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GB2002473A - Anti-skid brake control system - Google Patents

Anti-skid brake control system

Info

Publication number
GB2002473A
GB2002473A GB7832832A GB7832832A GB2002473A GB 2002473 A GB2002473 A GB 2002473A GB 7832832 A GB7832832 A GB 7832832A GB 7832832 A GB7832832 A GB 7832832A GB 2002473 A GB2002473 A GB 2002473A
Authority
GB
United Kingdom
Prior art keywords
acceleration
friction conditions
level
sense
vary
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
GB7832832A
Other versions
GB2002473B (en
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.)
Girling Ltd
Original Assignee
Girling 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 Girling Ltd filed Critical Girling Ltd
Priority to GB7832832A priority Critical patent/GB2002473B/en
Publication of GB2002473A publication Critical patent/GB2002473A/en
Application granted granted Critical
Publication of GB2002473B publication Critical patent/GB2002473B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
    • B60T8/1763—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to the coefficient of friction between the wheels and the ground surface
    • B60T8/17633—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to the coefficient of friction between the wheels and the ground surface based on analogue circuits or digital circuits comprised of discrete electronic elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

An anti-skid brake control system produces a signal proportional to the acceleration of a braked wheel; a trigger signal is produced at a set acceleration level to divide successive deceleration/acceleration cycles into successive acceleration periods separated by intermediate periods; integrating means respond to said trigger signals to produce an output signal that changes in a predetermined progressive manner in one sense during each acceleration period and in the opposite sense during each intermediate period so as to vary in accordance with surface friction conditions. The output signal is used to vary a control parameter or function within the system, such as the set acceleration level so that it is set in accordance with said surface friction conditions. Preferably, said integrating means comprises a capacitor that is discharged so that its potential falls in said one sense from an initial predetermined level and rises in said opposite sense, the charging rate being increased at a predetermined threshold potential below which low friction conditions are signalled.
GB7832832A 1977-08-10 1978-08-09 Anti-skid brake control system Expired GB2002473B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7832832A GB2002473B (en) 1977-08-10 1978-08-09 Anti-skid brake control system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3345677 1977-08-10
GB7832832A GB2002473B (en) 1977-08-10 1978-08-09 Anti-skid brake control system

Publications (2)

Publication Number Publication Date
GB2002473A true GB2002473A (en) 1979-02-21
GB2002473B GB2002473B (en) 1982-02-17

Family

ID=26261877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7832832A Expired GB2002473B (en) 1977-08-10 1978-08-09 Anti-skid brake control system

Country Status (1)

Country Link
GB (1) GB2002473B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0133598A3 (en) * 1983-08-09 1986-08-20 Nippondenso Co., Ltd. Antiskid control with surface friction compensation by prolonged down-pressure operation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0133598A3 (en) * 1983-08-09 1986-08-20 Nippondenso Co., Ltd. Antiskid control with surface friction compensation by prolonged down-pressure operation

Also Published As

Publication number Publication date
GB2002473B (en) 1982-02-17

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920809