Persistent variable clear after simulation with simulink

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octus_ma
octus_ma 2016-5-25
回答： octus_ma 2016-5-26
Hello, i have a problem, where I need help. I have decleared and initilized a persistent variable var in a Matlab Embedded Function in Simulink. For example
persistent var
if isempty(var)
var= 1
end
I noticed that the variable doesn't exist after the simulation end's. Thats why var is initialized again, when i start a simulation. Is this normal ? (I don't have any function in Model Property)

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采纳的回答

Sebastian Castro
Sebastian Castro 2016-5-25
Yes. This is normal.
The persistent variable will persist between time steps of the simulation, i.e., between calls to the MATLAB Function. At the end of simulation, the variable will go out of scope.
What exactly are you trying to do between simulations with such a variable? Maybe there's another way.
- Sebastian
  2 个评论
Walter Roberson
Walter Roberson 2016-5-26
I would gather from this that a "clear" is being one at some point ?
Though if it is one of the Accelerator modes then you are probably running a complete executable...
octus_ma
octus_ma 2016-5-26
No i tested it with a model only with this code in a Matlab Embedded Function

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更多回答（1 个）

octus_ma
octus_ma 2016-5-26
Thank you

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