ES354565A1 - Device for controlling the pneumatic braking force of a railway train - Google Patents

Device for controlling the pneumatic braking force of a railway train

Info

Publication number
ES354565A1
ES354565A1 ES354565A ES354565A ES354565A1 ES 354565 A1 ES354565 A1 ES 354565A1 ES 354565 A ES354565 A ES 354565A ES 354565 A ES354565 A ES 354565A ES 354565 A1 ES354565 A1 ES 354565A1
Authority
ES
Spain
Prior art keywords
signal
brake
proportional
train
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
ES354565A
Other languages
Spanish (es)
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.)
Rheinmetall Air Defence AG
Maschinenfabrik Oerlikon AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Maschinenfabrik Oerlikon AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG, Maschinenfabrik Oerlikon AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Publication of ES354565A1 publication Critical patent/ES354565A1/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)
  • Regulating Braking Force (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

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.
ES354565A 1967-06-01 1968-05-31 Device for controlling the pneumatic braking force of a railway train Expired ES354565A1 (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
ES354565A1 true ES354565A1 (en) 1969-11-01

Family

ID=4330316

Family Applications (1)

Application Number Title Priority Date Filing Date
ES354565A Expired ES354565A1 (en) 1967-06-01 1968-05-31 Device for controlling the pneumatic braking force of a railway 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)

Families Citing this family (12)

* 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
CN112590748B (en) * 2021-01-05 2022-04-08 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
CN116215600B (en) * 2023-02-10 2023-11-28 克诺尔车辆设备(苏州)有限公司 Method and device for controlling standard alignment and parking of railway vehicle and computer 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

Also Published As

Publication number Publication date
YU31366B (en) 1973-04-30
SE337388B (en) 1971-08-09
AT285671B (en) 1970-11-10
JPS4911895B1 (en) 1974-03-20
DE1755486A1 (en) 1971-08-12
US3537758A (en) 1970-11-03
CH474393A (en) 1969-06-30
GB1187517A (en) 1970-04-08
BE716043A (en) 1968-10-16
FR1579549A (en) 1969-08-29
DE1755486B2 (en) 1975-07-03

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