Title:
電動パワーステアリング装置
Document Type and Number:
Japanese Patent JP6410001
Kind Code:
B2
Abstract:
[Problem] An object of the present invention is to provide an electric power steering apparatus that enables more precise estimation of a coil temperature by considering a heat transfer phenomenon between a control substrate and a poly-phase coil in addition to a heat transfer phenomenon between respective phases of the coil. [Means for solving the problem] An electric power steering apparatus that comprises a control substrate that controls a poly-phase motor, comprises a temperature sensor that detects a substrate temperature of the control substrate; and a coil temperature estimating section that estimates coil temperatures of respective phases of the poly-phase motor by a motor current of the phase and the substrate temperature based on a heat transfer phenomenon between the respective phases that is caused by a difference in temperature between coils of the respective phases and a heat transfer phenomenon between the coil and the control substrate.
Inventors:
Takahiro Tsubaki
Tomohiro Miura
Takashi Sunaga
Nobuaki Kogure
Tomohiro Miura
Takashi Sunaga
Nobuaki Kogure
Application Number:
JP2018522154A
Publication Date:
October 24, 2018
Filing Date:
July 04, 2017
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
B62D6/00; B62D5/04; H02P29/64
Domestic Patent References:
| JP200989531A | ||||
| JP2003134869A |
Attorney, Agent or Firm:
Yuzo Agata
Shinji Koga
Yoshiaki Kanno
Shinji Koga
Yoshiaki Kanno