frequencyfunctionMATLABsimulinksine
I'm trying to add the following function on my Simulink model.
where C, B, and N are already variables in my file. Is the correct way to multiply omega by the gains 3N and N/2 an input that into the sine (as shown)
or should I change the value of the frequency? If so, what would be the right value?
Thanks
Code generation for OMAP-L138 EVM and C6748 EVM is not supported for older versions than Matlab 2011a.
For the release 2011a, the setup process is not trivial and it is not well documented. But Matlab has a patch for this version supports and works with certain specific requirements.
The release 2011b has improvements (hyperlinks required for products of thirds work with CCStudio v4 for this processor) and supports code generation for OMAP-L138 EVM and C6748 EVM.
For the release 2012a, Matlab has considered adding specific sections in the documentation for configuration and automatic code generation with these processors.
I was going about tackling this problem completely wrong. In order to replace the summing block, one must NOT remove the Transfer Function blocks which feed into the summing block and add them inside the script.
A MATLAB Function does not support code generation (and rightly so) such that a transfer function may be implemented inside it. That is why the blocks simply feed into the MATLAB Function as follows.
The script would very simply be:
function y1 = fcn(u1, u2, u3)
x = (u1 + u2 +u3);
y1 = x;
end
Best Answer
It really comes down to how much control you want.
\$f_1(\omega) = Csin(\frac{Nt}{2}\omega)\$
\$f_2(\omega) = Bsin(3Nt \omega)\$
In your two equations the gain (C,B) and frequency (N) are your tunabled. Your attempt to realize this in simulink is purely on gain which produces:
\$f_1(\omega) = \frac{N}{2}sin(\omega t)\$
\$f_2(\omega) = 3Nsin(\omega t)\$
If you want a sinus source matching these equations then use the source block configured appropriately
If you want to be able to vary the frequency and/or the amplitude use the SineWave function block. Feed in a ramp to set \$3N\omega\$ and an output gain block to set C
Your variables: B,C, N \$\omega\$ can then be set in an m-file or datadictionary.
IF you need these parameters varying this is also viable but a multiplying block is required and the ramp needs a varying slope (maybe via a mux)