Title:
STEERING CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/005937
Kind Code:
A1
Abstract:
A steering control device according to the present invention has: a first magnet that is provided to a first end part, among the first end part and a second end part being a pair of end parts of a motor shaft, and that has an N pole and an S pole arranged side by side in the circumferential direction with respect to the rotary axis of the motor shaft; a first gear that is provided on the same side as the first end part with respect to a motor rotor in the direction of the rotary axis of the motor shaft, is rotatable in conjunction with the rotation of a steering shaft, and is provided with a first gear body part and a plurality of first teeth, the plurality of first teeth being provided to the outer circumference of the first gear body part; a second gear that is provided on the same side as the first end part with respect to the motor rotor in the direction of the rotary axis of the motor shaft, is rotatable in conjunction with the rotation of the steering shaft, and is provided with a second gear body part and a plurality of second teeth, the plurality of second teeth being provided to the outer circumference of the second gear body part and the number of second teeth being not able to divide or be divided by the number of the first teeth; a second magnet that is provided to the second gear body part and has a first N pole and a first S pole which are a pair of magnetic poles; a first magnetic sensor that is provided at a position opposing the first magnet and that detects the rotation position of the motor shaft on the basis of a change of magnetic field of the first magnet, the change being accompanied by the rotation of the first magnet; and a second magnetic sensor that is provided at a position opposing the second magnet and that detects the rotation position of the second gear on the basis of a change of magnetic field of the second magnet, the change being accompanied by the rotation of the second magnet.
Inventors:
ISOBE SHINICHI (JP)
Application Number:
PCT/JP2020/022491
Publication Date:
January 14, 2021
Filing Date:
June 08, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
H02K7/116; B62D5/04; G01B7/30; H02K11/215
Foreign References:
| JP2005201761A | 2005-07-28 | |||
| JP2016205948A | 2016-12-08 | |||
| JP2013091345A | 2013-05-16 | |||
| JP2013150481A | 2013-08-01 | |||
| JP2019082358A | 2019-05-30 | |||
| JP2018177005A | 2018-11-15 |
Attorney, Agent or Firm:
YAMAMOTO, Osamu et al. (JP)
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