Finding the frequency response of data collected from a DAQ

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Jason Fender
Jason Fender 2011-2-22
I have a cantilever beam with motor attached to the end of the beam. The motor works a rotating mass. The speed of the motor was adjusted until the natural frequency of the beam was found. At that point, data was taken with a DAQ so I have data with corresponding times. My end goal with the data is to make a frequency response but I have no idea where to begin. I've been messing around with the freqs command in Matlab, but I haven't had any luck. Any help would be greatly appreciated.
If there is a way to upload my .txt file of data and if it were helpful to anyone, I'd be happy to.

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回答（1 个）

Rob Purser
Rob Purser 2011-2-22
Check out this in the file exchange. It might help to get you started.
All the best,
-Rob

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