Micro controller sample voltage in the middle of the on period and then I
adjusted parameters to value in the middle of the period process got quite, see
attached picture. Voltage is also regulated to this voltage rather well.
There are no sparks so I guess fluid have some resistance. Maybe food oil is
not a suitable EDM fluid at all or there are to much durt into it.
On Tue, 21 Jun 2016 08:39:28 +0700
TJoseph Powderly <[email protected]> wrote:
> Nicklas hello'
> could you do another screenshot, but add the oscillator ( on & off
> command signal )?
> it would be easier to interpret
> thanks tomp tjtr33
>
> On 06/20/16 00:07, Nicklas Karlsson wrote:
> >> On 06/19/16 17:55, Nicklas Karlsson wrote:
> >>> I tried to tune parameters manually but most of the time is spent either
> >>> in short circuit or open circuit,
> >> this is called 'hammering'
> >> it actually works but for a poor reason.
> >> if the tools is too far away, you are open
> >> if the tool is too close, it is shorting
> >> For a brief time in transit between these 2 states you DO achieve the
> >> proper position
> >> and you get _some_ sparks.
> >>
> >> the idea is to find the ideal position where sparks occur easily
> >> yiu can find this if you can control the 'edm servo'.
> > Then I now how it should look. I didn't expect something good with my Lego
> > prototype without proper tuning and to low ignition voltage at the first
> > run.
> >
> >> ...
> > You provided exactly the information I needed, thanks!
> >
> >
> > Regards Nicklas Karlsson
> >
> >
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