GB1187517A - Apparatus for Controlling the Pneumatic Braking of a Train - Google Patents
Apparatus for Controlling the Pneumatic Braking of a TrainInfo
- 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
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.
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)
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)
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)
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 |
-
1967
- 1967-06-01 CH CH777867A patent/CH474393A/en not_active IP Right Cessation
-
1968
- 1968-05-15 DE DE1755486A patent/DE1755486B2/en active Pending
- 1968-05-17 AT AT478668A patent/AT285671B/en not_active IP Right Cessation
- 1968-05-24 GB GB24968/68A patent/GB1187517A/en not_active Expired
- 1968-05-30 YU YU1265/68A patent/YU31366B/en unknown
- 1968-05-31 FR FR1579549D patent/FR1579549A/fr not_active Expired
- 1968-05-31 US US733690A patent/US3537758A/en not_active Expired - Lifetime
- 1968-05-31 ES ES354565A patent/ES354565A1/en not_active Expired
- 1968-05-31 BE BE716043D patent/BE716043A/xx unknown
- 1968-06-01 JP JP43037318A patent/JPS4911895B1/ja active Pending
- 1968-06-04 SE SE07443/68A patent/SE337388B/xx unknown
Cited By (3)
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 |