GB1206153A - Skid control system - Google Patents

Skid control system

Info

Publication number
GB1206153A
GB1206153A GB4344867A GB4344867A GB1206153A GB 1206153 A GB1206153 A GB 1206153A GB 4344867 A GB4344867 A GB 4344867A GB 4344867 A GB4344867 A GB 4344867A GB 1206153 A GB1206153 A GB 1206153A
Authority
GB
United Kingdom
Prior art keywords
fed
circuit
output
capacitor
skid
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
GB4344867A
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.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
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 Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Publication of GB1206153A publication Critical patent/GB1206153A/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
    • B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
    • B60T8/1703—Braking or traction control means specially adapted for particular types of vehicles for aircrafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/10—Indicating wheel slip ; Correction of wheel slip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface 
    • B64C25/42—Arrangement or adaptation of brakes
    • B64C25/44—Actuating mechanisms
    • B64C25/48—Actuating mechanisms differentially operated for steering purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

1,206,153. Hydraulic braking systems. GOODYEAR TIRE & RUBBER CO. 25 Sept., 1967 [9 Nov., 1966], No. 43448/67. Heading F2F. [Also in Divisions G1 an H3] In an hydraulic braking system, skidding or wheel lock is prevented by a circuit which senses the wheel speed and releases the brake pressure if the speed is below a predetermined value. The system is applied to an aircraft, and comprises a transducer 10 which produces an electrical signal proportional to wheel speed. This signal is fed to a skid detector 26, which produces an output when the wheel speed falls to zero, and to a locked-wheel detector 28 which produces an output for wheel speeds below a predetermined value. This latter circuit may be inhibited by means of a switch 32. The outputs of the two detectors are fed via an amplifier 36 to actuate a valve in the braking system. The skid detector output is also fed to a circuit 34 which ensures that, after release, the brakes are applied at a lower pressure. Circuit details.-The skid detector, Fig. 2, comprises a bridge circuit with D.C. source 38 connected across one pair of diagonals, and transistor Q24 connected across the other pair. Temperature compensating diodes CR41. . . CR44 are provided in the bridge. Any sudden change in wheel speed, due to skidding is fed via capacitor C15 to point B, and unbalances the bridge sufficiently to switch on transistors Q24, Q25, Thus producing an output signal which is fed to an amplifier, Fig. 3. The amplifier output is maintained constant by a feedback path containing temperature compensating diodes CR63 . . . CR66, and is fed to a valve control solenoid. A further output from the circuit of Fig. 2 is fed to the circuit of Fig. 4 which ensures that the valve control signal is reduced after skidding. This control signal is normally determined by the voltage across capacitor C19. In the event of a skid, transistor Q20 conducts for the duration of the skid to allow capacitor C18 to commence charging. The potential to which it charges is then fed via transistor Q29 to modify the charge on capacitor C19. A further path via capacitor C17, diode CR59 and resistor R70 is also provided to modify the control signal in the event of short duration skids.
GB4344867A 1966-11-09 1967-09-25 Skid control system Expired GB1206153A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59315066A 1966-11-09 1966-11-09

Publications (1)

Publication Number Publication Date
GB1206153A true GB1206153A (en) 1970-09-23

Family

ID=24373583

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4344867A Expired GB1206153A (en) 1966-11-09 1967-09-25 Skid control system

Country Status (4)

Country Link
JP (1) JPS5138879B1 (en)
DE (1) DE1563957C3 (en)
GB (1) GB1206153A (en)
SE (1) SE336966B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10131421B2 (en) * 2015-12-22 2018-11-20 Goodrich Corporation Locked wheel extension protection in brake control systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022114A (en) * 1958-01-31 1962-02-20 Thompson Ramo Wooldridge Inc Brake control system
US2980369A (en) * 1959-04-07 1961-04-18 Goodyear Tire & Rubber Anti-skid system electric circuit
US3245727A (en) * 1962-08-15 1966-04-12 Crane Co Anti-skid brake control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10131421B2 (en) * 2015-12-22 2018-11-20 Goodrich Corporation Locked wheel extension protection in brake control systems

Also Published As

Publication number Publication date
DE1563957B2 (en) 1981-06-04
DE1563957A1 (en) 1970-12-17
JPS5138879B1 (en) 1976-10-25
SE336966B (en) 1971-07-19
DE1563957C3 (en) 1982-07-22

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years