MATLAB: How can i run different timelines in Simuink

clocksimulinksubsystemtime frames

Hi Guys. I have modeled a fate and transport system of contaminants in subsurface media with Simulink. This model consists of Subsystem 1 and Subsystem 2. The Problem is when I run the model, both Sub1 and Sub 2 run together but I want that the clock in Sub 2 starts with a delay respect to Sub1. In other words I want Sub 2 starts when sub 1 hit a specific time. I would be grateful if you help me through this.

Best Answer

Use "Enabled subsytem" block for both Subsytems.

Updated file attached. Sub system 1 tuns from 0-75s. Subsystem 2 runs from 75-100s taking the value from subsystem1 when t=75s. You can edit the trigger point as required.

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MATLAB: Read nx1 matrix from Matlab workspace into Simulink, but get the values one at a time

Use an index counter and extract the one array elements at every sample. It can be done in both Simulink and Stateflow.

Below is just idea using stateflow:

/* Initialization */
idxCtr = 0;
/* During */
out = myarray[idxCtr];
idxCtr = idxCtr+1;
if(idxCtr>9)
{
   idxCtr = 0; /* Depend on your logic you can freeze/reset the counter here.*/
}

You can send "out" to scope or any other block for further process.

MATLAB: How to run a simulation with a transfer function block and a multi dimensional input

I tested a model and found problems doing what you want, my workaround is:

Insert a sine wave block (f=2*pi*0.22 and phase=rand), tf block (your num and den)
Insert one mux block (three inputs) and the scope
Now copy and paste the sine wave block two times
Do the same for the transfer function block (paste it two times)
Connect the sine waves to each transfer function block
Connect the transfer functions outputs to the mux and the mux to the scope

Now with just one simulation you get three waves

Best Answer

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MATLAB: Read nx1 matrix from Matlab workspace into Simulink, but get the values one at a time

MATLAB: How to run a simulation with a transfer function block and a multi dimensional input

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