KR970074487A - Control method of power steering - Google Patents

Control method of power steering Download PDF

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Publication number
KR970074487A
KR970074487A KR1019960018260A KR19960018260A KR970074487A KR 970074487 A KR970074487 A KR 970074487A KR 1019960018260 A KR1019960018260 A KR 1019960018260A KR 19960018260 A KR19960018260 A KR 19960018260A KR 970074487 A KR970074487 A KR 970074487A
Authority
KR
South Korea
Prior art keywords
pressure
equal
steering
fluid pressure
supply flow
Prior art date
Application number
KR1019960018260A
Other languages
Korean (ko)
Other versions
KR100193066B1 (en
Inventor
박철우
Original Assignee
오상수
만도기계 주식회사
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 오상수, 만도기계 주식회사 filed Critical 오상수
Priority to KR1019960018260A priority Critical patent/KR100193066B1/en
Publication of KR970074487A publication Critical patent/KR970074487A/en
Application granted granted Critical
Publication of KR100193066B1 publication Critical patent/KR100193066B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
    • B62D6/02—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to vehicle speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/20—Conjoint control of vehicle sub-units of different type or different function including control of steering systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/065—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
    • B62D5/083—Rotary valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
    • B62D6/08—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque
    • B62D6/10—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque characterised by means for sensing or determining torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/20—Steering systems
    • B60W2510/202—Steering torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/20—Steering systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/306—Pressure sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/307—Torque sensors

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

본 발명은 차량의 주행속도 및 조향 토오크에 따라 유압 펌프의 공급 유량을 조절하는 동력 조향장치의 제어방법에 관한 것으로, 공급 유로의 유체 압력이 미리 설정된 최대 압력(PU) 이상인지를 판단하는 제1 과정과, 상기 제1과정에서 상기 유체 압력이 최대 압력(PU) 이하일 경우 상기 유체 압력이 미리 설정된 최저 압력(PL) 이상인지를 재 판단하는 제2 과정과, 상기 제2 과정에서 공급 유로의 유체 압력이 미리 설정된 최대 압력(PU) 이하면서 최저 압력(PL) 이상일 경우에는 모터(7)의 구동을 이전의 상태 그대로 유지하는 제3 과정과, 상기 제2 과정에서 상기 유체 압력이 미리 설정된 최저 압력(PL) 이하일 경우에는 차속을 판단하는 제4 과정과, 제4 과정에서 판단한 차속에 따라 미리 설정된 차속 그래프와 조향 핸들에 의한 조향 토오크의 값에 따라 공급 유량을 조절하는 제5 과정으로 제어되어, 차량을 주행속도에 따라 공급 유량을 조절하여 조향력을 가변시킴으로써 운전자는 차량의 주행속도에 따른 조향감으로 조향핸들을 조향하게 되고, 이로 인하여 조향 안정성을 향상시키게 되는 효과가 있다.The present invention relates to a control method of a power steering apparatus for adjusting a supply flow rate of a hydraulic pump according to a traveling speed and a steering torque of a vehicle, the method comprising: determining whether a fluid pressure of a supply flow path is greater than or equal to a preset maximum pressure (P U ). A second step of re-determining whether the fluid pressure is greater than or equal to a predetermined minimum pressure P L when the fluid pressure is equal to or less than the maximum pressure P U in the first step, and the second step; When the fluid pressure of the flow path is equal to or less than the preset maximum pressure P U and equal to or more than the minimum pressure P L , a third process of maintaining the driving of the motor 7 as it was, and the fluid pressure in the second process If this is less than a preset minimum pressure (P L) is depending on the value of the fourth step and the steering torque according to the fourth process of the vehicle speed and the steering wheel is previously set according to the graph determines the vehicle speed from the vehicle speed to determine the Controlled by the fifth process of controlling the supply flow rate, by adjusting the supply flow rate according to the traveling speed of the vehicle to change the steering force, the driver is steering the steering wheel with the steering feeling according to the driving speed of the vehicle, thereby improving the steering stability There is an effect to be improved.

Description

동력 조향장치의 제어방법Control method of power steering

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명의 제어방법이 적용되는 동력 조향장치의 구성도, 제3도는 본 발명의 제어방법을 보인 신호 흐름도, 제4도는 본 발명의 제어방법에 의한 공급 유로 압력과 모터의 구동전압 관계를 보인 그래프.2 is a configuration diagram of a power steering apparatus to which the control method of the present invention is applied, FIG. 3 is a signal flow diagram showing a control method of the present invention, and FIG. 4 is a relationship between a supply flow path pressure and a driving voltage of a motor according to the control method of the present invention. Shows the graph.

Claims (1)

공급 유로의 압력이 미리 설정된 최대 압력(PU) 이상인지를 판단하는 제1 과정과, 상기 제1 과정에서 상기 유체 압력이 최대 압력(PU) 이하일 경우 상기 유체 압력이 미리 설정된 최저 압력(PL) 이상인지를 재 판단하는 제2 과정과, 상기 제2 과정에서 공급 유로의 유체 압력이 미리 설정된 최대 압력(PU) 이하면서 최저 압력(PL) 이상일 경우에는 모터(7)의 구동을 이전의 상태 그대로 유지하는 제3 과정과, 상기 제2 과정에서 상기 유체 압력이 미리 설정된 최저 압력(PL) 이하일 경우에는 차속을 판단하는, 제4 과정과, 제4 과정에서 판단한차속에 따라 미리 설정된 차속 그래프와 조향 핸들에 의한 조향 토오크의 값에 따라 공급 유량을 조절하는 제5 과정으로 제어됨을 특징으로 하는 동력조향장치의 제어방법.A first step of determining whether the pressure in the supply flow path is equal to or greater than a preset maximum pressure PU; and when the fluid pressure is less than or equal to the maximum pressure PU in the first step, the fluid pressure is equal to or greater than the preset minimum pressure PL. In the second process of re-determining recognition, and in the second process, when the fluid pressure of the supply flow path is equal to or less than the preset maximum pressure PU and above the minimum pressure PL, the driving of the motor 7 is maintained as it was. And a fourth process for determining a vehicle speed when the fluid pressure is less than or equal to a preset minimum pressure PL in the second process, and a vehicle speed graph and a steering wheel preset according to the vehicle speed determined in the fourth process. The control method of the power steering apparatus characterized in that the control by the fifth process for adjusting the supply flow rate in accordance with the value of the steering torque by. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960018260A 1996-05-28 1996-05-28 Power steering control method KR100193066B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960018260A KR100193066B1 (en) 1996-05-28 1996-05-28 Power steering control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960018260A KR100193066B1 (en) 1996-05-28 1996-05-28 Power steering control method

Publications (2)

Publication Number Publication Date
KR970074487A true KR970074487A (en) 1997-12-10
KR100193066B1 KR100193066B1 (en) 1999-06-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960018260A KR100193066B1 (en) 1996-05-28 1996-05-28 Power steering control method

Country Status (1)

Country Link
KR (1) KR100193066B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020004179A (en) * 2000-07-03 2002-01-16 배길훈 flow control device and thereof method of speed induction type power steering system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101370168B1 (en) * 2009-08-11 2014-03-04 현대중공업 주식회사 Power handle control method of wheel excavator by pressure sensor of the steering unit
US8540048B2 (en) 2011-12-28 2013-09-24 Caterpillar Inc. System and method for controlling transmission based on variable pressure limit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020004179A (en) * 2000-07-03 2002-01-16 배길훈 flow control device and thereof method of speed induction type power steering system

Also Published As

Publication number Publication date
KR100193066B1 (en) 1999-06-15

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