JPH03114971A - Control method for electric power steering device - Google Patents

Control method for electric power steering device

Info

Publication number
JPH03114971A
JPH03114971A JP24019489A JP24019489A JPH03114971A JP H03114971 A JPH03114971 A JP H03114971A JP 24019489 A JP24019489 A JP 24019489A JP 24019489 A JP24019489 A JP 24019489A JP H03114971 A JPH03114971 A JP H03114971A
Authority
JP
Japan
Prior art keywords
current
steering
motor
zone
cpu
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.)
Granted
Application number
JP24019489A
Other languages
Japanese (ja)
Other versions
JP2762370B2 (en
Inventor
Shinobu Kamono
Masayuki Shimura
Tomoyuki Ishii
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.)
Jidosha Kiki Co Ltd
Original Assignee
Jidosha Kiki 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 Jidosha Kiki Co Ltd filed Critical Jidosha Kiki Co Ltd
Priority to JP24019489A priority Critical patent/JP2762370B2/en
Publication of JPH03114971A publication Critical patent/JPH03114971A/en
Priority claimed from US07/831,612 external-priority patent/US5150021A/en
Application granted granted Critical
Publication of JP2762370B2 publication Critical patent/JP2762370B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To ensure current limitation in a steering stopper zone and the preven tion of current limitation in a normal zone by limiting motor current when a steering condition is kept in a steady state, and a motor current value or a motor drive duty ratio is equal to or more than the set value.
CONSTITUTION: CPU 4 computes a motor current indication value (c) and the direction thereof from a handle torque signal (a) and speed signal (b). Upon receipt of the values so computed, a motor 18 begins to turn. Then, CPU 4 detects voltage VM between motor terminals and makes judgement about a steering condition. When the steering condition is in a steady state, judgement is further made as to whether motor current I exceeds the set value ISET. When I is equal to or more than ISET, CPU 4 judges that an overload condition is taking place and limits the current. According to the aforesaid construction, current limitation in a steering step zone and the prevention of current limitation in a normal zone can be properly performed, thereby preventing a heavy steering state in the normal zone.
COPYRIGHT: (C)1991,JPO&Japio
JP24019489A 1989-09-18 1989-09-18 Control method of electric power steering device Expired - Fee Related JP2762370B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24019489A JP2762370B2 (en) 1989-09-18 1989-09-18 Control method of electric power steering device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24019489A JP2762370B2 (en) 1989-09-18 1989-09-18 Control method of electric power steering device
US07/831,612 US5150021A (en) 1989-09-18 1992-02-05 Method of controlling electric power steering apparatus

Publications (2)

Publication Number Publication Date
JPH03114971A true JPH03114971A (en) 1991-05-16
JP2762370B2 JP2762370B2 (en) 1998-06-04

Family

ID=17055859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24019489A Expired - Fee Related JP2762370B2 (en) 1989-09-18 1989-09-18 Control method of electric power steering device

Country Status (1)

Country Link
JP (1) JP2762370B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090265062A1 (en) * 2006-08-16 2009-10-22 Toyota Jidosha Kabushiki Kaisha Steering support device
WO2013118339A1 (en) * 2012-02-06 2013-08-15 日本精工株式会社 Electric power steering device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3572038B2 (en) 2001-08-30 2004-09-29 三菱電機株式会社 Steering control device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61220967A (en) * 1985-03-26 1986-10-01 Toyoda Mach Works Ltd Motor-driven type power steering gear
JPS63102573U (en) * 1986-12-24 1988-07-04

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61220967A (en) * 1985-03-26 1986-10-01 Toyoda Mach Works Ltd Motor-driven type power steering gear
JPS63102573U (en) * 1986-12-24 1988-07-04

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090265062A1 (en) * 2006-08-16 2009-10-22 Toyota Jidosha Kabushiki Kaisha Steering support device
US8676441B2 (en) * 2006-08-16 2014-03-18 Toyota Jidosha Kabushiki Kaisha Steering support device
WO2013118339A1 (en) * 2012-02-06 2013-08-15 日本精工株式会社 Electric power steering device
JP2014111450A (en) * 2012-02-06 2014-06-19 Nsk Ltd Electric power steering apparatus
JP5609987B2 (en) * 2012-02-06 2014-10-22 日本精工株式会社 Electric power steering device
US9278708B2 (en) 2012-02-06 2016-03-08 Nsk Ltd. Electric power steering apparatus
EP2813414A4 (en) * 2012-02-06 2017-01-04 NSK Ltd. Electric power steering device

Also Published As

Publication number Publication date
JP2762370B2 (en) 1998-06-04

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees