Analog low pass filter zero-phase

3 vues (au cours des 30 derniers jours)
Marco Maccotta
Marco Maccotta le 12 Avr 2017
Hi, I'm trying to design in Matlab an analog low pass filter, to implement in Simulink for online filtering. The filter should have a passband frequency of 50rad/s and stopband frequency of 100rad/s. My problem is that I need zero-phase (therefore small delay in time) almost until 100rad/s then the filter should behave with a decreasing phase (in Bode diagram); I tried to use 'butter' function but I do not find how to implement the specification about zero-phase. Do you know some function or toolbox to do it? Thanks.

Réponse acceptée

Fei Deng
Fei Deng le 17 Avr 2017
Hi Macro, you can access zero-phase zero-phase analysis method via Filter Designer App. https://www.mathworks.com/help/signal/ug/getting-started-with-filter-designer.html 1. Type filterDesigner in Command window. 2. Right-click the y-axis of the plot and select Zero-phase from the context menu.

Plus de réponses (0)

Catégories

En savoir plus sur Filter Design and Analysis 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