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High-precision automobile and automobile train steering test method and system

A technology for automobile trains and testing methods, which is applied in the direction of vehicle steering/bump performance, etc., and can solve the problems of difficulty in ensuring the repeatability and accuracy of vehicle tracking, difficulty in accurately observing the coincidence degree of vehicles and marking lines, and difficulty in tracking, etc. , to achieve the effect of solving the driver's difficulty in tracking, reducing the difficulty of operation and test risk, and improving the accuracy and repeatability

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

AI Technical Summary

Problems solved by technology

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

Method used

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  • High-precision automobile and automobile train steering test method and system
  • High-precision automobile and automobile train steering test method and system
  • High-precision automobile and automobile train steering test method and system

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Embodiment 1

[0117] see figure 2 As shown, embodiment 1 of the present application provides a kind of high-precision automobile and automobile train steering test method, and it comprises the following steps:

[0118] S1: On the test site, turn to the driving vehicle to obtain an initial arc trajectory;

[0119] S2: Calculate the initial turning radius of the initial arc trajectory;

[0120] In the embodiment of the present application, the initial turning radius is obtained by fitting the initial arc trajectory.

[0121] S3: If the initial turning radius is not within the range of the preset target radius, adjust the steering wheel angle, continue to turn and drive, obtain a new arc trajectory, and recalculate the turning radius of the new arc trajectory until the turning radius is within the preset target within the radius, and take the steering wheel angle at this time as the target angle;

[0122] S4: Keep the target angle of rotation and continue to turn and drive until the steeri...

Embodiment 2

[0233] see image 3 As shown, Embodiment 2 of the present application provides a high-precision vehicle steering tracking test system, which includes a GPS positioning system, a portable base station, a data acquisition device, a display, a dynamometer steering wheel, and a data acquisition device with a steering test software system. The software system includes a real-time calculation module, a judgment module, an acquisition module and a post-processing module.

[0234] The real-time calculation module is used to calculate the initial turning radius of the initial arc trajectory; wherein, the initial arc trajectory is obtained by turning the vehicle on the test site;

[0235] The judging module is used to judge whether the initial turning radius is within the preset target radius range; if the initial turning radius is not within the preset target radius range, adjust the steering wheel angle, continue steering, and obtain a new arc trajectory, and pass the real-time calcul...

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Abstract

The invention relates to a high-precision automobile and automobile train steering test method and system, and relates to the technical field of vehicle safety, and the method comprises the steps: steering a running vehicle on a test site, and obtaining an initial arc-shaped track and an initial turning radius; if the initial turning radius is not within the preset target radius range, adjusting the turning angle of the steering wheel, continuing to steer and run to obtain a new arc-shaped track, recalculating the turning radius of the new arc-shaped track until the turning radius is within the preset target radius range, and taking the turning angle of the steering wheel at the moment as a target turning angle; keeping the target turning angle to continuously steer to the departure position, and forming a target arc-shaped track; returning the steering wheel, linearly driving for a certain distance from the departure position and then stopping; in the straight driving process, a first driving track and a second driving track of a first measuring point and a second measuring point on the vehicle are obtained; fitting the first driving track into a tangent line; and calculating the maximum distance between the second driving track and the tangent line, and taking the maximum distance as a driving-away outward swinging value of the vehicle.

Description

technical field [0001] The present application relates to the technical field of vehicle safety, in particular to a high-precision automobile and automobile train steering 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 incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/06
CPCG01M17/06
Inventor 吴笛吕渤赵俊杰黄柏杨彭前进
Owner XIANGYANG DAAN AUTOMOBILE TEST CENT
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