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Method and system for generating three-dimensional road profile

A three-dimensional, contour technology, applied in the field of simulation, can solve problems such as the two-dimensional simulation stage of the parking road spectrum, and achieve the effect of rigorous theory, strong passability, and accurate calculation

Inactive Publication Date: 2016-03-23
BAIC GRP ORV CO LTD
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Problems solved by technology

[0003] There are a variety of road spectrum simulation methods, such as integral white noise method, shaping filter white noise method, harmonic superposition method, etc., but currently basically stay in the two-dimensional simulation stage of road spectrum

Method used

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  • Method and system for generating three-dimensional road profile
  • Method and system for generating three-dimensional road profile

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Embodiment Construction

[0047] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0048] see figure 1 , an embodiment of the present invention provides a method for generating a three-dimensional pavement profile, the method comprising:

[0049] Step 101, smoothing the road surface power spectral density data collected by the real vehicle, and based on the standard road surface roughness power spectral density function model, using the harmonic superposition method to establish a three-dimensional road surface corresponding to the road surface data collected by the real vehicle contour equation;

[0050] Step 102, discretize the spatial frequency of the road surface power spectrum, and generate a three-dimensional road surface discrete contour model based on the contour equation of the three-dimensional road surface;

[0051] Step 1...

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Abstract

The invention provides a method and a system for generating a three-dimensional road profile. The method comprises: smoothing road power spectral density data acquired by a real vehicle, and establishing a profile equation of a three-dimensional road corresponding to the road data acquired by the real vehicle by using a harmonic superposition method based on a standard road unevenness power spectral density function model; discretizing the spatial frequency of road power spectra, and generating a three-dimensional road discrete profile model based on the profile equation of the three-dimensional road; performing power spectral density analysis on the generated three-dimensional road discrete profile model, and comparing with a standard road unevenness power spectral density function to verify the validity of the data and the model; and when the data and the model are valid, removing sharp boundaries from the generated three-dimensional road discrete profile model, thus constructing a three-dimensional road model with flat boundaries. The method and the system are simple and theoretically strict, and have strong passing ability to simulation test calculation.

Description

technical field [0001] The invention relates to the field of simulation technology, in particular to a method and system for generating a three-dimensional road profile. Background technique [0002] The generation of automobile pavement spectrum is one of the most important contents in the analysis of automobile virtual test. In the virtual test, the simulation of the road surface has an important impact on the simulation results, especially when evaluating the strength, durability, ride comfort and other factors of the vehicle, obtaining accurate road surface information is the key to the vehicle performance analysis. [0003] There are a variety of road spectrum simulation methods, such as integral white noise method, shaping filter white noise method, harmonic superposition method, etc., but currently basically stay in the two-dimensional simulation stage of road spectrum. In order to obtain accurate and detailed road surface information, it is necessary to establish a ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06F17/50
CPCG06F30/20G06T17/00
Inventor 骆振兴刘涛高岩姜军平徐达赵宇博江燕华
Owner BAIC GRP ORV CO LTD
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