Assigning Flags to signals in stateflow

Question

Ryan0101 2012-3-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/33738-assigning-flags-to-signals-in-stateflow

Hello,

I have three signals (from a signal builder) that I'm passing into a stateflow model. Inside the sf model I compare the signals and if one is different then I want it to have a flag attached to it. That way the next steps won't use the failed signal.

I thought attaching a 'P' or 'F' to the beginning of the signal would work, but the sf model takes those signals at an exact time instance and cannot see the past values (at least I think so).

Any help would be appreciated. I can also explain further if need be. Thanks!

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Answer 1

Kaustubha Govind 2012-3-29

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https://ww2.mathworks.cn/matlabcentral/answers/33738-assigning-flags-to-signals-in-stateflow#answer_42575

Perhaps you could convert each of your signals to a structure with two fields - one that contains the value at that time-step and another that holds a boolean flag that denotes its validity. See Working with Structures and Bus Signals in Stateflow Charts for more information on how you can use structure signals inside Stateflow charts.