system identification procedure
Hello, anyone knows? How to make implementation or realization system identification procedure in matlab .Using simulink model(electric device model such as transfer function and integrator).From this model I can get experimental data(input and output).
Kshitij Singh answered .
2025-11-20
Have Simulink data available in MATLAB workspace as double vectors. In the GUI (ident) import time signals to load the data. Then you work from there. If you are estimating models in the command line, package the data into an iddata object:
data = iddata(y,u,Ts); % y = output; u = input; Ts = sample time
Then try various estimation commands, e.g:
model = tfest(data, 2); % second order transfer function
The logged data (y,u) must be equi-sampled. If not, interpolate them to a uniform time grid.