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Rail vehicle anti-skid control system and method

A rail vehicle and control system technology, applied in the field of rail vehicle wheel anti-skid, can solve the problems of reducing the electric braking of the bogie and the loss of braking force, etc.

Active Publication Date: 2018-02-13
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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  • Rail vehicle anti-skid control system and method
  • Rail vehicle anti-skid control system and method
  • Rail vehicle anti-skid control system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032] figure 2An embodiment of a method for antiskid control of a rail vehicle is shown. The electronic brake control unit 100 uniformly calculates the degree of wheel skidding, and reduces skidding by adjusting electric braking and air braking.

[0033] The electronic brake control unit 100 calculates the rotation speed and deceleration of each wheel according to the frequency signals 16D, 17D, 18D, and 19D of each wheel rotation sent by the bogie units 400, 500, and judges the speed of a certain wheel and the maximum speed among 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 are not sliding (step S2, yes), and executes electric brake and air coordinated control (step S3): Figure 4 As shown, the electronic brake control un...

Embodiment approach 2

[0039] image 3 It represents another embodiment of the rail vehicle skid control method. The electronic brake control unit 100 uniformly calculates the degree of wheel skidding, and reduces skidding by adjusting electric braking and air braking.

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

[0041] The electronic brake control unit 100 preferentially executes the electric brake control (step S6): if Figure 4 As shown, the electric braking control unit 100 reduces the corresponding electric braking according to the sliding amount, and sends a...

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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 field of rail vehicle wheel anti-skid technology, in particular to a rail vehicle anti-skid control system and a method thereof. Background technique [0002] Rail vehicles basically adopt the braking method of composite braking, that is, electric braking is usually used first, and air braking is supplemented if the braking force is insufficient. 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, high efficiency and environmental protection, it is generally preferred to use electric braking when braking rail vehicles. When the electric brake does not meet the deceleration requirements, it is supplemented by the air brake. Electric braking and air braking are limited by the adhesion coefficient between the current wheel and rail. When the b...

Claims

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Application Information

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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
Owner NANJING CRRC PUZHEN HAITAI BRAKE EQUIP CO LTD
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