Ok, works fine with M62/M63, a lot of thanks to everyone :)
- "John Kasunich" a écrit :
> On Wed, 28 Apr 2010 19:40 +0100, "Andy Pugh"
>
> wrote:
> > On 28 April 2010 19:13, yann wrote:
> >
> > > The result is at the end of movement, M5 take some "long" delay to
> execute
> > > (maybe h
My outdated brush DC motor controller wisdom is that
you have a current loop controlled by a speed loop.
The current loop is set up to cancel out the effect of the R(esistive)
L(inductive) effects of the rotor inductance.
and the speedloop is a staightforward PI loop.
This makes for a very stable a
Yann Jautard wrote:
> Ok, works fine with M62/M63, a lot of thanks to everyone :)
>
>
>
here is the video of the first working try of the machine, using M62/M63
still some "plot" at the end, but this time it's a hardware problem, my
valve conception is not good.
http://www.dailymotion.com/v
Hi Yann,
Perhaps you could stop the motion just before you reach the
0,0 position, then you wouldn't get an overlap of adhesive.
Ian
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I understand your point.
but this is not the problem I have. I have a problem at the end because
with the conception of my glue valve, I have a quick increase of the
flow when closing it.
In fact, the part of the valve thay closes it is acting like a piston
that pushes out the glue.
Beside thi
On 29 April 2010 15:19, yann jautard wrote:
> In fact, the part of the valve thay closes it is acting like a piston
> that pushes out the glue.
A rotary valve (either a plug valve or a ball valve) should counteract
this problem.
http://en.wikipedia.org/wiki/Ball_valve
--
atp
-
On Thu, 2010-04-29 at 12:49 +0200, yann jautard wrote:
... snip
> here is the video of the first working try of the machine, using M62/M63
... snip
Good job Yann. Thanks for posting your video. It looks like you are
getting pretty close to show time.
--
Kirk Wallace
http://www.wallacecompany.com
Andy Pugh wrote:
> On 29 April 2010 15:19, yann jautard wrote:
>
>
>> In fact, the part of the valve thay closes it is acting like a piston
>> that pushes out the glue.
>>
>
> A rotary valve (either a plug valve or a ball valve) should counteract
> this problem.
> http://en.wikipedia.org/w
On 29 April 2010 16:05, yann jautard wrote:
>> A rotary valve (either a plug valve or a ball valve) should counteract
>> this problem.
>> http://en.wikipedia.org/wiki/Ball_valve
> You're rigth, but not easy to drive with a pneumatic cylinder.
I have seen rotary pneumatic actuators.
> I'm think
Jan de Kruyf wrote:
> So I would say that ultimately also a 3phase drive will have a current loop
> to negate the RL factor of the winding.
But, this requires at least two current sensors, and they have to
account for the commutation and sinusoidal drive to provide unvarying
torque. So, it gets
I got a new wireless Internet connection and my ISP installed a Ubiquity
RouterStation Pro. Of course, after they left, I took it apart to see
inside.
http://www.ubnt.com/rspro
It runs OpenWRT which is way cool for setting up office to shop links,
but it also has up to eight(9?) GPIO pins and doc
I am sure you are desperate to go and spend your hard earned money (;->
J.
On Thu, Apr 29, 2010 at 6:09 PM, Jon Elson wrote:
> Jan de Kruyf wrote:
> > So I would say that ultimately also a 3phase drive will have a current
> loop
> > to negate the RL factor of the winding.
> But, this requires at
and here is the link, sorry
http://www.toshiba-components.com/microcontroller/BMSKTOPASM370.html
j.
On Thu, Apr 29, 2010 at 7:01 PM, Jan de Kruyf wrote:
> I am sure you are desperate to go and spend your hard earned money (;->
> J.
>
>
> On Thu, Apr 29, 2010 at 6:09 PM, Jon Elson wrote:
>
>> J
in the summer of 2006, having bought those cheap Sanyo motors that
surpluscenter was selling then, I thought I had time to complete
something like this. And I did get as far as actually rotating the
motor with control by emc2/mesa5i20 card
http://www.anderswallin.net/2006/06/first-steps-with-brushl
I have wired up one of the PPMC DAC channels to control the VFD, and
added an abs HAL component to get the unipolar spindle speed command.
My first cut at rigid tapping just jammed the VFD from forward to
reverse command, which was so abrupt it caused Z-axis following errors
at higher spindle
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