Signal Processing

Why do we convert Frequency Domain to Laplace Domain?

Questions by sivaec61

Showing Answers 1 - 3 of 3 Answers

RZara

  • Nov 24th, 2009
 

Frequency domain ----> deals with jw
Laplace domain ----> deals with s, but s = (sigma) + ( jw )

so with sigma = 0, laplace domain and frequency domain are the same.
We convert time domain to either laplace domain or frequency domain to
study various signal processing system properties.

For example: A RLC circuit can be tested for stability using laplace domain techniques.
                     We find the closed loop differential equation and transform it into laplace
                     domain. By relating the input and output, we find the closed loop transfer
                     function. By locating the position of poles from the obtained s-domain
                     function, we can assess stability of the circuit.

Give your answer:

If you think the above answer is not correct, Please select a reason and add your answer below.

 

Related Answered Questions

 

Related Open Questions