On 1 February 2015 at 23:39, dave wrote:
> The
> technology for converting
> resolvers to digital has gotten much cheaper
True, I ended up writing the Mesa resolver and 3-phase PWM drivers and
the bldc component to get my mill working.
I guess it was a bit harder until I did all that :-)
--
atp
On 02/01/2015 09:49 AM, andy pugh wrote:
> On 1 February 2015 at 17:05, Kirk Wallace wrote:
>> I know very little about resolvers, but I think it means that resolvers
>> are analog so one needs to determine what the 100% and 0% signal values
>> are, and values in between (to deal with linearity)
On Sunday 01 February 2015 13:41:03 Karlsson & Wang did opine
And Gene did reply:
> It might simply be because resolvers are analog which considered to be
> old technology. It is useful to have some extra resolution above the
> accuracy for the control loop and I think resolvers usually have
> high
It might simply be because resolvers are analog which considered to be old
technology. It is useful to have some extra resolution above the accuracy for
the control loop and I think resolvers usually have higher resolution.
I read many times digital control loops are faster but quite a lot of di
On 1 February 2015 at 17:05, Kirk Wallace wrote:
> I know very little about resolvers, but I think it means that resolvers
> are analog so one needs to determine what the 100% and 0% signal values
> are, and values in between (to deal with linearity) to convert to data.
The reader takes the ratio
On 02/01/2015 11:05 AM, Kirk Wallace wrote:
> On 02/01/2015 08:36 AM, andy pugh wrote:
>> On 1 February 2015 at 16:25, Kirk Wallace
>> wrote:
>>> However, they are
>>> inflexible in their application, and must be specifically "tuned" to
>>> meet the drive system requirements
>> I wonder what that
On 02/01/2015 10:36 AM, andy pugh wrote:
> On 1 February 2015 at 16:25, Kirk Wallace wrote:
>> However, they are
>> inflexible in their application, and must be specifically "tuned" to
>> meet the drive system requirements
> I wonder what that means, and if it is even true?
>
I've found that most
http://www.leinelinde.com/Products/
I took a fast look:
Encoder http://www.leinelinde.com/Documents/Brochure/700_Series_eng.pdf with
up to 10 000 ppr equal to a little bit less than 14 bits resolution which I
assume be more or less equal to accuracy.
Resolver http://www.leinelinde.com/Docume
On 02/01/2015 08:36 AM, andy pugh wrote:
> On 1 February 2015 at 16:25, Kirk Wallace wrote:
>> However, they are
>> inflexible in their application, and must be specifically "tuned" to
>> meet the drive system requirements
>
> I wonder what that means, and if it is even true?
>
I know very little
On 1 February 2015 at 16:25, Kirk Wallace wrote:
> However, they are
> inflexible in their application, and must be specifically "tuned" to
> meet the drive system requirements
I wonder what that means, and if it is even true?
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/
... snip
>>> I think that the servos + resolvers will work a fair bit better than
>>> steppers. I was rather upset when I found that my ebay bargain servos
>>> had resolvers, but now I am something of a fan of the devices.
>> I have to agree, if they are used correctly with good electronics to
>>
Using the STM32 is not a problem but connecting to an inverter is.
Nicklas Karlsson
Micropower
On Fri, 30 Jan 2015 13:40:21 +
"Marius Liebenberg" wrote:
>
>
> -- Original Message --
> From: "andy pugh"
> To: "Marius Liebenberg"
> Cc: "Enhanced Machine Controller (EMC)"
>
> S
On 1/30/2015 7:48 AM, andy pugh wrote:
> On 30 January 2015 at 14:41, Marius Liebenberg wrote:
>
>> It's actually "Pluk n lat vir jou eie gat"
>
> It's like Dutch isn't it? English but spelt really badly :-)
>
> "Pluck a lath for your own back"
I like the Polish "Not My Circus, Not My Monkey".
-- Original Message --
From: "andy pugh"
To: "Marius Liebenberg" ; "Enhanced Machine
Controller (EMC)"
Sent: 2015-01-30 16:48:42
Subject: Re: [Emc-users] BLDC Hal component
>On 30 January 2015 at 14:41, Marius Liebenberg
>wrote:
>
>&g
I was about to have some made for myself but I will wait for your to be
done.
-- Original Message --
From: "Rene Hopf"
To: "Enhanced Machine Controller (EMC)"
Sent: 2015-01-30 18:10:40
Subject: Re: [Emc-users] BLDC Hal component
>Hi,
>
>200V @ 10A wit
On 01/30/2015 07:47 AM, Marius Liebenberg wrote:
> I have a feeling that these have resolver and hall sensors as there is
> huge number of wires on the plug. More that what a resolver will need.
>
>
Ahh, then our resolver converter would also work will with
them. The resolver
converter's A-B-Z sig
On 01/30/2015 06:54 AM, andy pugh wrote:
> On 30 January 2015 at 12:33, Marius Liebenberg wrote:
>> 196V @ 8.5A and looks like a resolver feedback. These are the Lafert. The
>> others I have not seen yet.
> That sounds a lot like what I have on my mill.
>
> Pico-systems have a 160V / 20A servo dr
On 30 January 2015 at 16:10, Rene Hopf wrote:
> 200V @ 10A with resolvers looks like a good candidate for my brushless Driver.
I just remembered that Granite Drives have a (very cheap) adaptor to
allow use of Resolvers with the Argon drives too.
You would almost certainly end up using step/dir co
Hi,
200V @ 10A with resolvers looks like a good candidate for my brushless Driver.
We are making very good progress at the moment.
https://github.com/rene-dev/stmbl
If anyone is interested in PCBs, let me know, I will order some in a few weeks.
Rene
On 30 Jan 2015, at 15:48, andy pugh wrote:
>
On 30 January 2015 at 14:41, Marius Liebenberg wrote:
> It's actually "Pluk n lat vir jou eie gat"
It's like Dutch isn't it? English but spelt really badly :-)
"Pluck a lath for your own back"
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
-
-- Original Message --
From: "Belli Button"
To: "'Marius Liebenberg'" ; "'Enhanced Machine
Controller (EMC)'"
Sent: 2015-01-30 16:02:49
Subject: RE: [Emc-users] BLDC Hal component
>Maak 'n lat vir jou eie gat?
>
It's
-- Original Message --
From: "andy pugh"
To: "Marius Liebenberg"
Cc: "Enhanced Machine Controller (EMC)"
Sent: 2015-01-30 15:57:43
Subject: Re: Re[6]: [Emc-users] BLDC Hal component
>On 30 January 2015 at 13:47, Marius Liebenberg
>wrote:
>> I have a feeling that these have resolve
Maak 'n lat vir jou eie gat?
-Original Message-
From: Marius Liebenberg [mailto:mar...@mastercut.co.za]
Sent: 30 January 2015 15:17
To: andy pugh
Cc: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] BLDC Hal component
We have a saying in my language that roughly trans
On 30 January 2015 at 13:47, Marius Liebenberg wrote:
> I have a feeling that these have resolver and hall sensors as there is huge
> number of wires on the plug. More that what a resolver will need.
That's interesting and opens up the possibility of using a number of
alternative drives.
However
I have a feeling that these have resolver and hall sensors as there is
huge number of wires on the plug. More that what a resolver will need.
-- Original Message --
From: "andy pugh"
To: "Marius Liebenberg"
Cc: "Enhanced Machine Controller (EMC)"
Sent: 2015-01-30 15:34:16
Subject: Re:
-- Original Message --
From: "andy pugh"
To: "Marius Liebenberg"
Cc: "Enhanced Machine Controller (EMC)"
Sent: 2015-01-30 15:34:16
Subject: Re: Re[4]: [Emc-users] BLDC Hal component
>On 30 January 2015 at 13:16, Marius Liebenberg
>wrote:
>
>> He said I should covert to steppers fo
On 30 January 2015 at 13:16, Marius Liebenberg wrote:
> He said I should covert to steppers for the sake of cost and I said No lets
> try and make the servos work.
I think that the servos + resolvers will work a fair bit better than
steppers. I was rather upset when I found that my ebay bargain
We have a saying in my language that roughly translated says : "I have
just picked a lashing stick for my own ass" :)
He said I should covert to steppers for the sake of cost and I said No
lets try and make the servos work.
I will have to look at Jon's stuff as well before I decide. Thanks for
On 30 January 2015 at 12:33, Marius Liebenberg wrote:
>
> 196V @ 8.5A and looks like a resolver feedback. These are the Lafert. The
> others I have not seen yet.
That sounds a lot like what I have on my mill.
Pico-systems have a 160V / 20A servo drive that can probably be made
to work along wit
-- Original Message --
From: "andy pugh"
To: "Marius Liebenberg" ; "Enhanced Machine
Controller (EMC)"
Sent: 2015-01-30 14:09:39
Subject: Re: [Emc-users] BLDC Hal component
>> I have Lafert motors and another make of what I am told are BLDC
&
> I have Lafert motors and another make of what I am told are BLDC motors.
> No drives at the moment hence my search for relevant information.
What current, voltage and feedback type are they?
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
-- Original Message --
From: "andy pugh"
To: "Marius Liebenberg" ; "Enhanced Machine
Controller (EMC)"
Sent: 2015-01-30 13:10:14
Subject: Re: [Emc-users] BLDC Hal component
>On 30 January 2015 at 10:40, Marius Liebenberg
>wrote:
>>I
On 30 January 2015 at 10:40, Marius Liebenberg wrote:
> If the parport is not the best option, what would you suggest? One
> obviously is Mesa but are there others that you know of?
I initially wrote the component to support the 7i39, and then extended
it for the 8i20, so its main use is for Me
If the parport is not the best option, what would you suggest? One
obviously is Mesa but are there others that you know of?
-- Original Message --
From: "andy pugh"
To: "Marius Liebenberg" ; "Enhanced Machine
Controller (EMC)"
Sent: 2015-01-30 12:14:43
On 30 January 2015 at 09:31, Marius Liebenberg wrote:
> Will the parport be fast enough for this driver or does one need special
> hardware? If so, what is recommended?
It is possible to use the parport. Someone has managed to spin some
Fanuc motors with the Parport and AMC drives.
http://youtu.b
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