MATLAB: Make up a timing in simulink

question

hello, Im trying to make up a timing in simulink. I mean my signal have to last 6s and turn off after. I have the Dspace Library linked with the Simulink one but i don't know which block can help me modelize my tempory signal. thank you

Best Answer

Hello , You can use Signal Builder block in Simulinik. This block will allow you to create your customized signal.

You can locate this block under Simulink--> Sources --> Signal Builder

Once you entered into that block you can simply add/ remove signals.

or else you Can also use step signal in simulink.

Related Solutions

MATLAB: How to get signals to repeat to infinity

I don't think this can be done using the Signal Builder block. It has only 3 options to set after final time. 'Hold final value', 'Set to Zero' or 'Extrapolate'. (File --> Simulation Options). You can instead try to use a 'Repeating Sequence' block.

Export data from Signal Builder to Workspace. (File --> Export to Workspace). For this example keep the variable name as channels.
Now your time data is specified by variables such as

channels(1).xData
channels(2).xData
          .
          .
          .
channels(n).xData

Your signal data is specified by variables such as

channels(1).yData
channels(2).yData
      .
      .
      .
channels(n).yData

Use a repeating sequence block and set Time Values and Output Values appropriately. You will have as many blocks as signals.

If you are planning on doing something like this quite often, you could create a masked subsystem that takes the entire channels variable and redistribute it to several programmatically created Repeating Sequence blocks underneath.

MATLAB: How do you get Signal Builder to import a mat file it exported

When you export data from the Signal Builder in R2011b, it exports it as a structure with all kinds of Signal Builder-specific information. Unfortunately, the Signal Builder cannot import that kind of structure.

If you open the doc page for importing with this command, you can see that you need to have a cell array or structure with time to import the data like you want:

>> web([docroot '/toolbox/simulink/ug/f15-109640.html'])

I think the easiest thing to do is:

Copy the Signal Builder to a new model
Connect the Signal Builder output to a To Workspace block
Change the To Workspace block to save a "Structure with time" to the workspace
Save the variable output by the To Workspace block to a MAT-file
Import that MAT-file to the Signal Builder

You could also just modify the variable exported by the Signal Builder, but I think this model approach is a bit easier/straightforward.

Best Answer

Related Solutions

MATLAB: How to get signals to repeat to infinity

MATLAB: How do you get Signal Builder to import a mat file it exported

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