Title:
MOTOR POSITION DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/058697
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a motor position detection system capable of expanding the detection area. In a motor (300) comprising a coil (301) and a driving magnet (302) that applies a driving magnetic field to the coil (301), a magnetized surface (302a) along the magnetization direction of the driving magnet (302) faces the coil surface (301a), and the drive direction is along the magnetization direction. The drive direction is the direction of displacement of one of the coil (301) and the driving magnet (302) with respect to the other. A motor position detection system (200) comprises a magnetic sensor (100) and a processing circuit (201). The magnetic sensor (100) includes a substrate (73), a wiring layer (W1) arranged on a substrate surface (73a) that is the surface of the substrate (73), and a biasing magnet (5) applying a bias magnetic field to the wiring layer (W1). The magnetic sensor (100) is arranged so that the substrate surface (73a) is parallel to the magnetization direction and perpendicular to the magnetized surface (302a).
Inventors:
ONAKA KAZUHIRO
ICHINOMIYA NORITAKA
ICHINOMIYA NORITAKA
Application Number:
PCT/JP2022/037329
Publication Date:
April 13, 2023
Filing Date:
October 05, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01D5/245; H02K11/215
Domestic Patent References:
| WO2011115098A1 | 2011-09-22 |
Foreign References:
| JP2012063203A | 2012-03-29 | |||
| JP2012037463A | 2012-02-23 | |||
| JP2012042259A | 2012-03-01 | |||
| JP2016109889A | 2016-06-20 | |||
| US10302456B1 | 2019-05-28 | |||
| JP2003318459A | 2003-11-07 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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