How to allow only sequences that have had the same value for 5 seconds (in Simulink)?

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black_cat 2021-9-21

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编辑： black_cat 2021-9-22

I have an input like this:

[2, 2, 2, 2, 3, 2, 2, 2, 3, 4, 4, 4, 4]

I want to suppress oscillation and only allow sequences that have had the same value for x seconds (e.g. 5). So that it outputs the above sequence like this:

[2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3]

Is there a way to do this using blocks in Simulink?

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Jonas 2021-9-21

I still don't know why it would output [2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3]. There has not been five consecutive '3' in the input data. If you want the data to only jump when the value is 5 times the same consecutively, the output will be:

Input: [2, 2, 2, 2, 3, 2, 2, 2, 3, 4, 4, 4, 4]
Output: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2]

black_cat 2021-9-21

Yeah, because you assume that the consecutive number is coming from the input, but it is about the output.

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回答（1 个）

Jonas 2021-9-21

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https://ww2.mathworks.cn/matlabcentral/answers/1457519-how-to-allow-only-sequences-that-have-had-the-same-value-for-5-seconds-in-simulink#answer_792024

Using only blocks, I think this should do the trick:

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black_cat 2021-9-22

编辑：black_cat 2021-9-22

Thank you very much. This is the solution that solved my problem:

However, this only helps me with the values that occurred in the last 5 seconds. Does anyone know how can I apply this to the last 50 seconds without adding 40 more delay blocks?

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