Hoping the list collective wisdom can help....

I need a linear displacement generator with displacements of in the order o=
f 0.2-1mm or so at frequencies of up to ~1KHz or more if possible. I'm hopi=
ng to input a sine wave of varying amplitude and frequency and have linear =
motion (vibration) of the unit in response to the input signal. I'd rather =
not build, but am also open to suggestions in that regard. The required com=
bination of velocity and displacement amplitude in such a mechanical system=
 may be tricky. Anyone have any ideas? Systems similar to those used in vib=
rating sample magnetometers might work, those are normally run at much lowe=
r frequencies though.

Thanks,

Joe

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