Three-dimensional road surface elevation data generation method for vehicle dynamics research
A technology of vehicle dynamics and elevation data, which is applied in the field of 3D road surface elevation data generation in vehicle dynamics research, can solve problems such as fast simulation speed, difference in elevation power spectrum of curved trajectory, and slow simulation speed, so as to achieve good vehicle ride comfort and The effects of steering simulation, good road power spectrum characteristics, and small amount of calculation
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[0043] The present invention will be further described below in conjunction with specific examples and accompanying drawings.
[0044] According to attached figure 1 The technical flow chart shown is to generate road surface elevation data according to requirements in the MATLAB environment, and to test its road surface power spectrum characteristics.
[0045] The first step: compare the parameters in the one-dimensional road power spectrum power function formula (1) specified in GB7031-86
[0046] (1)
[0047] in: is the spatial frequency, that is, the reciprocal of the wavelength, is the reference spatial frequency, is the road surface roughness coefficient, different grades of road surface different. W is the frequency index, and it is the slope under the power spectral density double-logarithmic coordinate graph, which is taken as 2, is the power spectral density.
[0048] The unknown parameters in the rational function expression (2) of...
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