How to compare the similarity of 2 transfer functions

1. How do you interpret a transfer function?
2. Which analysis is used for transfer function?
3. What is the ratio of transfer function?

How do you interpret a transfer function?

The transfer function defines the relation between the output and the input of a dynamic system, written in complex form (s variable). For a dynamic system with an input u(t) and an output y(t), the transfer function H(s) is the ratio between the complex representation (s variable) of the output Y(s) and input U(s).

Which analysis is used for transfer function?

The term "transfer function" is also used in the frequency domain analysis of systems using transform methods such as the Laplace transform; here it means the amplitude of the output as a function of the frequency of the input signal.

What is the ratio of transfer function?

The transfer function is the ratio of the Laplace transform of the output to that of the input, both taken with zero initial conditions.