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SE9902036L - Method and apparatus for determining the friction between the roadway and the wheels of a vehicle during travel - Google Patents

Method and apparatus for determining the friction between the roadway and the wheels of a vehicle during travel

Info

Publication number
SE9902036L
SE9902036L SE9902036A SE9902036A SE9902036L SE 9902036 L SE9902036 L SE 9902036L SE 9902036 A SE9902036 A SE 9902036A SE 9902036 A SE9902036 A SE 9902036A SE 9902036 L SE9902036 L SE 9902036L
Authority
SE
Sweden
Prior art keywords
toe
wheels
friction
roadway
determining
Prior art date
Application number
SE9902036A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE513217C2 (en
SE9902036D0 (en
Inventor
Jan Folke Wallenius
Original Assignee
Jan Folke Wallenius
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 Jan Folke Wallenius filed Critical Jan Folke Wallenius
Priority to SE9902036A priority Critical patent/SE9902036L/en
Publication of SE9902036D0 publication Critical patent/SE9902036D0/en
Priority to PCT/SE2000/001155 priority patent/WO2000075618A1/en
Publication of SE513217C2 publication Critical patent/SE513217C2/en
Publication of SE9902036L publication Critical patent/SE9902036L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/02—Measuring coefficient of friction between materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/14—Independent suspensions with lateral arms
    • B60G2200/142—Independent suspensions with lateral arms with a single lateral arm, e.g. MacPherson type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/462—Toe-in/out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/80—Exterior conditions
    • B60G2400/82—Ground surface
    • B60G2400/822—Road friction coefficient determination affecting wheel traction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/04—Means for informing, instructing or displaying
    • B60G2600/044—Alarm means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/70—Estimating or calculating vehicle parameters or state variables
    • B60G2800/702—Improving accuracy of a sensor signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
    • B60T2210/10—Detection or estimation of road conditions
    • B60T2210/12—Friction

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Body Structure For Vehicles (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

The invention relates to a method and a device for deciding, during driving of a vehicle, the friction between the road and at least one of the wheels of the vehicle, which wheel is set to a prescribed toe-in/toe-out angle, wherein the mechanical forces to the wheel suspension and wheel setting means caused by the setting angle are sensed by sensors (51). According to the invention, an amplifying of the intended measuring value is obtained by the prescribed toe-in/toe-out value being imparted, instantaneously, an essentially increased value by a mechanism (20) at the same time as measuring is carried out.
SE9902036A 1999-06-03 1999-06-03 Method and apparatus for determining the friction between the roadway and the wheels of a vehicle during travel SE9902036L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9902036A SE9902036L (en) 1999-06-03 1999-06-03 Method and apparatus for determining the friction between the roadway and the wheels of a vehicle during travel
PCT/SE2000/001155 WO2000075618A1 (en) 1999-06-03 2000-06-02 Method and device for determining during driving the friction between the road and the wheel of a vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9902036A SE9902036L (en) 1999-06-03 1999-06-03 Method and apparatus for determining the friction between the roadway and the wheels of a vehicle during travel

Publications (3)

Publication Number Publication Date
SE9902036D0 SE9902036D0 (en) 1999-06-03
SE513217C2 SE513217C2 (en) 2000-07-31
SE9902036L true SE9902036L (en) 2000-07-31

Family

ID=20415866

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9902036A SE9902036L (en) 1999-06-03 1999-06-03 Method and apparatus for determining the friction between the roadway and the wheels of a vehicle during travel

Country Status (2)

Country Link
SE (1) SE9902036L (en)
WO (1) WO2000075618A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10107862B4 (en) * 2001-02-20 2004-11-25 Conti Temic Microelectronic Gmbh Method for determining a coefficient of friction between a motor vehicle tire and a wet road
FR2943417B1 (en) * 2009-03-19 2011-06-10 Michelin Soc Tech METHOD FOR DETERMINING A WHEEL ADHESION COEFFICIENT BY SIMULTANEOUS CLAMP
DE102014012685A1 (en) 2014-08-25 2016-02-25 Adrian Mihailescu Method for active lateral force and friction coefficient estimation
AU2017292934B9 (en) 2016-07-07 2024-08-29 Bolt Biotherapeutics, Inc. Antibody adjuvant conjugates
CN109029838B (en) * 2018-04-30 2024-04-12 交通运输部公路科学研究所 Constant tension traction device for lateral friction calibration
GB2642444A (en) * 2024-07-08 2026-01-14 Jotun As Vehicle steering angle correction

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1476730A (en) * 1966-02-24 1967-04-14 Ct Ex De Rech S Et D Etudes Du Device for measuring the slippage of a road
GB1207692A (en) * 1967-11-09 1970-10-07 Ml Aviation Co Ltd Measurement of the coefficient of friction between a vehicle wheel and a surface
SE395060B (en) * 1974-11-27 1977-07-25 Lonnroth Borje Gunnar Arne DEVICE FOR SATURING FRICTION BETWEEN WHEELS AND SUBSTRATES
DE3409040A1 (en) * 1984-03-10 1985-09-19 Burkhard Fugmann Method for early detection of a reduction in the tyre grip of the road wheels of a road vehicle
DE3633153A1 (en) * 1986-09-30 1988-04-07 Bosch Gmbh Robert DEVICE FOR DETERMINING THE STICTION BETWEEN THE ROAD AND THE TIRES
JP2600986B2 (en) * 1990-07-06 1997-04-16 三菱自動車工業株式会社 Rear wheel steering control method
DE4026625A1 (en) * 1990-08-23 1992-02-27 Bosch Gmbh Robert Friction coefficient measurement for vehicle wheel - by dividing detected resetting torque acting on stereo wheel by detected standing force exerted on tyre
DE19608064C2 (en) * 1996-03-02 1998-02-19 Daimler Benz Ag Method and device for determining the grip of wheels on motor vehicles

Also Published As

Publication number Publication date
SE513217C2 (en) 2000-07-31
WO2000075618A1 (en) 2000-12-14
SE9902036D0 (en) 1999-06-03

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Legal Events

Date Code Title Description
NUG Patent has lapsed