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Frequency Domain Decomposition (FDD)

version 1.0.0.0 (7.57 MB) by Mohammad Farshchin
This MATLAB code implements the FDD technique for output-only modal analysis

26 Downloads

Updated 02 Dec 2015

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The Frequency Domain Decomposition (FDD) is an output-only system identification technique popular in civil engineering, in particular in structural health monitoring. As an output-only algorithm, it is useful when the input data is unknown. FDD is a modal analysis technique which generates a system realization using the frequency response given (multi-)output data [Reference: Wikipedia].
For more information about this code check the Help.docx and HelpVideo.mp4.

Cite As

Mohammad Farshchin (2021). Frequency Domain Decomposition (FDD) (https://www.mathworks.com/matlabcentral/fileexchange/50988-frequency-domain-decomposition-fdd), MATLAB Central File Exchange. Retrieved .

Comments and Ratings (44)

Ali Eyni

deng deng

Is it ok to use a set of acceleration responses

Fatemeh Sharafi

Hi Mr. Farshchin and thanks a lot for sharing the code. I have a question about the acceleration data. how many sensors are needed? I mean, How many nodes should we get acc response from?

Mohammad Farshchin

A copy of this code is available on Github @: https://github.com/mfarshchin/Frequency-Domain-Decomposition-FDD

Debasish Jana

bouaassoul hicham

Haseeb Ahmed

Thanks a lot Sir.

Mohammad Farshchin

Hi Haseeb,
As you know, resulting mode shapes from experimental modal identification are naturally in the form of complex mode shapes (moving waves). However there are techniques to convert the complex mode shapes to real mode shapes. You could fine some useful information here: “Operational modal analysis of civil engineering structures pages 182 and 183”.

Haseeb Ahmed

Sir how to extract (Plot) mode shapes from the end results? As that data have a real and imaginary parts. Can you please elaborate?

Fahime Sokhangou

Pham Quang Quang

Thank author so much!

Wenlong Li

thanks a lot

DERIFE Mina

AHMET ANIL DINDAR

mati ullah

Sir what was step size of time of the measured accelerometer data

Alex

Great!

mati ullah

panda An

Mohammad Farshchin

There is a help video in the rar file which explains how to use the code.

t y

Elangovan kumar

I couldn't find the Help document or video . Can you post a help video or help document?

cyl

javad karimi

hongjun xu

Et

citysky

Hooman

Nima Nazemi

Eric Marshal

Shima

Jo La

ZHI QIU

THANK YOU VERY MUCH!

Omid Khademhosseini

Sven

Gabriele Granello

Daniel

shahram heidari

Naeem Khoshnevis

ABDULLAH ALMAYEEF

Mehdi Rostamian

Farhad Sedaghati

Mohammad Farshchin

FDD MATLAB

MATLAB Release Compatibility
Created with R2014a
Compatible with any release
Platform Compatibility
Windows macOS Linux

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