Railway vehicle air brake parking control method and system

A technology for air braking and rail vehicles, applied in the direction of brakes, etc., can solve the problems of inaccurate braking force, affecting the braking accuracy of rail vehicles, and the difficulty of obtaining the friction pair friction system of the electro-pneumatic braking system, so as to achieve high braking accuracy Effect

Active Publication Date: 2020-04-03
ZHUZHOU ELECTRIC LOCOMOTIVE CO
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Problems solved by technology

[0004] However, the braking force of the air braking system is related to the friction coefficient of the friction pair, and it is difficult for the electropneumatic braking system to obtain an accurate friction system of the friction pair, resulting in inaccurate braking force, which in turn affects the braking accuracy of rail vehicles

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  • Railway vehicle air brake parking control method and system
  • Railway vehicle air brake parking control method and system
  • Railway vehicle air brake parking control method and system

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[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Please refer to figure 1 and figure 2 Workflow diagram provided.

[0042] The embodiment of the present invention discloses a rail vehicle air brake parking control method, the steps include:

[0043] Ste...

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Abstract

The invention discloses a railway vehicle air brake parking control method. The method comprises: obtaining a first preset relation between the speed and the friction coefficient under different brakeforces; obtaining the current braking force and the current speed of the rail vehicle to obtain the current friction coefficient; correcting the current friction coefficient according to the obtainedcurrent deceleration to obtain a corrected friction coefficient; comparing whether a current deviation between the current deceleration and a preset deceleration is within a preset deviation range, and if so, obtaining a current braking force corresponding to the current friction coefficient; and if not, obtaining a corrected braking force corresponding to the corrected friction coefficient. Thecurrent friction coefficient is accurately obtained according to the current speed and the current braking force, the current friction coefficient is corrected to obtain the corrected friction coefficient, and the accurate friction coefficient is selected between the current friction coefficient and the corrected friction coefficient according to the current deceleration, so that the braking forceis closer to an accurate value, and the braking precision is higher. The invention further discloses a railway vehicle air brake parking control system.

Description

technical field [0001] The invention relates to the technical field of rail traffic control, in particular to an air brake parking control method and system for rail vehicles. Background technique [0002] The safety of rail vehicles depends to a large extent on the quality of the vehicle's automatic performance. In recent years, rail vehicles have developed towards high speed and heavy loads, which put forward higher requirements for the braking performance of rail vehicles. [0003] Existing rail vehicles generally have two sets of braking systems, one is an electric braking system provided by the traction system, and the other is an air braking system provided by an electropneumatic braking system. In view of the advantages of the electric braking system with small braking force output error, the electric braking system is preferred for parking braking when braking rail vehicles. When heavy-duty rail vehicles run on long downhills and other harsh working conditions, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/17B60T8/176B60T8/1763
CPCB60T8/1705B60T8/176B60T8/1763
Inventor 陈林段继超王丽何小军王娴
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO
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