Need help with getting a function to SIMULINK
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Hello, I am producing a FM Signal using the following message signal
fs=1000;
t = 0:1/fs:2;
m =@(t) -sawtooth(2*pi*(t+0.5)) ;
I want to input this m function as it is to SIMULINK using simin block to repeat the same modulation process but with blocks. Sorry for it's a silly question, but im still new with SIMULINK. Thanks in advance
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Bhavana Sapparapu
2022-11-3
Hi Abdelrhman Abdelfatah,
I understand that you want to create a Simulink source block that can generate an FM signal using the "m" function that you have provided. This is same as loading a "timeseries" data generated using the "m" function into the Simulink model using a "From Workspace" (simin) block.
The following documentation provides an example as to how to load timeseries data using the "simin" block in a Simulink model:
More specifically, look at the "Load timeseries Data" section in the documentation:
As shown in the example, you can do the following in your Simulink file:
- Create a "Callback Button" block, populate the "ClickFcn" with the following code and click on the button (or) go to Model Settings > Model Properties > Callbacks and populate the "InitFcn" with the following code:
fs = 1000;
t = 0:1/fs:2;
m = @(t)-sawtooth(2*pi*(t+0.5));
d = m(t);
simin = timeseries(d,t);
- Add a "From Workspace" (simin) block to your Simulink model.
- Connect it to a "Scope" block or an "Out" block to view the results.
- Change the simulation "Stop Time" to 2.0s (since your upper bound for t is 2).
- Update the model and run.
The result would look like something as follows:
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