CN-121973778-A - Power distribution control method, device and equipment for main vehicle traction and storage medium

CN121973778ACN 121973778 ACN121973778 ACN 121973778ACN-121973778-A

Abstract

The invention discloses a power distribution control method, a device, equipment and a storage medium for a main vehicle trailer, which relate to the technical field of vehicle power control and comprise the steps of receiving driving behavior signals and vehicle state signals, calculating total control torque according to the driving behavior signals and the vehicle state signals, determining first distribution torque and second distribution torque according to the total control torque, respectively sending the first distribution torque and the second distribution torque to the main vehicle and a trailer, so that the main vehicle and the trailer execute synchronous driving according to the first distribution torque and the second distribution torque, and executing synchronous driving based on the same target acceleration value by controlling the main vehicle and the trailer so as to eliminate relative dragging between the main vehicle and the trailer.

Inventors

PENG FU
WU JINLIN
ZHANG XU
LUO KEYANG
GAN YITING
DENG LITING
CHEN ZIYOU
LIU XIAOLIN
ZHAO SHANWEI
MO JIAHONG
WANG ZHIDONG
MA QIUXIANG
ZHENG ZHEN
Nong Xiangyun
ZHANG XUEQI
LI KAIDONG
ZHANG BO
LI YIFAN
HUANG JIAXIN
LI CHUNXIAO

Assignees

东风柳州汽车有限公司

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (10)

1. A power distribution control method for a host vehicle trailer, the method comprising: Receiving a driving behavior signal and a vehicle state signal, and calculating total control torque according to the driving behavior signal and the vehicle state signal, wherein the total control torque is total driving torque or total braking torque; Determining a first distributed torque and a second distributed torque according to the total control torque; and respectively transmitting the first distribution torque and the second distribution torque to a main vehicle and a trailer so that the main vehicle and the trailer execute synchronous driving according to the first distribution torque and the second distribution torque.
2. The method of claim 1, wherein the step of calculating a total control torque from the driving behavior signal and the vehicle status signal comprises: analyzing the driving behavior signal to obtain an accelerator depth signal or a brake depth signal; Analyzing the vehicle state signal to obtain a current vehicle speed signal, a gradient signal and a load signal; Calculating the accelerator depth signal, the current vehicle speed signal, the gradient signal and the load signal through a preset torque table look-up strategy to obtain a first required torque and a second required torque; And carrying out summation operation according to the first required torque and the second required torque to obtain total control torque.
3. The method of claim 2, wherein the step of calculating the throttle depth signal, the current vehicle speed signal, the grade signal, and the load signal via a preset torque look-up table strategy to obtain a first demand torque and a second demand torque comprises: Inquiring a preset accelerator opening and vehicle speed mapping table according to the accelerator depth signal and the current vehicle speed signal to obtain a basic torque value; according to the gradient signal and the load signal, inquiring a preset gradient load correction table to obtain a torque correction coefficient; Performing correction processing based on the basic torque value and the torque correction coefficient to obtain corrected target torque; and respectively inquiring a preset main vehicle torque distribution table and a preset trailer torque distribution table according to the corrected target torque to obtain a first required torque and a second required torque.
4. The method of claim 1, wherein the step of determining the first split torque and the second split torque based on the total control torque further comprises: Acquiring a first power capacity upper limit value of the main vehicle and a second power capacity upper limit value of the trailer; Comparing the total driving torque with the sum of the first power capacity upper limit value and the second power capacity upper limit value to obtain a comparison result; when the comparison result is that the total driving torque is smaller than or equal to the sum of the first power capacity upper limit value and the second power capacity upper limit value, distributing the total driving torque to obtain a first distributed torque and a second distributed torque according to the proportion of the first power capacity upper limit value and the second power capacity upper limit value; And when the comparison result is that the total driving torque is larger than the sum of the first power capacity upper limit value and the second power capacity upper limit value, setting the first distribution torque as the first power capacity upper limit value and setting the second distribution torque as the second power capacity upper limit value.
5. The method of claim 1, wherein the method further comprises: Receiving a gear signal, carrying out consistency check on the gear signal, and confirming that the gear state meets a preset condition when the gear signals of the main vehicle and the trailer are both forward gears or reverse gears; Receiving an accelerator depth signal, and calculating a target acceleration value according to the accelerator depth signal and a current vehicle speed signal; And calculating to obtain the total driving torque through a preset acceleration torque mapping table according to the target acceleration value, the current vehicle speed signal, the gradient signal and the load signal.
6. The method of claim 5, wherein the step of calculating a target acceleration value from the throttle depth signal and a current vehicle speed signal comprises: inquiring a preset accelerator opening range table according to the accelerator depth signal, and determining a target opening interval where the current accelerator is positioned; Inquiring a preset accelerator vehicle speed acceleration mapping table according to the target opening interval and the current vehicle speed signal to obtain an initial acceleration value; receiving a gradient signal, and inquiring a preset gradient resistance correction table according to the gradient signal to obtain a gradient resistance correction value; and correcting the initial acceleration value and the gradient resistance correction value to obtain a target acceleration value.
7. The method of claim 1, wherein the method further comprises: responding to a trapped trigger signal, wherein the trapped trigger signal is used for indicating that the main vehicle or the trailer is in a trapped state, and sending a trapped power command to a non-trapped vehicle so as to indicate that the non-trapped vehicle outputs a trapped torque greater than a preset standard upper limit value; and responding to the differential lock connection signal, generating a power sharing instruction according to the differential lock connection signal, and sending the power sharing instruction to the main vehicle and the trailer so that the main vehicle and the trailer can carry out power mutual transmission through the differential lock connection device.
8. A power distribution control device for a host vehicle hitch, the device comprising: The torque calculation module is used for receiving driving behavior signals and vehicle state signals and calculating total control torque according to the driving behavior signals and the vehicle state signals, wherein the total control torque is total driving torque or total braking torque; The torque distribution module is used for determining a first distribution torque and a second distribution torque according to the total control torque; And the command output module is used for respectively sending the first distribution torque and the second distribution torque to the main vehicle and the trailer so as to enable the main vehicle and the trailer to execute synchronous driving according to the first distribution torque and the second distribution torque.
9. A power distribution control apparatus of a host vehicle hitch, characterized in that the apparatus comprises a memory, a processor and a power distribution control program of a host vehicle hitch stored on the memory and operable on the processor, the power distribution control program of a host vehicle hitch being configured to implement the steps of the power distribution control method of a host vehicle hitch as claimed in any one of claims 1 to 7.
10. A storage medium having stored thereon a power distribution control program for a host vehicle, the power distribution control program for a host vehicle being executed by a processor to implement the steps of the power distribution control method for a host vehicle according to any one of claims 1 to 7.

Description

Power distribution control method, device and equipment for main vehicle traction and storage medium Technical Field The present invention relates to the field of vehicle power control technologies, and in particular, to a method, an apparatus, a device, and a storage medium for controlling power distribution of a main vehicle trailer. Background Along with the rapid development of the logistics transportation industry and the continuous increase of the heavy-load transportation demand, vehicles often face challenges of complex road conditions, high-gradient roads and high-load working conditions, the traditional single power source driving mode is difficult to meet the high-efficiency, safe and economic transportation requirements, and the cooperative driving of a main vehicle and a trailer becomes an important development direction for improving the power performance of the whole vehicle. At present, a main vehicle is usually provided with a complete power transmission system, a trailer is only used as a passive bearing device, the trailer is driven by the main vehicle to run, the trailer is not provided with any power driving system and is only provided with a braking system during braking, the economy is affected when the main vehicle drives the trailer to run due to the structure, the trailer pushes the main vehicle during braking to cause dragging loss, a single power source cannot adapt to complex working conditions, and an effective power cooperation and redundancy guarantee mechanism is lacked when the single vehicle is trapped or fails. The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art. Disclosure of Invention The invention mainly aims to provide a power distribution control method, device, equipment and storage medium for a main vehicle trailer, and aims to solve the technical problem of mutual towing caused by asynchronous power of the main vehicle and a trailer in the driving process. In order to achieve the above object, the present invention provides a power distribution control method for a main vehicle trailer, the power distribution control method for the main vehicle trailer comprising the steps of: Receiving a driving behavior signal and a vehicle state signal, and calculating total control torque according to the driving behavior signal and the vehicle state signal, wherein the total control torque is total driving torque or total braking torque; Determining a first distributed torque and a second distributed torque according to the total control torque; and respectively transmitting the first distribution torque and the second distribution torque to a main vehicle and a trailer so that the main vehicle and the trailer execute synchronous driving according to the first distribution torque and the second distribution torque. In one embodiment, the step of calculating the total control torque from the driving behavior signal and the vehicle state signal includes: analyzing the driving behavior signal to obtain an accelerator depth signal or a brake depth signal; Analyzing the vehicle state signal to obtain a current vehicle speed signal, a gradient signal and a load signal; Calculating the accelerator depth signal, the current vehicle speed signal, the gradient signal and the load signal through a preset torque table look-up strategy to obtain a first required torque and a second required torque; And carrying out summation operation according to the first required torque and the second required torque to obtain total control torque. In an embodiment, the step of calculating the accelerator depth signal, the current vehicle speed signal, the gradient signal and the load signal by using a preset torque table look-up strategy to obtain the first required torque and the second required torque includes: Inquiring a preset accelerator opening and vehicle speed mapping table according to the accelerator depth signal and the current vehicle speed signal to obtain a basic torque value; according to the gradient signal and the load signal, inquiring a preset gradient load correction table to obtain a torque correction coefficient; Performing correction processing based on the basic torque value and the torque correction coefficient to obtain corrected target torque; and respectively inquiring a preset main vehicle torque distribution table and a preset trailer torque distribution table according to the corrected target torque to obtain a first required torque and a second required torque. In an embodiment, the step of determining the first split torque and the second split torque according to the total control torque further includes: Acquiring a first power capacity upper limit value of the main vehicle and a second power capacity upper limit value of the trailer; Comparing the total driving torque with the sum of the first power capacity up