A rail vehicle anti-skid control system and method thereof

A technology of rail vehicle and control method, which is applied to electric braking systems, vehicle components, railway vehicles, etc., can solve the problems of reducing the electric braking of bogies and the loss of braking force, etc.

Active Publication Date: 2020-02-11
NANJING CRRC PUZHEN HAITAI BRAKE EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not difficult to see that when the traction control unit detects that a certain wheel is slipping, it will reduce the electric braking of the entire vehicle or the entire bogie, causing excessive loss of braking force

Method used

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  • A rail vehicle anti-skid control system and method thereof
  • A rail vehicle anti-skid control system and method thereof
  • A rail vehicle anti-skid control system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032] figure 2 An embodiment of the anti-skid control method for rail vehicles is shown. The electronic brake control unit 100 uniformly calculates the degree of wheel slip, and reduces the slip by adjusting the electric brake and the air brake.

[0033] The electronic brake control unit 100 calculates the rotation speed and deceleration of each wheel according to the frequency signals 16D, 17D, 18D, 19D of each wheel rotation sent by the bogie units 400 and 500, and judges the speed of a certain wheel and the maximum speed of the four wheels When the difference exceeds a certain threshold (such as 10-20km / h) or the deceleration of a certain wheel exceeds a certain threshold (such as 5-15km / h / s), it will be judged that the wheel is sliding (step S1, Yes).

[0034] The electronic brake control unit judges that all wheels have not slipped (step S2, yes), and executes electric brake and air coordinated control (step S3): Figure 4 As shown, the electronic brake control unit 100 redu...

Embodiment approach 2

[0039] image 3 Another embodiment of the anti-skid control method for rail vehicles is shown. The electronic brake control unit 100 uniformly calculates the degree of wheel slip, and reduces the slip by adjusting the electric brake and the air brake.

[0040] The electronic brake control unit 100 calculates the rotation speed and deceleration of each wheel according to the frequency signals 16D, 17D, 18D, 19D of each wheel rotation sent by the bogie units 400 and 500, and judges the speed of a certain wheel and the maximum speed of the four wheels When the phase difference exceeds a certain threshold or the deceleration of a certain wheel exceeds a certain threshold, it is determined that the wheel is slipping (step S5, Yes).

[0041] The electronic brake control unit 100 preferentially executes the electric brake control (step S6): Figure 4 As shown, the electric brake control unit 100 reduces the corresponding electric brake according to the amount of coasting, and sends an ele...

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Abstract

The invention discloses a rail vehicle anti-skid control system and method. The system comprises an electronic brake control unit, a traction control unit, an air brake control unit, an anti-slid valve control unit and a bogie unit, wherein the traction control unit is used for receiving an electric brake reduction signal transmitted from the electronic brake control unit to reduce electric brakeor receive an electric brake switch-off signal to lock an inverter; the air brake control unit is used for receiving a current signal transmitted from the electronic brake control unit to supplement air brake; the anti-skid valve control unit is used for receiving a PWM signal transmitted from the electronic brake control unit to regulate air brake force of gliding wheels; and the bogie unit is used for converting air pressure into brake force, and simultaneously feeding back a wheel rotation frequency signal to the electronic brake control unit. The circumstance that brake force of other wheels are reduced to cause that the brake force is lost excessively can be avoided.

Description

Technical field [0001] The invention relates to the technical field of rail vehicle wheel anti-skid, in particular to a rail vehicle anti-skid control system and a method thereof. Background technique [0002] Rail vehicles basically adopt a composite braking method, that is, electric braking is usually given priority, and if the braking force is insufficient, air braking is added. Electric braking is a way for the traction control system to convert mechanical energy into electrical energy and feed the electrical energy back to the grid to achieve train braking. Because electric braking has the advantages of fast, efficient, and environmentally friendly, it is generally preferred to use electric braking when braking rail vehicles. When the electric brake does not meet the deceleration requirement, it is supplemented by the air brake. Electric brakes and air brakes are subject to the current adhesion coefficient between the wheels and rails. When the braking force exceeds the ad...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B60T8/17B60T8/1761B60L7/18B60L7/26
CPCB60L7/18B60L7/26B60L2200/26B60T8/1705B60T8/1761
Inventor罗飞平孙环阳杨磊杨硕
OwnerNANJING CRRC PUZHEN HAITAI BRAKE EQUIP CO LTD