I kept on getting error that says "Error in port widths or dimensions. 'Output Port 1' of 'simulink_​controller​/Sum2' is a [2x2] matrix."

How can I solve the mentioned error? I couldn't figure out as I am new to simulink.

Thank you.

[madhan ravi]

Could you share an excerpt of the model’s picture?

[Pramod Sapkota]

[Pramod Sapkota]

This is my simulink model. I have code written in matlab for lqr controller with non zero set point. I have 2 states x1 and x2 but my output of interest is x2 only. I get two errors :

Error in port widths or dimensions. 'Output Port 1' of 'simulink_PNZSP_controller/Sum2' is a [2x2] matrix.

Component:Simulink | Category:Model error

Error in port widths or dimensions. Invalid dimension has been specified for 'Input Port 1' of 'simulink_PNZSP_controller/integrator'.

Answer 1

[Walter Roberson]

Pass the output of the Sum2 block through a Selector block https://www.mathworks.com/help/simulink/slref/selector.html

[Pramod Sapkota]

I tried using that block still, it shows the same error since the error is shown in the output port of sum block before output reaches the selector block.