GB1187517A - Apparatus for Controlling the Pneumatic Braking of a Train - Google Patents

Apparatus for Controlling the Pneumatic Braking of a Train

Info

Publication number
GB1187517A
GB1187517A GB24968/68A GB2496868A GB1187517A GB 1187517 A GB1187517 A GB 1187517A GB 24968/68 A GB24968/68 A GB 24968/68A GB 2496868 A GB2496868 A GB 2496868A GB 1187517 A GB1187517 A GB 1187517A
Authority
GB
United Kingdom
Prior art keywords
signal
train
brake
proportional
braking
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
GB24968/68A
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.)
OERLIKEN MASCHF
Original Assignee
OERLIKEN MASCHF
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 OERLIKEN MASCHF filed Critical OERLIKEN MASCHF
Publication of GB1187517A publication Critical patent/GB1187517A/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
    • B60T8/1705—Braking or traction control means specially adapted for particular types of vehicles for rail vehicles
    • 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
    • B60T8/321—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 deceleration
    • B60T8/3235—Systems specially adapted for rail vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Regulating Braking Force (AREA)

Abstract

1,187,517. Electric control systems for brakes. MASCHINENFABRIK OERLIKON. 24 May, 1968 [1 June, 1967], No. 24968/68. Heading F2F. [Also in Division G3] Apparatus for controlling the pneumatic brakes of a train (which may have electric traction and braking) includes an Integral or Proportional Plus Integral control circuit. For a short train integral control is adequate, and the brake error signal (i.e. difference between actual and desired deceleration) is fed to an integrator circuit having a time constant such that the rate-of-change of air pressure in the train pipe is equal to or less than the rate-of-change of air pressure in any brake cylinder. In longer trains, the length of the brake pipe causes delayed rise in brake cylinder pressure and proportional + integral control is desirable, for stability, as shown diagrammatically in Fig. 4, where the braking error signal a be is applied through a limiting amplifier to an integrator 15 and through a parallel ohmic channel 16. A more detailed arrangement of this circuit is illustrated in Fig. 7 with additional features. The error signal a k is amplified at 21 to provide the proportional signal f a and also fed to limiting amplifier 23, with limit diodes 25, 26, and thence to integrator 32, and the combined signals are amplified at 38, basically as in Fig. 4. Additional features: (i) a measuring trigger circuit 40 at the output, operates at a certain minimum output to correct for small pressure drops in the train pipe; (ii) for Downhill travel at Constant Speed a switching signal c from the train controller (not shown) biases diodes 29, 36, 37 to depress the limiting level of amplifier 23 and suppress the proportional signal f a -the proportional signal is replaced at the start of braking by a signal from trigger 48 (to " memory " 47 and capacitor 44) which decays in a few seconds. This signal is negligible in normal braking. Further, the switching signal c biases diodes 54, 55 to reduce the air brake signal ak by a fraction of the desired retardation a c , so that the electric brake operates on slight slopes.
GB24968/68A 1967-06-01 1968-05-24 Apparatus for Controlling the Pneumatic Braking of a Train Expired GB1187517A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH777867A CH474393A (en) 1967-06-01 1967-06-01 Device for regulating the pneumatic braking force of a train

Publications (1)

Publication Number Publication Date
GB1187517A true GB1187517A (en) 1970-04-08

Family

ID=4330316

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24968/68A Expired GB1187517A (en) 1967-06-01 1968-05-24 Apparatus for Controlling the Pneumatic Braking of a Train

Country Status (11)

Country Link
US (1) US3537758A (en)
JP (1) JPS4911895B1 (en)
AT (1) AT285671B (en)
BE (1) BE716043A (en)
CH (1) CH474393A (en)
DE (1) DE1755486B2 (en)
ES (1) ES354565A1 (en)
FR (1) FR1579549A (en)
GB (1) GB1187517A (en)
SE (1) SE337388B (en)
YU (1) YU31366B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112590748A (en) * 2021-01-05 2021-04-02 中车株洲电力机车有限公司 Subway vehicle air brake supplementing method and device
CN112590854A (en) * 2021-01-05 2021-04-02 中车株洲电力机车有限公司 Subway vehicle air brake supplementing method and device

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1591432A (en) * 1968-11-13 1970-04-27
DE2044045A1 (en) * 1970-09-05 1972-03-09 Daimler Benz Ag, 7000 Stuttgart Brake force control for vehicles, in particular motor vehicles
US3711163A (en) * 1970-09-30 1973-01-16 Goodyear Tire & Rubber Automatic braking system
US3751116A (en) * 1972-01-27 1973-08-07 Gen Signal Corp Deceleration controller for railway brake systems
USRE33486E (en) * 1972-04-12 1990-12-11 Hydro-Aire Div. of Crane Company Selective deceleration brake control system
US3917356A (en) * 1973-09-06 1975-11-04 Boeing Co Aircraft automatic braking system
US5024491A (en) * 1976-11-18 1991-06-18 The Boeing Company Automatic aircraft braking system including wheelspeed responsive control apparatus
US4105258A (en) * 1977-05-19 1978-08-08 The United States Of America As Represented By The Secretary Of The Navy Servo type switching for remote automatic braking system
CN112319537B (en) * 2020-10-27 2022-05-06 中车株洲电力机车研究所有限公司 Train air brake state real-time evaluation method, system and storage medium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398995A (en) * 1966-10-10 1968-08-27 Westinghouse Freins & Signaux Anti-skid control system for railway vehicles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112590748A (en) * 2021-01-05 2021-04-02 中车株洲电力机车有限公司 Subway vehicle air brake supplementing method and device
CN112590854A (en) * 2021-01-05 2021-04-02 中车株洲电力机车有限公司 Subway vehicle air brake supplementing method and device
CN112590854B (en) * 2021-01-05 2022-06-14 中车株洲电力机车有限公司 Subway vehicle air brake supplementing method and device

Also Published As

Publication number Publication date
AT285671B (en) 1970-11-10
JPS4911895B1 (en) 1974-03-20
BE716043A (en) 1968-10-16
DE1755486A1 (en) 1971-08-12
ES354565A1 (en) 1969-11-01
FR1579549A (en) 1969-08-29
CH474393A (en) 1969-06-30
YU31366B (en) 1973-04-30
DE1755486B2 (en) 1975-07-03
US3537758A (en) 1970-11-03
SE337388B (en) 1971-08-09

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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