Invention Grant
- Patent Title: Electric power steering apparatus
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Application No.: US14786410Application Date: 2014-04-07
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Publication No.: US09809246B2Publication Date: 2017-11-07
- Inventor: Takahiro Tsubaki , Tamotsu Oumi
- Applicant: NSK LTD.
- Applicant Address: JP Tokyo
- Assignee: NSK LTD.
- Current Assignee: NSK LTD.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2013-090650 20130423; JP2014-075257 20140401
- International Application: PCT/JP2014/060093 WO 20140407
- International Announcement: WO2014/175052 WO 20141030
- Main IPC: B62D5/04
- IPC: B62D5/04

Abstract:
[Problem]An object of the present invention is to provide an electric power steering apparatus that suppresses a handle vibration (noisy sound) being caused by a handle inertia and a spring nature of a torsion bar and improves a steering feeling, without changing of the gain of the PI control.[Means for solving the problem]The present invention is an electric power steering apparatus that assist-controls a steering by driving a motor with a current command value calculated based on at least a steering torque, comprising a vibration-damping compensating section that calculates a vibration-damping compensation command value for suppressing a vibration of a handle based on a motor velocity of the motor, wherein the current command value is corrected by the vibration-damping compensation command value.
Public/Granted literature
- US20160059885A1 ELECTRIC POWER STEERING APPARATUS Public/Granted day:2016-03-03
Information query
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