How to change the signal in Signal Builder Block from m-file?

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Mohammad
Mohammad 2017-4-24
编辑： Mohammad 2017-4-27
Hi, I am using "Signal Builder" block in a Simulink model and I am going to run it many times (using a for loop in a m-file). Now I want that in each run of simulation the Sampled Gaussian Noise generated by the signal builder block CHANGES to a new one by using a command from m-file instead of opening the Signal Builder block and replace the signal with a new one. I wonder how I can do that. Thanks, Mohammad

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回答（1 个）

Sebastian Castro
Sebastian Castro 2017-4-25
The Signal Builder block can be accessed programmatically with the signalbuilder function. Hopefully the examples in the following page can help you get started.
https://www.mathworks.com/help/simulink/slref/signalbuilder_cmd.html
If all you're doing is switching between existing signal groups and running the model, that should be fairly straightforward to do this way. If you're actually trying to create/load new data every run, I'd recommend doing this with an input port or From Workspace block instead.
Sebastian
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Mohammad
Mohammad 2017-4-27
编辑：Mohammad 2017-4-27
Hello Sebastian,
Thanks for your answer. I went through that page but I get a little confused. What I am actually trying to do is that in a for loop in each run I want Signal Builder block to generate a "new" sampled Gaussian Noise. It can be done in the block's page by going to Signal->Replace with->Sampled Gaussian Noise. Actually I want to do that in the m-file in each iteration. I hope I could convey my purpose well. I appreciate if you could help with me that.
Better saying: How can I tell the Simulink to generate "Sampled Gaussian Noise" in the signalbuilder block from command window?

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