For couple of weeks now, I am dealing with transfer function estimation. The system which I am currently examining is highly distorted at high frequencies due to its structural dynamics. I analysed its frequency response and it is getting really messy above 2,5 kHz.
I want to compensate this system with the use of the transfer function. I have some input and output data (attached you will find the graph illustrating input and output signals). It has been carried out by means of the impact hammer testing. To cut the long story short: input - hammer hit, output - response of the system (oscillations).
I tried to handle it with the System Identification Toolbox. What I got so far is:
Could you please provide me with any hints how to get this function into time domain? The aim of my work is to reproduce the input signal without the distortions.
Thank you very much for any feedback.