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A semi-trailer vehicle with rear wheels capable of realizing electronic differential and reversing method

An electronic differential, semi-trailer technology, applied in the field of vehicles, can solve the problems of difficulty in reversing, folding, and large blind spots, and achieve the effect of reducing the time of reversing and improving the efficiency of reversing

Active Publication Date: 2021-07-16
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prone to dangerous situations such as folding and collision
In addition, the body of the semi-trailer train is too long and the blind spot is too large, which makes it difficult to reverse. To complete a reverse steering requires the driver to have rich driving experience and high-level driving skills.

Method used

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  • A semi-trailer vehicle with rear wheels capable of realizing electronic differential and reversing method
  • A semi-trailer vehicle with rear wheels capable of realizing electronic differential and reversing method
  • A semi-trailer vehicle with rear wheels capable of realizing electronic differential and reversing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, this embodiment provides a semi-trailer vehicle with rear wheels capable of realizing electronic differential speed, including ECU, differential knob, visual positioning system and front wheel steering assist mechanism, and a pair of wheels at the rear end of the semi-trailer are two independent wheels. Driven electric wheels; the differential knob can input different rear wheel differential values ​​to the ECU; the visual positioning system includes a visual recognition camera installed at the rear end of the semi-trailer, and the ECU can receive information from the visual recognition camera and generate an electronic map. The semi-trailer vehicle There is a monitor in the driver's cab, and the monitor can display the reversing trajectory of the semi-trailer on the electronic map under any differential value within the set range;

[0032] The ECU can calculate the corresponding front wheel deflection angle according to the differential signa...

Embodiment 2

[0044] Such as Figure 2-Figure 3 As shown, the present embodiment provides a method for reversing a semi-trailer, comprising the following steps:

[0045] The steering data model of the semi-trailer is established by using the deflection angle of the front wheel of the tractor, the size of the tractor and the semi-trailer, the speed difference between the two electric wheels at the rear end of the semi-trailer, and the preset inner wheel speed during reverse steering. ;

[0046] When reversing, if it is necessary to reverse and turn, first establish an electronic map of the rear end of the semi-trailer based on the visual recognition camera, and display it on the display;

[0047] By rotating the differential speed knob to transmit different differential speed values ​​to the ECU, the reversing trajectory of the semi-trailer vehicle is displayed on the electronic map, and when the reversing trajectory meets the reversing requirements, stop rotating the differential speed knob;...

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Abstract

The disclosure relates to a semi-trailer vehicle capable of realizing electronic differential speed on the rear wheels and a reversing method, including an ECU, a differential knob, a visual positioning system, and a front wheel steering assist mechanism. The pair of wheels at the rear end of the semi-trailer are two independently driven The electric wheel; the differential knob can input different rear wheel differential values ​​to the ECU; the visual positioning system includes a visual recognition camera installed at the rear end of the semi-trailer, and the ECU can receive information from the visual recognition camera and generate an electronic map. There is a monitor in the cab, which can display the reversing track of the semi-trailer on the electronic map under any differential speed value within the set range; the ECU can calculate it according to the differential speed signal and the preset inner electric wheel speed Find the corresponding front wheel deflection angle, and realize the steering of the front wheels through the front wheel steering assist mechanism.

Description

technical field [0001] The disclosure belongs to the technical field of vehicles, and in particular relates to a semi-trailer vehicle with rear wheels capable of realizing electronic differential speed and a reversing method. Background technique [0002] In the past ten years, with the continuous planning and construction of road facilities and the continuous increase of people's demand for many materials, the road transportation industry is in a stage of rapid development, and road transportation has gradually become an important mode of transportation. Semi-trailer trains with large transport tonnage, low transport cost and high transport efficiency have gradually occupied most of the road transport. [0003] The inventor has learned that the structure of the semi-trailer vehicle itself has the characteristics of heavy weight, high center of mass, and mutual coupling at the saddle, so that there are factors such as nonlinearity, instability, and uncertainty in the reverse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04B62D11/04
CPCB62D5/0463B62D11/003B62D11/04
Inventor 路玉峰柏贞远樊祥奔李春玲
Owner QILU UNIV OF TECH