Method for generation of typical road spectrum

A road spectrum, typical technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as unfavorable regional analysis of regionalized vehicle market launch and research and development, and achieve results that are conducive to analysis and processing.

Active Publication Date: 2011-10-19
CHINA AUTOMOTIVE ENG RES INST
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Problems solved by technology

[0004] However, engineers often use a PSD curve of a random road section, or a PSD curve of simulated road data, which cannot reflect the PSD curve of all road characteristics in a r...

Method used

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  • Method for generation of typical road spectrum
  • Method for generation of typical road spectrum
  • Method for generation of typical road spectrum

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Embodiment Construction

[0030] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0031] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0032] Such as figure 1 As shown, the generation method of the typical road spectrum includes the following steps:

[0033] S101: Collect road pavement profile spatial domain data: collect test road pavement profile spatial domain data through the road surface data acquisition instrument and build a road spectrum database to form a road pavement profile spatial domain curve, wherein the abscissa of the road pavement profile spatial domain c...

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Abstract

The invention discloses a method for generation of a typical road spectrum, belonging to the technical field of road engineering and vehicle engineering. The method comprises the following steps: collecting the spatial domain data of a road pavement section and to form a spatial domain curve of the road pavement section, and then converting the spatial domain curve into a road spectrum curve by means of Fourier transform; operating a multi-octave pass band to filter the road spectrum curve; repeating the procedures above for all test roads to obtain all flat road spectrum curves and drawing the curves in the 8-grade road grading map of a double-log coordinate; and calculating the average values of all spectrum values in each octave and connecting the average values to obtain an overall typical road spectrum curve. The method can be used to generally evaluate and reflect the road pavement quality and evenness as well as the power distribution under different spatial frequencies. In addition, the method can grade the roads and perfom regional researches, and particularly has obvious advantages when being used for comparing and researching regional road differences in different regions.

Description

technical field [0001] The invention relates to a vehicle engineering design method, in particular to a generation method of a typical road spectrum. Background technique [0002] With the rapid development of the automobile industry, my country has become a major producer of the world's automobile industry. It has gone through the stages of imitation, technology introduction and processing and production, and has entered a new stage of independent research and development and independent innovation. In the field of automotive engineering in the independent research and development stage, road data is the main external excitation source for vehicles. Whether it is various indoor test bench performance tests or virtual simulation analysis in the computer, it is inseparable from the support of basic road data. Therefore, it is very important to accurately obtain the overall profile of the road surface roughness and road energy distribution in a certain area, because only by ac...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 段虎明马颖石锋严金霞张开斌谢飞
Owner CHINA AUTOMOTIVE ENG RES INST
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