Setting block parameters programatically inside a simevents block's event actions

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Robert Kugler 2021-8-9

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https://ww2.mathworks.cn/matlabcentral/answers/895187-setting-block-parameters-programatically-inside-a-simevents-block-s-event-actions

回答： Abdolkarim Mohammadi 2021-9-2

Hello,

I would like to modify the batch size an entity batch creator applies after each batch creation (more specifically: after each created batch, the next batch size shall vary randomly). To do this, I would like to modify the block's parameter "Number of entities in batch" inside the following field (batch generate - since it's called right after batch generation):

From the documentation I understand that the parameter can be accessed through "NumberOfEntitiesInBatch". However, if I simply write NumberOfEntitiesInBatch = XYZ nothing happens/changes. The batch sizes don't seem to be set randomly after each batch creation. I assume I have to access it by something along the lines of thismodel.thisblock.NumberOfEntitiesInBatch = XYZ or so.

Can anyone let me know how to appy code correctly here? Thanks in advance!

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Answer 1

Abdolkarim Mohammadi 2021-9-2

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https://ww2.mathworks.cn/matlabcentral/answers/895187-setting-block-parameters-programatically-inside-a-simevents-block-s-event-actions#answer_779689

I do not have an exact solution for your problem, but I'm sure SimEvents' block parameters cannot be changed when the model is running. However, MDES (MATLAB Discrete-Event System) is a powerful block than enables you to create customized discrete-event blocks. I think there is a high chance you can solve your problem there.

https://www.mathworks.com/help/simevents/ref/matlabdiscreteeventsystem.html

Create Custom Blocks Using MATLAB Discrete-Event System Block - MATLAB & Simulink (mathworks.com)

Discrete-Event System Objects - MATLAB & Simulink (mathworks.com)