GB1362964A – Anti-lock vehicle brake systems
– Google Patents
GB1362964A – Anti-lock vehicle brake systems
– Google Patents
Anti-lock vehicle brake systems
Info
Publication number
GB1362964A
GB1362964A
GB3532171A
GB3532171A
GB1362964A
GB 1362964 A
GB1362964 A
GB 1362964A
GB 3532171 A
GB3532171 A
GB 3532171A
GB 3532171 A
GB3532171 A
GB 3532171A
GB 1362964 A
GB1362964 A
GB 1362964A
Authority
GB
United Kingdom
Prior art keywords
output
pulse
pulses
train
frequency
Prior art date
1971-07-27
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
GB3532171A
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.)
Philips Components Ltd
Original Assignee
Mullard 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.)
1971-07-27
Filing date
1971-07-27
Publication date
1974-08-14
1971-07-27
Application filed by Mullard Ltd
filed
Critical
Mullard Ltd
1971-07-27
Priority to GB3532171A
priority
Critical
patent/GB1362964A/en
1972-07-18
Priority to US272776A
priority
patent/US3888548A/en
1972-07-20
Priority to DE2235607A
priority
patent/DE2235607A1/en
1972-07-24
Priority to CA147,746A
priority
patent/CA1004751A/en
1972-07-24
Priority to SE7209662A
priority
patent/SE387076B/en
1972-07-24
Priority to IT69403/72A
priority
patent/IT964773B/en
1972-07-25
Priority to NL7210206A
priority
patent/NL7210206A/xx
1972-07-26
Priority to JP7494572A
priority
patent/JPS5320636B1/ja
1972-07-27
Priority to FR7227093A
priority
patent/FR2147258B1/fr
1974-08-14
Publication of GB1362964A
publication
Critical
patent/GB1362964A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
Abstract
1362964 Anti-skid braking system MULLARD Ltd 27 July 1971 35321/71 Heading F2F An electronic control circuit for anti-lock vehicle brake system is operable to energize a solenoid valve mechanism of the system to relieve braking pressure in response to wheel deceleration being in excess of a reference value and is further operable following energization of the solenoid valve mechanism to vary said reference value progressively in a positive sense and to hold the solenoid valve mechanism energized until the rate of change of wheel speed attains a particular relationship with the varying reference value, said control circuit being responsive for its operation to an input signal which varies as a function of rate of change of wheel speed. In the block diagram shown there is a pick-up PU which produces a train of pulses whose frequency is proportional to the speed of rotation of a wheel W the pulse train being applied to an element LAM which consists of a limiter amplifier for the pulse train followed by a monostable element so that the output of element LAM is a train of constant width pulses the width of which is approximately 200 microseconds and the frequency of which varies over a range of 50 cycles to 1000 cycles per second; the output from element LAM is applied to a pulse generator element PG which produces an output pulse for each pulse received from element LAM the pulses from the element PG having a duration of one millisecond so that at or above the normal maximum input frequency of 1000 cycles per second the output from the element PG is a constant voltage equal to the normal pulse amplitude. The output of the element PG is applied to a waveform generator element WG which sets the pulse so that its output is a voltage which for each pulse varies as a function of the time since the last pulse. The output of the element WG is applied to a speed signal output element SS whose output is a voltage the value of which is a function of the input pulse frequency from the pick-up PU; the elements LAM, PG, WG and SS constitute a frequency to D.C. converter and the voltage output from the element SS changes its value in the series of steps when the input pulse frequency changes. The output from the element SS is applied to a detector element DD which differentiates this output and produces a train of output pulses whenever the speed signal voltage changes its value at a rate in excess of the reference rate which is fed into the detector element DD from a reference control element RC. The train of output pulses from the detector element DD are applied to a bi-stable element BE which is also fed with one millisecond pulses from the generator element PG, the element BE produces a constant output capable for turning on a power output stage POS whenever the detector element DD produces the train of pulses; the pulses from the generator element PG continually attempt to reset bi-stable element BE to terminate its output and do so each time the pulses from the detector element DD cease. When the stage POS is turned on, its output energizes a solenoid valve mechanism SV which relieves braking pressure and the stage POS also activates an automatic turn-off element AT which turns off the stage POS after a preset time independently of the output from the bi-stable element BE; a further output from the stage POS is applied to the element RC to modify the reference rate fed into the detector DD. Circuit diagrams for the various elements are shown in the Specification.
GB3532171A
1971-07-27
1971-07-27
Anti-lock vehicle brake systems
Expired
GB1362964A
(en)
Priority Applications (9)
Application Number
Priority Date
Filing Date
Title
GB3532171A
GB1362964A
(en)
1971-07-27
1971-07-27
Anti-lock vehicle brake systems
US272776A
US3888548A
(en)
1971-07-27
1972-07-18
Anti-lock vehicle brake system
DE2235607A
DE2235607A1
(en)
1971-07-27
1972-07-20
ANTI-LOCK BRAKE SYSTEM FOR VEHICLES
CA147,746A
CA1004751A
(en)
1971-07-27
1972-07-24
Anti-lock vehicle brake systems
SE7209662A
SE387076B
(en)
1971-07-27
1972-07-24
ELECTRONIC CONTROL CIRCUIT FOR A LOAD PREVENTION VEHICLE BRAKE SYSTEM
IT69403/72A
IT964773B
(en)
1971-07-27
1972-07-24
ANTI-LOCKING BRAKE SYSTEM FOR VEHICLES
NL7210206A
NL7210206A
(en)
1971-07-27
1972-07-25
JP7494572A
JPS5320636B1
(en)
1971-07-27
1972-07-26
FR7227093A
FR2147258B1
(en)
1971-07-27
1972-07-27
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB3532171A
GB1362964A
(en)
1971-07-27
1971-07-27
Anti-lock vehicle brake systems
Publications (1)
Publication Number
Publication Date
GB1362964A
true
GB1362964A
(en)
1974-08-14
Family
ID=10376398
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3532171A
Expired
GB1362964A
(en)
1971-07-27
1971-07-27
Anti-lock vehicle brake systems
Country Status (9)
Country
Link
US
(1)
US3888548A
(en)
JP
(1)
JPS5320636B1
(en)
CA
(1)
CA1004751A
(en)
DE
(1)
DE2235607A1
(en)
FR
(1)
FR2147258B1
(en)
GB
(1)
GB1362964A
(en)
IT
(1)
IT964773B
(en)
NL
(1)
NL7210206A
(en)
SE
(1)
SE387076B
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2538403A1
(en)
*
1974-09-11
1976-03-25
Bendix Corp
ADAPTIVELY CONTROLLED BRAKING SYSTEM FOR VEHICLES
Families Citing this family (14)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2175585B1
(en)
*
1972-03-15
1974-08-02
Dba
GB1396413A
(en)
*
1972-05-01
1975-06-04
Mullard Ltd
Anti-lock vehicle brake systems
DE2527471C2
(en)
*
1975-06-20
1986-09-18
Robert Bosch Gmbh, 7000 Stuttgart
Anti-lock control system for a vehicle brake system
GB1597225A
(en)
*
1977-04-05
1981-09-03
Girling Ltd
Anti-lock brake control system
GB1597224A
(en)
*
1977-04-05
1981-09-03
Girling Ltd
Anti-lock brake control system
US4530059A
(en)
*
1982-04-30
1985-07-16
Lucas Industries Public Limited Company
Vehicle anti-lock breaking control
DE3345729A1
(en)
*
1983-12-17
1985-06-27
Alfred Teves Gmbh, 6000 Frankfurt
METHOD AND CIRCUIT ARRANGEMENT FOR SUPPRESSING UNWANTED CONTROL PROCESSES IN SLIP-CONTROLLED BRAKE SYSTEMS
JPS60133901U
(en)
*
1984-01-25
1985-09-06
藤倉ゴム工業株式会社
shoes
DE3440244A1
(en)
*
1984-11-03
1986-05-07
Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover
ANTI-BLOCKING SYSTEM
DE3704316A1
(en)
*
1987-02-12
1988-08-25
Vdo Schindling
METHOD AND CIRCUIT ARRANGEMENT FOR PREVENTING VIBRATIONS OF A MOTOR VEHICLE
JP2564816B2
(en)
*
1987-03-11
1996-12-18
トヨタ自動車株式会社
Vehicle drive wheel brake control device
JPS6423206U
(en)
*
1987-08-04
1989-02-07
US4824184A
(en)
*
1987-12-11
1989-04-25
General Motors Corporation
Antiblock brake controller with brake mode filter
US5233528A
(en)
*
1991-04-26
1993-08-03
Allied-Signal Inc.
Braking by deceleration control
Family Cites Families (13)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE1170994B
(en)
*
1962-06-19
1964-05-27
Siemens Ag
Device for detecting skidding or sliding
US3398995A
(en)
*
1966-10-10
1968-08-27
Westinghouse Freins & Signaux
Anti-skid control system for railway vehicles
US3467444A
(en)
*
1967-04-04
1969-09-16
Teldix Luftfahrt Ausruestung
Vehicle brake control system for preventing wheel locking
DE1655454A1
(en)
*
1967-10-28
1971-08-12
Teldix Gmbh
Anti-lock control system suitable for pressurized vehicle brakes
US3606490A
(en)
*
1968-01-25
1971-09-20
Nippon Denso Co
Anti-skid control system for automotive vehicles
US3652133A
(en)
*
1968-06-05
1972-03-28
Hayakawa Denki Kogyo Kk
Brake control device
CA927952A
(en)
*
1968-09-20
1973-06-05
E. Riordan Hugh
Skid control system
US3525553A
(en)
*
1968-09-30
1970-08-25
Bendix Corp
Adaptive braking system responsive to tire-road surface conditions
JPS4834035B1
(en)
*
1968-10-31
1973-10-18
GB1301170A
(en)
*
1969-12-06
1972-12-29
Nippon Denso Co
Anti-skid braking device for vehicles
US3547501A
(en)
*
1969-12-12
1970-12-15
Gen Motors Corp
Antilock brake control
US3677609A
(en)
*
1970-09-25
1972-07-18
Bendix Corp
Adaptive control for fluid pressure braking system
US3717384A
(en)
*
1971-03-15
1973-02-20
Gen Motors Corp
Anti-lock brake control system
1971
1971-07-27
GB
GB3532171A
patent/GB1362964A/en
not_active
Expired
1972
1972-07-18
US
US272776A
patent/US3888548A/en
not_active
Expired – Lifetime
1972-07-20
DE
DE2235607A
patent/DE2235607A1/en
not_active
Withdrawn
1972-07-24
SE
SE7209662A
patent/SE387076B/en
unknown
1972-07-24
CA
CA147,746A
patent/CA1004751A/en
not_active
Expired
1972-07-24
IT
IT69403/72A
patent/IT964773B/en
active
1972-07-25
NL
NL7210206A
patent/NL7210206A/xx
unknown
1972-07-26
JP
JP7494572A
patent/JPS5320636B1/ja
active
Pending
1972-07-27
FR
FR7227093A
patent/FR2147258B1/fr
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2538403A1
(en)
*
1974-09-11
1976-03-25
Bendix Corp
ADAPTIVELY CONTROLLED BRAKING SYSTEM FOR VEHICLES
Also Published As
Publication number
Publication date
SE387076B
(en)
1976-08-30
CA1004751A
(en)
1977-02-01
DE2235607A1
(en)
1973-02-08
NL7210206A
(en)
1973-01-30
FR2147258B1
(en)
1977-01-14
FR2147258A1
(en)
1973-03-09
IT964773B
(en)
1974-01-31
US3888548A
(en)
1975-06-10
JPS5320636B1
(en)
1978-06-28
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Legal Events
Date
Code
Title
Description
1974-12-27
PS
Patent sealed [section 19, patents act 1949]
1983-03-02
PCNP
Patent ceased through non-payment of renewal fee
