check if a condition is true for a certain time (Simulink)

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Marco Bellusci 2020-3-10

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https://ww2.mathworks.cn/matlabcentral/answers/510113-check-if-a-condition-is-true-for-a-certain-time-simulink

评论： Alberto Boñal Bravo 2021-11-23

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I have a simple problem but i can't find a solution.

I have the following model:

and I would like to get 1 as output of this model when the condition is respect for 0.8 consecutive seconds.

How can i do it?

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Alberto Boñal Bravo 2021-11-23

Hi Marco, can you show how you solved your model?

Thank you!

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回答（1 个）

Fangjun Jiang 2020-3-10

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Connect this condition to an integrator. If the condition is true, the integration will increase. Compare it to 0.8, you will get the result. Specify the integrator to be reset by external source. Use the fall edge or low level of your condition to reset it.