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Error in port widths or dimensions

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Mounira
Mounira 2023-12-28
回答： Paul 2023-12-30
Hello,
so i have a state space representation in simulink matlab, and i have this error:
Error in port widths or dimensions. Invalid dimension has been specified for 'Input Port 3' of 'dcmicrogrid14/plant model/Sum'.
Component:Model Predictive Controller | Category:Find Operating Point error
Error in port widths or dimensions. 'Output Port 1' of 'dcmicrogrid14/plant model/Gain' is a [2x2] matrix.
Component:Model Predictive Controller | Category:Find Operating Point error
3 inputs, 2 outputs=2 states,
and the gain are element.wise
in this case why A shouldn't be 2 by 2?
what is the error?
thanks in advance
  2 个评论
Sulaymon Eshkabilov
Sulaymon Eshkabilov 2023-12-28
It is a bit difficult to see your model (subsystem), it will be helpful to see the whole model.
Mounira
Mounira 2023-12-29
so i added a photo and the model in case you want to check

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采纳的回答

Paul
Paul 2023-12-30
The system has 3 inputs, 2 outputs, and 2 states. The gain multiplications by A, B, C, and D need to be matrix*vector multiplications.
If that doesn't work, go to Debug->Information Overlays -> Signal Dimensions and post a screen capture after the diagram updates.

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