How to invert a Transfer function in Simulink?

60 vues (au cours des 30 derniers jours)
Grande Latte
Grande Latte le 3 Fév 2021
Commenté : Grande Latte le 20 Fév 2021
Hi everyone!
I am trying to invert my transfer function: 1/(7.5*s+1) in simulink to 1/G(s) = 7.5*s+1. The goal here is to use the output of the system, pass it through the inverse of the transfer function and get the original input of the system.
However, I have some difficulties establishing the transfer runction in Simulink. Any help is greatly appreciated. Thank you!

Réponse acceptée

Les Beckham
Les Beckham le 4 Fév 2021
Transfer functions are not allowed to have a higher order in the numerator than in the denominator (more zeros than poles). This is because that makes them 'non-causal' which means that they depend on the future value of the input (which doesn't make sense).
Why would you want to "get the original input ot the system" when you already know what it is?
  1 commentaire
Grande Latte
Grande Latte le 20 Fév 2021
Thanks! yeah that makes sense, we originally wanted to reverse the output as the input to re-calibrate the system, but it seems like inverting the transfer function isn't doable. Thanks again!

Connectez-vous pour commenter.

Plus de réponses (0)

Catégories

En savoir plus sur Electrical Block Libraries dans Help Center et File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by