I am trying to generate Random Road Profile Garde-C as per ISO-2631 using the shaping filter equation:
d/dt (Z_R (t))= -∝VZ_R (t)+ w(t)
where w(t) is a white noise process with the spectral density 2αVσ^2 .
here,
V= vehicle speed
α = 0.127
σ = standard deviation
The Table and Simulink Model used for Generating Road profile are shown below in the figure.
What value do I have to use in random Number Block to produce White Noise?
For Garde-C profile input parameter for Random Number block are taken as "Mean =0" , "Variance = 0.000064" and "Seed =0" .
But the profile is not coming as expected.
Am I selecting the right parameters for Random Number Block?
Dear Pankaj Sharma
This link might be helpful, have a look:
https://res.mdpi.com/d_attachment/symmetry/symmetry-13-00068/article_deploy/symmetry-13-00068-v2.pdf
Kind Regards
Qamar Ul Islam
Dear Qamar thanks for your reply. The paper available with this link uses Band Limited White Noise Block which asks for 3 inputs i.e "Noise Power", "Sample Time" and "Seed".
what parameter values are used or how to select them is not discussed.
What should be taken as Noise Power? Whether it is the Variance of the road profile or something else it is not clear.
I have gone through many papers but none of them discusses it in detail.
Dear Pankaj Sharma
You may also look here:
1. https://jp.mathworks.com/matlabcentral/profile/authors/12573217
2. https://www.mathworks.com/matlabcentral/answers/422911-road-profile-as-input-in-simulink
3. https://www.mdpi.com/2073-8994/13/1/68/pdf
Kind Regards
Qamar Ul Islam
Dear, Qamar you can use white noise icon and integrator icon together to represent random input to your system
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