Invention Grant
- Patent Title: Electric power steering apparatus
- Patent Title (中): 电动助力转向装置
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Application No.: US14131809Application Date: 2012-09-03
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Publication No.: US09278708B2Publication Date: 2016-03-08
- Inventor: Satoh Kouichi , Keiji Kashimoto , Haruhiko Kamiguchi
- Applicant: Satoh Kouichi , Keiji Kashimoto , Haruhiko Kamiguchi
- Applicant Address: JP Tokyo
- Assignee: NSK LTD.
- Current Assignee: NSK LTD.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2012-022811 20120206; JP2012-022814 20120206; JP2012-024209 20120207
- International Application: PCT/JP2012/072356 WO 20120903
- International Announcement: WO2013/118339 WO 20130815
- Main IPC: B62D5/04
- IPC: B62D5/04 ; H02P29/02 ; H02P6/00

Abstract:
An electric power steering apparatus for generating a PWM signal based on a calculated steering assist command value, PWM-controlling a motor via a motor drive circuit including switching elements, and assist-controlling a steering system that a motor relay is inserted between the motor drive circuit and the motor, includes a steering status detecting section that detects a steering status of a steering wheel, outputs a longtime steering holding signal when detecting that the steering status is a longtime steering holding status, and outputs a normal steering signal when detecting that the steering status is a normal steering status, and a motor current control section that determines a motor current control value for controlling a motor current flowing in the motor relay in accordance with the longtime steering holding signal or the normal steering signal.
Public/Granted literature
- US20140195119A1 POWER STEERING APPARATUS Public/Granted day:2014-07-10
Information query
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