When I first read "fast linear displacement generator", I thought "Well,
what about a gun?" ;-)



On Sat, Aug 31, 2013 at 7:11 AM, RussellMc <apptechnz@gmail.com> wrote:

> > I need a linear displacement generator with displacements of in the ord=
er
> of 0.2-1mm or so at frequencies of
> > up to ~1KHz or more if possible. I'm hoping 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
>
> More information would help
> eg mass to be moved is highly relevant.
> If it's only always a sine wave then some cheating may be possible.
> If the sine wave is stable in amplitude and frequency throughout a 'test'
> and if it is allowed to ramp up or settle to this state it may all help.
>
> I BOTE guesstimate that for a non-cheating pure voice coil driver based
> system you'd need around 2 watts delivered energy per gram of load
> (E&OE/YMMV/calculate it yourself to check). Assuming I've not dropped a
> power of 10 or few along the way, well inside existing speaker driver
> capability for loads in the few grams range.
>
>
>     Russell
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