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High-precision vehicle steering tracking test method and system

A test method and high-precision technology, which is applied in the direction of vehicle steering/bump performance, etc., can solve the problems such as difficulty in ensuring the repeatability and accuracy of vehicle tracking, difficulty in accurately observing the coincidence between the vehicle and the marking line, and difficulty in tracking , to achieve the effect of solving the driver's difficulty in tracking, reducing driving difficulty and test risk, and improving accuracy and repeatability

Active Publication Date: 2022-04-26
XIANGYANG DAAN AUTOMOBILE TEST CENT
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The embodiment of the present application provides a high-precision vehicle steering tracking test method and system to solve the problem that in the related art, the driver is limited by the angle of view when driving, and it is difficult to accurately observe the coincidence degree between the vehicle and the marking line, the tracking is difficult, and the vehicle tracking is difficult. It is difficult to guarantee the repeatability and accuracy of track driving

Method used

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  • High-precision vehicle steering tracking test method and system
  • High-precision vehicle steering tracking test method and system
  • High-precision vehicle steering tracking test method and system

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Experimental program
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Embodiment 1

[0073] see figure 2 and image 3 As shown, implementation 1 of the present application provides a high-precision vehicle steering tracking test method, which includes the following steps:

[0074] S1: Determine the coordinate system of the test site;

[0075] S2: Select a point in the coordinate system as the starting point 10 of the steering circle 1, and determine the position of the center O according to the radius R of the steering circle 1;

[0076] S3: Draw a turning circle 1 in the coordinate system;

[0077] S4: According to the steering circle 1 and the preset maximum allowable error ratio a, draw the inner circle 2 and the outer circle 3, and a turning channel is formed between the inner circle 2 and the outer circle 3; The inner circle and the outer circle of circle 1 are arranged concentrically with the steering circle 1, and the difference between the radius of the inner circle 2 and the outer circle 3 and the radius of the steering circle 1 is aR;

[0078] S...

Embodiment 2

[0139] see Figure 4 As shown, Embodiment 2 of the present application provides a high-precision vehicle steering tracking test system, including a GPS antenna, a portable base station, a data acquisition device, a display, a dynamometer steering wheel, and a steering test software system installed in the data acquisition device. The steering test software system includes acquisition module, coordinate transformation module, drawing module, real-time acquisition module, display module and calculation module.

[0140] The specific installation method of the high-precision vehicle steering tracking test system is as follows:

[0141] During the test, install a GPS antenna on the first measuring point 7 and the second measuring point 8 of the vehicle respectively, collect the tracks of the first measuring point 7 and the second measuring point 8, and set up a portable base station on the test site to improve the GPS positioning accuracy to ≤ 2cm, the dynamometer steering wheel i...

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Abstract

The invention relates to a high-precision vehicle steering tracking test method and system, and relates to the technical field of vehicle safety, and the test method comprises the steps: determining a coordinate system of a test site; selecting one point in the coordinate system as a starting point of a steering circle, and determining the position of the circle center according to the radius of the steering circle; a steering circle, an inner circle and an outer circle are drawn in the coordinate system, and a steering channel is formed between the inner circle and the outer circle; selecting a point on the steering circle as a driving-out point, and drawing a theoretical tangent line which passes through the driving-out point and is tangent to the steering circle; drawing an inner tangent line and an outer tangent line according to the theoretical tangent line and a preset maximum allowable error value, and forming a linear channel between the inner tangent line and the outer tangent line; in a test, acquiring coordinates of the first measuring point in real time, and generating a motion track; meanwhile, the steering channel, the linear channel and the movement track are displayed in real time, so that the movement track is located in the steering channel and the linear channel all the time; and in the driving process in the linear channel, calculating the driving-away outer swing value of the vehicle by taking the theoretical tangent line as a reference.

Description

technical field [0001] The present application relates to the technical field of vehicle safety, in particular to a high-precision vehicle steering tracking test method and system. Background technique [0002] According to the provisions of GB17675-2021 "Basic Requirements for Automobile Steering System", automobiles and automobile trains are required to travel according to the trajectory specified in the standard, and the steering time, steering force, channel width, steering radius of a certain point on the vehicle, and departure distance are measured during vehicle driving. Parameters such as the swing value have put forward higher requirements on the turning radius of the steering circle, vehicle speed, and vehicle driving route, and the evaluation indicators of vehicle steering performance have also changed greatly. In addition to the need to measure the steering wheel steering force and steering time In addition, the newly added measurement results include: the change...

Claims

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Application Information

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IPC IPC(8): G01M17/06
CPCG01M17/06
Inventor 吴笛黄柏杨彭前进赵俊杰刘福坤
Owner XIANGYANG DAAN AUTOMOBILE TEST CENT
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