Can I input an array of derivatives to the integrator and obtain an array as output?

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RANGASWAMY 2022-7-14

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https://ww2.mathworks.cn/matlabcentral/answers/1760075-can-i-input-an-array-of-derivatives-to-the-integrator-and-obtain-an-array-as-output

回答： Vinay 2024-9-17

I am new to Simulink/Matlab. I have a 2-element array of time-derivatives as input to a Simulink integrator block and I want to get a corresponding array as output. Is this even admissible? If so, how do I specify the dimensions of the inputs and outputs to the integrator block?

I get the following error when I try to build the model.

Error in port widths or dimensions. Invalid dimension has been specified for 'Input Port 1' of '<foo>/Integrator'. I have seen some people ask similar questions

Thanks.

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Answer 1

Vinay 2024-9-17

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https://ww2.mathworks.cn/matlabcentral/answers/1760075-can-i-input-an-array-of-derivatives-to-the-integrator-and-obtain-an-array-as-output#answer_1517760

example.slx

Hi Rangaswamy,

The Simulink ‘Integrator’ block accepts vector signal as an input and integrates each element individually. The error arises due to mismatch in the input size and output size defined using the ‘mux’ and ‘demux’ block.

I have attached a Simulink model demonstrating the vectorized input integration below:

Kindly refer to the below documentations ofn “integrator”, “mux” and “demux” for more details: “Integrator”: https://www.mathworks.com/help/releases/R2021b/simulink/slref/integrator.html

“mux”: https://www.mathworks.com/help/releases/R2021b/simulink/slref/mux.html

“demux”: https://www.mathworks.com/help/releases/R2021b/simulink/slref/demux.html