Road Profile as Input in Simulink

Question

Sergio Rueda 2018-10-8

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/422911-road-profile-as-input-in-simulink

评论： Mert Buyukkopru 2022-4-4

Hi, i just created a PSD Road Profile, using the following code.

k = 3; % Values For ISO Road C-D Roughness Classification, from 3 to 9
V=40; % Car Velocity Km/h
L  = 250;  % Length Of Road Profile (m)
N=L/(V/3.6)*100; %  Number of data points
B  = L/N ; % Sampling Interval (m)
dn = 1/L;  % Frequency Band
n0 = 0.1;        % Spatial Frequency (cycles/m)
n  = dn : dn : N*dn; % Spatial Frequency Band
phi =  2*pi*rand(size(n)); % Random Phase Angle
Amp1 = sqrt(dn)*(2^k)*(1e-3)*(n0./n); % Amplitude for Road  Class A-B
x = 0:B:L-B; % Abscissa Variable from 0 to L
hx = zeros(size(x));
for i=1:length(x)
    hx(i) = sum(Amp1.*cos(2*pi*n*x(i)+ phi));
end
plot(x,hx)

Now, I need to use this road profile as input in a simulink half car suspension model that I have built. Hx and X are two 1x2250 arrays. Is there any way to do it? Thanks in advance.

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Mert Buyukkopru 2022-4-4

You can use from workspace block to get road input (your h(x) ) from Matlab workspace. You also need to create time vector start from 0 until vehicle stop.

https://www.mathworks.com/help/simulink/slref/fromworkspace.html

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Answer 1

Haritha 2018-10-24

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/422911-road-profile-as-input-in-simulink#answer_343158

Create a call back function in Simulink by using model explorer.

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Pankaj Chaurasia 2022-2-26

I am having same doubt, and i have created a call back function, now how to use this call back function it is not having an output port and i want to use it as input sourse for my system kindly tell me...

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