How can I start a timer when the value of a signal becomes zero?

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I want to start a counter when the value of a signal becomes zero.
After that, when the time in the timer becomes 2 sec, I need to change a flag status.
I need help in doing these in simulink.
Thanks,

Answers (1)

Guy Rouleau
Guy Rouleau on 17 Nov 2013
Use Stateflow... it allows you to express this type of procedural logic in a very intuitive way.
If you need to use Simulink only, then a combination of basic math (Sum, Switch, Delay, etc) will do it.

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