CN-117533358-B - Constant-speed operation control method and device for train set

CN117533358BCN 117533358 BCN117533358 BCN 117533358BCN-117533358-B

Abstract

The application provides a train set constant-speed operation control method and device, which can be used in the technical field of train network control. The method comprises the steps of obtaining the actual speed of a train unit, determining an acceleration set value according to the actual speed and the target speed if the actual speed of the train unit is larger than the target speed, determining an acceleration correction value according to the current running condition of the train unit, determining a corrected acceleration set value according to the acceleration set value and the acceleration correction value, and performing speed adjustment on the train unit according to the corrected acceleration set value until the train unit runs at the target speed at a constant speed. The application provides a train set constant-speed operation control method and a device, which take current operation conditions of a train into consideration when the speed of the train set is regulated, so that the train set constant-speed operation control method provided by the application has stronger adaptability.

Inventors

ZHANG XIAOJIN
CAO HONGFA
KANG JINGHUI
XUE JIANG
Pan Quanzhang
GAO FENG
ZHANG SHUNGUANG
ZHANG ZHELONG
XIA FEI
ZHAO HONGWEI
YAO FANG
ZHANG BO
YANG WEIJUN

Assignees

中国铁道科学研究院集团有限公司
北京纵横机电科技有限公司
中国铁道科学研究院集团有限公司机车车辆研究所
铁科纵横（天津）科技发展有限公司

Dates

Publication Date: 20260508
Application Date: 20231127

Claims (12)

1. A train set constant speed operation control method, characterized by comprising: acquiring the actual speed of a train set; if the actual speed of the train set is greater than the target speed, determining an acceleration set value according to the actual speed and the target speed; Determining an acceleration correction value according to the current running condition of the train set; determining a corrected acceleration set value according to the acceleration set value and the acceleration correction value; speed adjustment is carried out on the train set according to the corrected acceleration set value until the train set runs at the target speed at a constant speed; the determining the acceleration correction value according to the current running condition of the train set comprises the following steps: If the difference value between the actual speed and the target speed is smaller than a second threshold value, or the electric brake control is finished and is not in a releasing stage and a constant deceleration stage, determining that the acceleration correction value is 0; If the CTCS mode of the train set is not activated and the difference value between the actual speed and the target speed is larger than a first limit value, performing linear interpolation on a first maximum acceleration correction amount according to the difference value between the actual speed and the reference speed of the current operation condition to obtain an acceleration correction value; If the CTCS mode of the train set is activated and the difference between the actual speed and the target speed is greater than a second limit value, linear interpolation is performed on a second maximum acceleration correction amount according to the difference between the actual speed and the reference speed of the current operation condition to obtain an acceleration correction value.
2. The method of claim 1, wherein said determining an acceleration setting from said actual speed and said target speed comprises: If the difference value between the actual speed and the target speed is larger than a first threshold value, determining an acceleration set value as a first set value; And if the difference between the actual speed and the target speed is between 0 and the first threshold value, performing linear interpolation between 0 and the first set value to obtain an acceleration set value.
3. The method of claim 1, wherein linearly interpolating the first maximum acceleration correction based on the difference between the actual speed and the reference speed for the current operating condition to obtain the acceleration correction comprises: according to the difference value of the actual speed and the reference speed of the current operation condition, performing linear interpolation on the first maximum acceleration correction amount to obtain an acceleration correction reference value; multiplying the acceleration correction reference value by a first coefficient to obtain an acceleration correction value, wherein the first coefficient is determined according to the current running condition of the train set; The step of performing linear interpolation on the second maximum acceleration correction to obtain an acceleration correction value according to the difference between the actual speed and the reference speed of the current operation condition includes: according to the difference value of the actual speed and the reference speed of the current operation condition, performing linear interpolation on a second maximum acceleration correction amount to obtain an acceleration correction reference value; And multiplying the acceleration correction reference value by a second coefficient to obtain an acceleration correction value, wherein the second coefficient is determined according to the current running condition of the train set.
4. The method of claim 1, wherein said speed adjusting said train consist according to said corrected acceleration setting until said train consist is operating at a constant speed at said target speed comprises: Determining whether the train set currently meets the ending condition of a braking control stage according to the difference value between the actual speed and the target speed; if the train set currently meets the ending condition of the braking control stage, taking the acceleration difference value between the current actual acceleration of the train set and the corrected acceleration set value as the input of PI regulation, and calculating the target braking force required by the train set speed regulation stage; Braking the train set according to the target braking force; and if the difference between the actual acceleration of the train set after braking and the corrected acceleration set value is equal to 0, determining that the train set runs at the target speed at a constant speed.
5. The method of claim 4, wherein if the train set currently satisfies an end condition of a brake control phase, calculating a target braking force required for the train set adjustment phase using an acceleration difference between a current actual acceleration of the train set and the corrected acceleration set value as an input for PI adjustment comprises: If the train set currently meets the ending condition of the braking control stage, judging whether the pure electric braking can meet the constant-speed running requirement of the train set or not; If the pure electric braking can meet the constant-speed running requirement of the train set, taking the acceleration difference value between the current actual acceleration of the train set and the corrected acceleration set value as the input of PI adjustment, and calculating the target braking force required by the train set adjustment stage, wherein the target braking force comprises the pure electric braking force.
6. The method of claim 5, wherein after determining whether the pure electric brake is capable of meeting the constant speed operating demand of the train consist, the method further comprises: if the pure electric brake cannot meet the constant-speed running requirement of the train set, correcting the acceleration difference value between the current actual acceleration of the train set and the corrected acceleration set value to obtain a corrected acceleration difference value; And taking the corrected acceleration difference value as input of PI regulation, and calculating target braking force required by the train set adjustment stage, wherein the target braking force comprises pure electric braking force and air braking force.
7. The method of claim 4, wherein after braking the train set according to the target braking force, the method further comprises: If the difference between the actual acceleration of the train set after braking and the corrected acceleration set value is not equal to 0, judging whether the actual speed of the train set is greater than the target speed; If the actual speed of the train set is greater than the target speed, determining an acceleration set value according to the actual speed and the target speed; Determining an acceleration correction value according to the current running condition of the train set; determining a corrected acceleration set value according to the acceleration set value and the acceleration correction value; And adjusting the speed of the train set according to the corrected acceleration set value until the train set runs at the target speed at a constant speed.
8. The method of claim 4, wherein after determining whether the train set currently satisfies an end condition of a brake control phase based on a difference between the actual speed and the target speed, the method further comprises: if the train set does not meet the ending condition of the braking control stage currently, determining a braking mode of the train set according to the difference value between the actual speed and the target speed, wherein the braking mode comprises pattern braking, deceleration controlled braking and significant braking; And braking the train set in the braking mode until the train set meets the ending condition of the braking control stage.
9. The method of claim 8, wherein the end condition of the brake control phase includes an actual acceleration of the train consist being greater than a set acceleration.
10. A train set constant speed operation control device, comprising: the acquisition module is used for acquiring the actual speed of the train set; the first determining module is used for determining an acceleration set value according to the actual speed and the target speed if the actual speed of the train set is greater than the target speed; the second determining module is used for determining an acceleration correction value according to the current running condition of the train set; The third determining module is used for determining a corrected acceleration set value according to the acceleration set value and the acceleration correction value; the speed adjusting module is used for adjusting the speed of the train set according to the corrected acceleration set value until the train set runs at the target speed at a constant speed; The second determining module is specifically configured to: If the difference value between the actual speed and the target speed is smaller than a second threshold value, or the electric brake control is finished and is not in a releasing stage and a constant deceleration stage, determining that the acceleration correction value is 0; If the CTCS mode of the train set is not activated and the difference value between the actual speed and the target speed is larger than a first limit value, performing linear interpolation on a first maximum acceleration correction amount according to the difference value between the actual speed and the reference speed of the current operation condition to obtain an acceleration correction value; If the CTCS mode of the train set is activated and the difference between the actual speed and the target speed is greater than a second limit value, linear interpolation is performed on a second maximum acceleration correction amount according to the difference between the actual speed and the reference speed of the current operation condition to obtain an acceleration correction value.
11. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any one of claims 1 to 9 when the computer program is executed by the processor.
12. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method according to any one of claims 1 to 9.

Description

Constant-speed operation control method and device for train set Technical Field The application relates to the technical field of train network control, in particular to a train set constant-speed operation control method and device. Background The constant-speed running of the motor train unit is an important mode in normal running, and is a necessary functional requirement of a train. The research of the constant speed control method of the train network control system of the high-speed motor train unit has very important practical significance. When the high-speed motor train unit is in the constant-speed control mode, a driver can reduce the operation of a plurality of traction handles and braking handles, so that the labor intensity of the driver is effectively reduced, and the operation complexity of the driver is reduced. And the energy consumption is effectively saved. The precision and stability of the constant speed control can ensure the comfort level of the passenger riding. The low constant speed mode can also conveniently realize special requirements such as coupling, car washing and the like. The good constant speed control method can reduce impulse rate in the constant speed running process, can quickly stabilize to the target speed running, can reduce switching frequency between traction and braking states, and can reduce the probability of occurrence of idle running or sliding of wheels of a train. Conventional control methods have focused on the locomotive field, using speed differences as inputs for PI control. The methods have no subdivision working conditions and the adaptability is required to be improved. Disclosure of Invention Aiming at the problems in the prior art, the embodiment of the application provides a train set constant-speed operation control method and device, which can at least partially solve the problems in the prior art. In one aspect, the application provides a method for controlling constant-speed operation of a train set, which comprises the following steps: acquiring the actual speed of a train set; if the actual speed of the train set is greater than the target speed, determining an acceleration set value according to the actual speed and the target speed; Determining an acceleration correction value according to the current running condition of the train set; determining a corrected acceleration set value according to the acceleration set value and the acceleration correction value; And adjusting the speed of the train set according to the corrected acceleration set value until the train set runs at the target speed at a constant speed. In some embodiments, the determining an acceleration setting from the actual speed and the target speed comprises: If the difference value between the actual speed and the target speed is larger than a first threshold value, determining an acceleration set value as a first set value; And if the difference between the actual speed and the target speed is between 0 and the first threshold value, performing linear interpolation between 0 and the first set value to obtain an acceleration set value. In some embodiments, the determining the acceleration correction value based on the current operating condition of the train set includes: If the difference value between the actual speed and the target speed is smaller than a second threshold value, or the electric brake control is finished and is not in a releasing stage and a constant deceleration stage, determining that the acceleration correction value is 0; If the CTCS mode of the train set is not activated and the difference value between the actual speed and the target speed is larger than a first limit value, performing linear interpolation on a first maximum acceleration correction amount according to the difference value between the actual speed and the reference speed of the current operation condition to obtain an acceleration correction value; If the CTCS mode of the train set is activated and the difference between the actual speed and the target speed is greater than a second limit value, linear interpolation is performed on a second maximum acceleration correction amount according to the difference between the actual speed and the reference speed of the current operation condition to obtain an acceleration correction value. In some embodiments, the performing linear interpolation on the first maximum acceleration correction to obtain the acceleration correction value according to the difference between the actual speed and the reference speed of the current operation condition includes: according to the difference value of the actual speed and the reference speed of the current operation condition, performing linear interpolation on the first maximum acceleration correction amount to obtain an acceleration correction reference value; multiplying the acceleration correction reference value by a first coefficient to obtain an acceleration correction value, wherein the fir