Transfer model from system identification toolbox to simulink

Hi, I`m new here and need help in system identification toolbox and simulink. I already established an idmodel in system identification with 3 inputs(speed,coolwatertemperature,oiltemperature) and one output (temperature ECU) and get a fitting of 75%. After i take the model (transfer function) in sumulink via idmodel block i get a different output from the system even though i take the same measured data (Excel; column1: time, clomn2:speed, column3:coolwatertemperature, column4: oiltemperature) Can somebody tell me why please? Thank you.

Answer 1

[Vishal Neelagiri]

You might want to refer to the following MATLAB Answers post which describes a similar issue:

https://www.mathworks.com/matlabcentral/answers/93319-why-does-the-output-of-my-system-identification-toolbox-model-idmodel-not-match-the-output-of-the-id

[Mustafa Acar]

Thank you for the answer!