Hi @g g
As per my understanding, you would like to avoid the recompilation overhead and looking for a way to dynamically update the plant matrices.
To avoid triggering model recompilation when updating A, B, C, D matrices between simulations, consider encapsulating your plant using a MATLAB Function block that references matrices from a Simulink data dictionary or a persistent variable, rather than using Constant blocks tied to workspace variables.
Instead of feeding the matrices via Constant blocks, define the matrices as 'Simulink.Parameter' objects and set their '.Tunable' property to 'true'. This can prevent recompilation.
A = Simulink.Parameter;
A.Value = [...]; % your matrix
A.CoderInfo.StorageClass = 'ExportedGlobal';
A.Tunable = true;
Use these parameters inside a MATLAB Function block to build your model.
For more information regarding 'MATLAB Function block', kindly refer the following documentation - https://www.mathworks.com/help/simulink/ug/what-is-a-matlab-function-block.html
I hope this helps.
