CN-121990009-A - Traction control method and system, traction controller and railway vehicle

CN121990009ACN 121990009 ACN121990009 ACN 121990009ACN-121990009-A

Abstract

The application discloses a traction control method, a traction control system, a traction controller and a railway vehicle, which relate to the technical field of rail transit and comprise the following steps: when the railway vehicle is in a static state and the load of the railway vehicle belongs to a preset load in a load set, determining one traction control characteristic curve corresponding to the preset load as a target traction control characteristic curve, wherein the traction control characteristic curve represents the corresponding relation between the speed of the railway vehicle and the traction force, and carrying out traction control based on the target traction control characteristic curve. The application can avoid the problems that the traction force is too large under the empty load to improve the adhering utilization rate of the wheel track, so that the vehicle is easy to idle and slide, or the starting traction force is too small under the heavy load to prolong the starting and accelerating time, and improves the traction control precision of the railway vehicle.

Inventors

WAN ZHENG
YANG XIAONA
WANG ZHI
FAN HONGWEI

Assignees

中车长春轨道客车股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260311

Claims (10)

1. A traction control method, characterized by comprising: when a railway vehicle is in a stationary state and the load of the railway vehicle belongs to a preset load in a load set, determining a traction control characteristic curve corresponding to the preset load as a target traction control characteristic curve, wherein the traction control characteristic curve represents the corresponding relation between the speed of the railway vehicle and the traction; and carrying out traction control based on the target traction control characteristic curve.
2. The traction control method according to claim 1, characterized in that when the load of the railway vehicle does not belong to the preset load in the load set, further comprising: Determining a preset load interval to which the load of the railway vehicle belongs as a target interval, wherein a first endpoint value and a second endpoint value of the preset load interval are two preset loads adjacent to each other in the load set, and the first endpoint value is larger than the second endpoint value; Determining a difference value between the load of the railway vehicle and the first end point value to obtain a first difference value, determining a difference value between the second end point value and the first end point value to obtain a second difference value, and determining a ratio of the first difference value to the second difference value to obtain a proportional position of the load of the railway vehicle in the target section; Determining a maximum traction force value in the traction control characteristic curve corresponding to the first endpoint value to obtain a first traction force value, and determining a maximum traction force value in the traction control characteristic curve corresponding to the second endpoint value to obtain a second traction force value; Determining a difference value between the first traction value and the second traction value to obtain a third difference value, and adding the second traction value to the product of the third difference value and the proportional position to obtain a target traction value corresponding to the load of the railway vehicle; When the speed of the railway vehicle is smaller than a crossing value, traction control is performed based on the target traction value, wherein the crossing value is the speed of the target traction value in a traction control characteristic curve corresponding to the first endpoint value; and when the speed of the railway vehicle is not less than the crossing value, carrying out traction control based on the traction control characteristic curve corresponding to the first endpoint value.
3. The traction control method according to claim 1, characterized in that the traction control method further comprises: Judging whether the load of the railway vehicle is in a vehicle load range or not; If the load of the railway vehicle is within the load range of the vehicle, determining whether the load of the railway vehicle belongs to a preset load in a load set; and if the vehicle load range is not within the vehicle load range, acquiring a preset traction control characteristic curve, and carrying out traction control based on the preset traction control characteristic curve.
4. The traction control method according to claim 1, wherein when the vehicle speed of the railway vehicle is smaller than a target vehicle speed, the traction corresponding to a larger preset load is larger than the traction corresponding to a smaller preset load in the target traction control characteristic.
5. The traction control method according to claim 1, characterized in that the traction control based on the target traction control characteristic curve includes: And setting a current traction control characteristic curve as the target traction control characteristic curve when the railway vehicle is in a state of stopping running, so that the railway vehicle performs traction control based on the target traction control characteristic curve when starting running.
6. The traction control method according to any one of claims 1 to 5, characterized in that the determination of the load of the railway vehicle includes: Determining the weight and/or number of carriers of the rail vehicle; the load of the rail vehicle is determined based on the weight and/or number of operators of the rail vehicle.
7. The traction control method of claim 6, wherein determining the number of occupants of the rail vehicle comprises: And determining the number of the passengers of the railway vehicle based on one or more of ticketing information, video information in the railway vehicle and infrared detection information in the railway vehicle.
8. A traction control system, comprising: The traction control characteristic curve determining module is used for determining one traction control characteristic curve corresponding to a preset load as a target traction control characteristic curve when the railway vehicle is in a static state and the load of the railway vehicle belongs to the preset load in a load set, wherein the traction control characteristic curve represents the corresponding relation between the speed of the railway vehicle and the traction force; And the traction control module is used for carrying out traction control based on the target traction control characteristic curve.
9. A traction controller comprising at least one processor and a memory coupled to the processor, wherein: the memory is used for storing a computer program; the processor is configured to execute the computer program to enable the traction controller to implement the traction control method according to any one of claims 1 to 7.
10. A railway vehicle is characterized in that, the rail vehicle comprising the traction controller of claim 9.

Description

Traction control method and system, traction controller and railway vehicle Technical Field The application relates to the technical field of rail transit, in particular to a traction control method, a traction control system, a traction controller and a rail vehicle. Background At present, a traction control characteristic curve of a rail transit vehicle is often controlled by adopting a fixed control curve. During traction control, a traction characteristic curve cannot be automatically adjusted according to load changes of a train, so that the train can only apply the same traction force under different loads, the acceleration of the train under different loads and the adhesion utilization rate difference of wheel tracks are increased, idle running and sliding problems under empty load are further caused, and the problems of slow starting and slow accelerating under heavy load affect the running efficiency and safety of the vertical lathe. Disclosure of Invention In view of the above problems, the application provides a traction control method, a traction control system, a traction controller and a railway vehicle, which can avoid the problems that the vehicle is easy to idle and slide due to the improvement of the adhesion utilization rate of wheel tracks caused by the overlarge traction force under the empty load, or the starting traction force is too small under the heavy load, and the starting and accelerating time is prolonged. The specific scheme is as follows: the first aspect of the present application provides a traction control method, including: when a railway vehicle is in a stationary state and the load of the railway vehicle belongs to a preset load in a load set, determining a traction control characteristic curve corresponding to the preset load as a target traction control characteristic curve, wherein the traction control characteristic curve represents the corresponding relation between the speed of the railway vehicle and the traction; and carrying out traction control based on the target traction control characteristic curve. In one possible implementation, when the load of the rail vehicle does not belong to the preset load of the load set, the method further includes: Determining a preset load interval to which the load of the railway vehicle belongs as a target interval, wherein a first endpoint value and a second endpoint value of the preset load interval are two preset loads adjacent to each other in the load set, and the first endpoint value is larger than the second endpoint value; Determining a difference value between the load of the railway vehicle and the first end point value to obtain a first difference value, determining a difference value between the second end point value and the first end point value to obtain a second difference value, and determining a ratio of the first difference value to the second difference value to obtain a proportional position of the load of the railway vehicle in the target section; Determining a maximum traction force value in the traction control characteristic curve corresponding to the first endpoint value to obtain a first traction force value, and determining a maximum traction force value in the traction control characteristic curve corresponding to the second endpoint value to obtain a second traction force value; Determining a difference value between the first traction value and the second traction value to obtain a third difference value, and adding the second traction value to the product of the third difference value and the proportional position to obtain a target traction value corresponding to the load of the railway vehicle; When the speed of the railway vehicle is smaller than a crossing value, traction control is performed based on the target traction value, wherein the crossing value is the speed of the target traction value in a traction control characteristic curve corresponding to the first endpoint value; and when the speed of the railway vehicle is not less than the crossing value, carrying out traction control based on the traction control characteristic curve corresponding to the first endpoint value. In one possible implementation, the traction control method further includes: Judging whether the load of the railway vehicle is in a vehicle load range or not; If the load of the railway vehicle is within the load range of the vehicle, determining whether the load of the railway vehicle belongs to a preset load in a load set; and if the vehicle load range is not within the vehicle load range, acquiring a preset traction control characteristic curve, and carrying out traction control based on the preset traction control characteristic curve. In one possible implementation, when the speed of the rail vehicle is less than the target speed, the traction force corresponding to the larger preset load is greater than the traction force corresponding to the smaller preset load in the target traction control characteristic