Error in port widths or dimensions Error.

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Onat Aytac 2021-5-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/843050-error-in-port-widths-or-dimensions-error

评论： wei bin 2022-4-21

采纳的回答： Fangjun Jiang

Ekran Resmi 2021-05-29 11.59.58.png

My input is a time history which is a 1x3001 double. How can I solve that error? Thanks.

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Mathieu NOE 2021-5-31

hello

you're using the wrong block for the input; here it's like you want to have all the 3001 values of the input vector feeding at every time stamp the system; this is not waht you want; you want to take one value per time stamp

look at the simulink demo files

Onat Aytac 2021-6-1

Hello @Mathieu NOE,

I couldn't figure out which block to use as input. I have tried to add timestep block between the input and the summation block but it did not work.

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Answer 1

Fangjun Jiang 2021-6-1

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/843050-error-in-port-widths-or-dimensions-error#answer_714405

If your t=sin(0:0.01:30), which is 1x3001 double, you need to make it a column vector and then use the "From Workspace" block.

You also need to specify the time steps for this data, for example, TimeStep=0:0.01:30.

Then specify the value of the "From Workspace" block as [TimeStep', t']

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Onat Aytac 2021-6-4

Thanks!

wei bin 2022-4-21

Hello, may I know you? I'm a student of Shenyang Architecture and Architecture University. My name is Wei bin. Today, I saw the answer to your question and solved the problem I've been wondering for several days. Can I know the you, my email weibin@stu.sjzu.edu.cn ； My wechat 18895374281;

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