JPH01197169A - Motor driven power steering device - Google Patents

Motor driven power steering device

Info

Publication number
JPH01197169A
JPH01197169A JP2165688A JP2165688A JPH01197169A JP H01197169 A JPH01197169 A JP H01197169A JP 2165688 A JP2165688 A JP 2165688A JP 2165688 A JP2165688 A JP 2165688A JP H01197169 A JPH01197169 A JP H01197169A
Authority
JP
Japan
Prior art keywords
current value
drive current
value
maximum
electric motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2165688A
Other languages
Japanese (ja)
Inventor
Moritsune Nakada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP2165688A priority Critical patent/JPH01197169A/en
Publication of JPH01197169A publication Critical patent/JPH01197169A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent an electric motor from being burnt and damaged by controlling a command value so as to be decreased between specified current values when a drive current value reaches the maximum current value for a specified time or more, in order to prevent the drive current value from exceeding the maximum current value.
CONSTITUTION: In a device where steering assisting torque is generated by an electric motor B connected to a steering system A, an operating means for operating a target command value based on the output of a steering torque detection means C. Further, a detection means F for detecting a drive current value of an electric motor driving means E is provided, and a comparison means G judges whether the drive current reaches the maximum current value or not, and further, a judgement means H judges whether the drive current reaches the maximum value for a specified time continuously. Then, in a command value control means I, the command value is controlled so that the drive current value decreases to a specified current value when the drive current continues having the maximum current value for a specified time, in order that the drive current does not exceed the maximum current value.
COPYRIGHT: (C)1989,JPO&Japio
JP2165688A 1988-02-01 1988-02-01 Motor driven power steering device Pending JPH01197169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2165688A JPH01197169A (en) 1988-02-01 1988-02-01 Motor driven power steering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2165688A JPH01197169A (en) 1988-02-01 1988-02-01 Motor driven power steering device

Publications (1)

Publication Number Publication Date
JPH01197169A true JPH01197169A (en) 1989-08-08

Family

ID=12061091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2165688A Pending JPH01197169A (en) 1988-02-01 1988-02-01 Motor driven power steering device

Country Status (1)

Country Link
JP (1) JPH01197169A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0237074A (en) * 1988-07-27 1990-02-07 Koyo Seiko Co Ltd Motor-driven power steering device
US5299648A (en) * 1991-07-22 1994-04-05 Jidosha Kiki Co., Ltd. Driver current limiting method in electric power steering apparatus
KR100746716B1 (en) * 2003-08-25 2007-08-06 주식회사 만도 Control methode of motor current in eps system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0237074A (en) * 1988-07-27 1990-02-07 Koyo Seiko Co Ltd Motor-driven power steering device
US5299648A (en) * 1991-07-22 1994-04-05 Jidosha Kiki Co., Ltd. Driver current limiting method in electric power steering apparatus
KR100746716B1 (en) * 2003-08-25 2007-08-06 주식회사 만도 Control methode of motor current in eps system

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