WO2020/053525 WO 20200319
- Main IPC: G01D5/20
- IPC: G01D5/20 ; G01D5/22

Abstract:
An inductive position sensor for determining the position of a moving body along a linear or rotary path (F), including: a moving target (3) adapted to modify an electromagnetic field; a fixed circuit board (5) extending along a limited portion and including a primary coil (7) surrounding two secondary coils (8, 9) having substantially identical lengths (L) and having shapes of sine and cosine functions; a current generator (11) to create an inductive coupling modulated by the position of the target; a detector (13) of the linear or angular position of the target; and a system for balancing the coupling between the primary coil (7) and the secondary coils (8, 9) to compensate for the measurement offset induced by the proximity between the secondary coils (8, 9) and the end segments (7b) of the primary coil (7).
Public/Granted literature
- US20210302206A1 INDUCTIVE POSITION SENSOR WITH OFFSET COMPENSATION Public/Granted day:2021-09-30
Information query
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