How to calculate the Relative Gain Array from input/output data?

I need to calculate the RGA for a MIMO system. What I have is a series of experiments in which only one input is not zero (white noise) and all the signals at the sensors are recorded.

To calculate RGA, as far as I have understood I need the steady state gain matrix but how can I calculate that directly from the available data I have?

Thanks a lot

[Alejandro Hernandez]

Check out here:

https://eng.libretexts.org/Bookshelves/Industrial_and_Systems_Engineering/Book%3A_Chemical_Process_Dynamics_and_Controls_(Woolf)/12%3A_Multiple_Input_Multiple_Output_(MIMO)_Control/12.02%3A_MIMO_control_using_RGA

There is a practical example there on how to compute the Steady-state gain matrix experimentally and then compute the RGA.

Answer 1

[MOHD FAHEEM ULLAH]

Steady state gain of each output is the final value of output at steady state of MIMO process and use