The error message you are encountering in Simulink indicates that the Transfer Function block is not designed to handle variable-size signals directly. Here are some steps you can take to address this issue:
- Fixed-Size Signal: If possible, convert your variable-size signal to a fixed-size signal before it reaches the Transfer Function block. This can be done by ensuring that the dimensions of the signal are constant throughout the simulation.
- Use a Selector Block: If your signal can be broken down into smaller, fixed-size portions, use a Selector block to extract a fixed-size portion of the signal to pass through the Transfer Function block.
- Buffer Block: Consider using a Buffer block to convert the variable-size signal into a fixed-size signal. The Buffer block can be configured to output a signal with a fixed number of samples, which can then be processed by the Transfer Function block.
- Custom Function: If the above solutions do not fit your needs, you might consider implementing a custom function using a MATLAB Function block. This approach gives you more control over the input and output sizes and allows you to handle variable-size signals more flexibly.
- Check the Model Configuration: Ensure that your model is configured to support variable-size signals if you are using them elsewhere. This can be done in the Model Configuration Parameters under the "Solver" and "Data Import/Export" sections.
I hope this helps!
