How to implement an array in simulink?

x1=round(x1,3); x1=(0:0.001:50)'; y1=amplitude*sin(2*pi*x1/25)+1.75; This is the code to generate a sinewave function.Can someone please tell me how do we do this in simulink.I tried using a sin wave block as an input but that does not work.I have tried giving the input "x1' from workspace also.

Answer 1

[Ameer Hamza]

You didn't explain what does not work with Sine wave block. See the attached Simulink model to see how to use the Sinewave block to generate the required waveform. Also look at the setting of the Sine wave block.

[Sanjal C C]

i am sorry i need to give an input x1 in y equation but the input is an array from 0 to 50.So how do I do that in Simulink?

[Ameer Hamza]

In that case, try the attached Simulink model. First, run the following line and then start the simulation

t = (0:0.001:50)';
x = [t 2*pi*t/25];

[Sanjal C C]

thankx a lot for your help but the model does not work

[Sanjal C C]

I mean to say the attached model

[Ameer Hamza]

What is the error?

Answer 2

[Sanjal C C]

So this is the code I wanted to do it in Simulink?Can you please tell me how to do it?

[Ameer Hamza]

This is exactly the same as I gave in my comment, except that now you have 3 variables. You didn't write what is not working in the Simulink model I sent.

[Sanjal C C]

okay I am sorry the model is working right now but my doubt is in the image how do I input x1 values to workspace beacause I need it to use it the other function.I will attach that also.So I have attached the image which is what I need to model exactly in simulink.I used a user defined function bit it is not working.

[Ameer Hamza]

You can use several From Workspace blocks to import several variables from base workspace. Also, you can send the data back using To workspace block. You cannot directly implement a MATLAB function in Simulink. Simulink function block requires that the function should be able to process on a stream of data points because you don't know the entire data sequence in advance.

[Sanjal C C]

Hi this is the small part I tried in which i tried to take the value x1 from the script and i got the corresponding error message which I had attached.