Invention Grant
US08554412B2 Electric power steering apparatus, control method thereof and program
有权
电动助力转向装置及其控制方法和程序
- Patent Title: Electric power steering apparatus, control method thereof and program
- Patent Title (中): 电动助力转向装置及其控制方法和程序
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Application No.: US13055316Application Date: 2010-06-16
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Publication No.: US08554412B2Publication Date: 2013-10-08
- Inventor: Narimasa Hosoya , Shunya Senda , Fumiaki Ishikawa
- Applicant: Narimasa Hosoya , Shunya Senda , Fumiaki Ishikawa
- Applicant Address: JP Saitama
- Assignee: Showa Corporation
- Current Assignee: Showa Corporation
- Current Assignee Address: JP Saitama
- Agency: Morgan, Lewis & Bockius LLP
- Priority: JP2009-281343 20091211
- International Application: PCT/JP2010/060210 WO 20100616
- International Announcement: WO2011/070812 WO 20110616
- Main IPC: B62D5/04
- IPC: B62D5/04
Abstract:
Provided are: an electric motor that applies steering assist force to a steering wheel; a target current determination unit 25 that calculates a target current to be supplied to the electric motor on the basis of steering torque of the steering wheel; and a correction unit 27 that, when a rotation speed of the electric motor is less than a predetermined rotation speed, corrects the target current calculated by the target current determination unit 25 to be reduced on the basis of an actual current supplied to the electric motor and a time during which the actual current is supplied. Thereby a technique is provided to suppress a failure of the electric motor due to an excessive current flowing through the electric motor with higher accuracy.
Public/Granted literature
- US20120035807A1 ELECTRONIC POWER STEERING APPARATUS, CONTROL METHOD THEROF AND PROGRAM Public/Granted day:2012-02-09
Information query
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