GB936574A - Improvements in and relating to locomotive control systems - Google Patents
Improvements in and relating to locomotive control systemsInfo
- Publication number
- GB936574A GB936574A GB25230/62A GB2523062A GB936574A GB 936574 A GB936574 A GB 936574A GB 25230/62 A GB25230/62 A GB 25230/62A GB 2523062 A GB2523062 A GB 2523062A GB 936574 A GB936574 A GB 936574A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- relay
- locomotive
- power
- potentiometer
- 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
- 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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/32—Control or regulation of multiple-unit electrically-propelled vehicles
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
936,574. Control of D.C. motors. GENERAL RAILWAY SIGNAL CO. July 2, 1962 [Aug. 24, 1961], No. 25230/62. Class 38 (3). [Also in Group XXXV] A train comprises main locomotive 6 and helper locomotive 8, a strain gauge 10 being connected to coupling 11. A system is provided for bringing the force exerted upon the coupling to zero or for maintaining the force at the coupling in either tension or compression so that the helper locomotive will afford a predetermined portion of the total tractive effort. When the strain gauge is subjected to no force there is no output from amplifier 16 to summing device 24. The output of unit 34, representing the speed of licomotive 8, causes pilot motor M54 to position potentiometers 54P1-54P4 in accordance with speed. A change of voltage across main traction generator 41 (Fig. 1A) causes relay R51 to operate motor M51 until potentiometer 51P1 is adjusted so that arms 65, 66 have the same potential, the position of arm 65 representing an analogue of the voltage across bus-bars 42, 43. Similarly, a positioning unit 52 is controlled by the voltage across resistor 125 which indicates the traction current. This current analogue is multiplied by the voltage analogue to obtain an indication of the horse-power developed by means of a circuit comprising potentiometers 51P2, 52P2, 53P1 and relay R53. When the voltage across this relay is balanced, arms 72, 73 are in positions representing the horse-power. A circuit comprising potentiometers 54P2, 55P1, 53P2 and relay R55 has the effect of dividing the horse-power by the speed to produce a torque signal. This voltage analogue of the torque is conducted by potentiometer 55P2 to summing device 24. The analogue of the torque as represented on potentiometer 56P2 is multiplied by the analogue of the speed on potentiometer 54P3 whereby potentiometers 57P2, 57P3 are positioned in accordance with the horse-power required. The position of arm 101 is determined by the positions of arms 88, 90 to select the proper throttle setting for the prime mover driving the traction generator. If the main locomotive applies more power, a tensile stress applied to coupling 11 causes strain gauge 10 to unbalance its bridge circuit, the output of which is amplified and smoothed before being delivered to summing device 24. Relay R56 is unbalanced and the potential across relay R57 changes so that arm 101 advances to increase the throttle setting until the locomotive 8 is pulling its share of the load. When the main locomotive is braked, the force upon coupling 11 is compressive causing a reverse potential from strain gauge 10 for application to the summing device 24. Switch 57S1 is moved to de-energize relay DBR so that control apparatus 40 is prepared for dynamic braking. Traction motors 45, 46 act as generators (Fig. 1C) connected to resistors 126, 127, the motor field windings 47, 48 being excited by the main generator 41. Potentiometer 57P3 controls the field of the generator. Potentiometers 58P1, 59P1 are positioned in accordance with the braking voltage and current, whilst potentiometer 61P1 indicates the brake horse-power. Potentiometer 60P2 applies a voltage indicating the braking torque to the summing device 24. This braking torque signal when summed with the strain signal balances the relay R56 whereby arm 90 of switch 57S1 still rests on the same quadrant. If the strain signal is increased, motor M57 operates arm 112 to increase the generator excitation so producing an additional braking horse-power output. The application of the brakes on the main locomotive causes the control apparatus 40 to return to the " idle " position. When the train starts the arm 101 will be placed in its maximum position, the unit 40 being controlled by speed-responsive filters 37, 38, 39, and associated relays 4R, 6R, 10R, so that as the train accelerates the next higher power wire leading to the unit 40 is energized. Each of these higher power wires provides more horsepower. When the train operates in a reverse direction, a relay 26 pole-changes the output from the strain gauge 10. The helper locomotive may be arranged to push those cars that are coupled in front of it, or the main locomotive may aid the helper locomotive in pulling the cars which are coupled thereto. In these circumstances there is normally either a compressive or tensile force on the coupling, and a biasing voltage is provided which opposes the output voltage from the strain gauge. This biasing voltage is obtained from potentiometers which are added to the unit 56 and its value is determined by the torque required of the helper locomotive. In another embodiment, the summing device 24 is provided with a voltage analogue of the horse-power instead of the torque. A plurality of lamps may be controlled by the arm 101 of switch 100 to serve as an indicator for manual adjustment of the various throttle and brake settings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13368661A | 1961-08-24 | 1961-08-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB936574A true GB936574A (en) | 1963-09-11 |
Family
ID=22459836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25230/62A Expired GB936574A (en) | 1961-08-24 | 1962-07-02 | Improvements in and relating to locomotive control systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB936574A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0208756B1 (en) * | 1985-01-17 | 1989-04-05 | Peritate Limited | Slave unit |
CN114261289A (en) * | 2021-12-06 | 2022-04-01 | 中车株洲电力机车有限公司 | Rail transit vehicle, internal electric fusion power system thereof and control method |
-
1962
- 1962-07-02 GB GB25230/62A patent/GB936574A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0208756B1 (en) * | 1985-01-17 | 1989-04-05 | Peritate Limited | Slave unit |
CN114261289A (en) * | 2021-12-06 | 2022-04-01 | 中车株洲电力机车有限公司 | Rail transit vehicle, internal electric fusion power system thereof and control method |
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