Title:
TORQUE DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/068068
Kind Code:
A1
Abstract:
A first magnetism detection unit (61) in a torque sensor of this torque detection system has, in a state where torque is not generated, an overlap with a magnetic pole of a magnet (30), the overlap being, for example when the N pole is projected in the radial direction therefrom, between the magnetic pole and the magnet (30) having projected same. Furthermore, a second magnetism detection unit (62) has, in a state where torque is not generated, an overlap with a magnetic pole different from the magnetic pole of a magnet (30) overlapping the first magnetism detection unit (61), the overlap being, for example when the S pole is projected in the radial direction therefrom, between the magnetic pole and the magnet (30) having projected same. A motor control device corresponding to a calculation unit of the torque detection system calculates a sum of a value regarding the intensity of a magnetic field detected by the first magnetism detection unit (61) and a value regarding the intensity of a magnetic field detected by the second magnetism detection unit (62). In addition, the motor control device calculates a steering torque on the basis of the calculated sum.
Inventors:
UCHIDA KEISUKE (JP)
TAKASAKA SEIJI (JP)
TAKASAKA SEIJI (JP)
Application Number:
PCT/JP2022/037505
Publication Date:
April 27, 2023
Filing Date:
October 06, 2022
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01L3/10
Foreign References:
| JP2004309463A | 2004-11-04 | |||
| JP2013246035A | 2013-12-09 | |||
| JP2019120671A | 2019-07-22 | |||
| JP2018197738A | 2018-12-13 | |||
| JP2013195108A | 2013-09-30 | |||
| JP2009192248A | 2009-08-27 | |||
| US10330542B1 | 2019-06-25 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
Download PDF: