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GB1536257A - Wheel lock control systems - Google Patents

Wheel lock control systems

Info

Publication number
GB1536257A
GB1536257A GB39523/77A GB3952377A GB1536257A GB 1536257 A GB1536257 A GB 1536257A GB 39523/77 A GB39523/77 A GB 39523/77A GB 3952377 A GB3952377 A GB 3952377A GB 1536257 A GB1536257 A GB 1536257A
Authority
GB
United Kingdom
Prior art keywords
signal
deceleration
effective
brake release
during
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.)
Expired
Application number
GB39523/77A
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.)
Motors Liquidation Co
Original Assignee
General Motors Corp
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
Priority claimed from US05/727,943 external-priority patent/US4061402A/en
Priority claimed from US05/727,942 external-priority patent/US4061403A/en
Application filed by General Motors Corp filed Critical General Motors Corp
Publication of GB1536257A publication Critical patent/GB1536257A/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
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
    • 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
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/402—Back-up
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/406—Test-mode; Self-diagnosis

Landscapes

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

Abstract

1536257 Anti-skid braking systems GENERAL MOTORS CORP 22 Sept 1977 [29 Sept 1976 (2)] 39523/77 Heading F2F A wheel lock control system comprises components 10-26 to provide a wheel speed signal (at 28), a deceleration switch 30 responsive to the wheel speed signal and effective to provide a control signal which is initiated when the rate of change of wheel speed exceeds a predetermined threshold deceleration, a "cycle depth" integrator 32 effective to generate cycle depth signal, (defined below), and control components 40-44 responsive to the control signal and the cycle depth signal for effecting wheel brake release during the period of the control signal and during the period that the cycle depth signal exceeds a reference value, the cycle depth integrator including means responsive to the wheel speed signal and effective to provide a wheel acceleration or deceleration signal, means effective during brake application to provide a deceleration reference signal representing a maximum vehicle deceleration, the deceleration reference signal being terminated during brake release, and integrating means effective to integrate the sum of the acceleration/deceleration signal and the deceleration reference signal to provide the cycle depth signal, the cycle depth signal being a composite one comprising a first portion representing the amount that the time integral of the deceleration reference signal exceeds the wheel speed during brake application, and a second portion which is the integral off wheel acceleration during brake release. The system also includes a system-failure monitoring and disabling circuit comprising a component 50 effective to generate a fault signal in response to a sensed malfunction from any one of components 48, 52, 32, 42, a logic component 54 responsive both to the fault signal and the brake release signal direct from 42 and effective to provide an inhibit logic signal; when no brake release signal is present the inhibit signal exists only for the duration of a temporary fault, but if the fault signal co-exists at least momentarily with the brake release signal, the inhibit signal exists for the duration of the fault signal or the brake release signal, whichever is the longer. The system is inhibited, via components 42, 44, from releasing the vehicle wheels during the period of the inhibit signal, and a lamp warning circuit 56 is energized.
GB39523/77A 1976-09-29 1977-09-22 Wheel lock control systems Expired GB1536257A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/727,943 US4061402A (en) 1976-09-29 1976-09-29 Wheel lock control system failure and disabling circuit
US05/727,942 US4061403A (en) 1976-09-29 1976-09-29 Wheel lock control system

Publications (1)

Publication Number Publication Date
GB1536257A true GB1536257A (en) 1978-12-20

Family

ID=27111612

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39523/77A Expired GB1536257A (en) 1976-09-29 1977-09-22 Wheel lock control systems

Country Status (8)

Country Link
JP (1) JPS5930589B2 (en)
AU (1) AU507671B2 (en)
BR (1) BR7706479A (en)
DE (1) DE2742991C2 (en)
FR (1) FR2366154A1 (en)
GB (1) GB1536257A (en)
NL (1) NL7710311A (en)
SE (1) SE419069B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113267995A (en) * 2021-04-27 2021-08-17 长春同泽科技有限公司 Drive control device, control method and mine transport vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034854B1 (en) * 1980-02-15 1984-02-08 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Monitoring circuit for a signalling circuit of a braking device of a vehicle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966267A (en) * 1973-01-26 1976-06-29 Eaton Corporation Skid control system
US3953080A (en) * 1973-11-28 1976-04-27 General Motors Corporation Adaptive anti-lock brake control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113267995A (en) * 2021-04-27 2021-08-17 长春同泽科技有限公司 Drive control device, control method and mine transport vehicle

Also Published As

Publication number Publication date
DE2742991A1 (en) 1978-03-30
BR7706479A (en) 1978-06-27
AU507671B2 (en) 1980-02-21
SE7710851L (en) 1978-03-30
JPS5930589B2 (en) 1984-07-27
SE419069B (en) 1981-07-13
FR2366154A1 (en) 1978-04-28
FR2366154B1 (en) 1981-02-06
NL7710311A (en) 1978-03-31
AU2882177A (en) 1979-03-22
DE2742991C2 (en) 1984-10-31
JPS5343189A (en) 1978-04-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee