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Entry  Thu Aug 11 16:09:05 2011, Nicole, Summary, SUS, Bode Plot for TT Suspension 6x
    Reply  Fri Aug 12 14:15:07 2011, Nicole, Summary, SUS, Bode Plot for TT Suspension EXPrigidvsflex.jpg
       Reply  Fri Aug 12 15:34:16 2011, Nicole, Summary, SUS, Bode Plot for TT Suspension RIGIDexp_model.jpgflexmodcomp.jpg
Message ID: 5206     Entry time: Fri Aug 12 14:15:07 2011     In reply to: 5195     Reply to this: 5208
Author: Nicole 
Type: Summary 
Category: SUS 
Subject: Bode Plot for TT Suspension 

Here is my bode plot comparing the flexibly-supported and rigidly-supported EDCs (both with no bar)

It seems as if the rigidly-supported EDC has better isolation below 10 Hz (the mathematically-determined Matlab model predicted this...that for the same magnet strength, the rigid system would have a lower Q than the flexible system). Above 10 Hz (the resonance for the flexibly-supported EDCs seem to be at 9.8 Hz) , we can see that the flexibly-supported EDC has slightly better isolation? I may need to take additional measurements of the transfer function of the flexibly-supported EDC (20 Hz to 100 Hz?)  to hopefully get a less-noisy transfer function at higher frequencies. The isolation does not appear to be that much better in the noisy region (above 20Hz). This may be because of the noise (possibly from the electromagnetic field from the shaker interfering with the magnets in the TT?). There is a 3rd resonance peak at about 22 Hz. I'm not sure what causes this peak...I want to confirm it with an FFT measurement of the flexibly-supported EDC (20 Hz to 40 Hz?)

 

 

EXPrigidvsflex.jpg

 

 

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