New answers tagged vibration
What you need is to match mechanical impedance between what the motor produces, and the tuned mass damper. Read more here http://www.bksv.com/doc/17-179.pdf and here http://arkansas.s.jniosh.go.jp/en/indu_hel/pdf/43-3-3.pdf
The resonant frequency of the string only depends on its properties (tension, length, mass) But in a real instrument the complex set of frequencies that produce the note depend on how it is plucked, the stop-start motion of a violin bow, the contact with the string, friction etc.
In principle, there is now reason that this can't be done. There are, however, a lot of practical difficulties. You would need a high speed camera recording at something like 50,000 fps to catch all of the audio band which humans can hear. These things aren't cheap and generally can't record for longer than a few tens of seconds at such high speeds. ...
Regardless of whether the "local" situation is symmetric or not with respect to loosening and tightening, what you essentially have is a random walk. At any point in time, the screw can stay where it is, get a little looser or get a little tighter. There is, in practical terms, a limit as to how tight the screw can get but no limit on how loose. For any ...
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