FFT / Frequency Identification Real-Time compile capability

Hello Everyone.

I have been using MATLAB for quite some time now but have just started getting into the realtime environment. I essentiall am creating a simulink model that is compiled and used to control our equipment in real time. Know I have designed a conroller but I need to be able have the controller update on the fly but in order to do so I need to be able to pass to it the main frequencys of vibration from the error signal; . My question is wheter FFT block can be used in real time and if not what can i use instead?

Shane

[Kaustubha Govind]

How are you achieving the interface between your controller model and the hardware? Also, do you use Simulink directly, or are you using either Real-Time Windows Target or xPC Target?

[Ivan van der Kroon]

An fft always needs an interval to be performed on. You can store (part of) the time signal and do an fft of this signal continuously as the data changes/increases.

You can also get a bandpass filter in the range of the expected frequencies and measure the ac-signal.

Answer 1

[Doug Hull]

answered in comments

[Azzi Abdelmalek]

Doug, there is no answers in comment