hanced Machine Controller (EMC)" >
> > Subject: Re: [Emc-users] 5I25-7i76 encoder output
> >
> > On Sun, Oct 28, 2018 at 5:15 AM andy pugh wrote:
> >
>
> The Mesa Encoder uses both methods combined = delta_counts/delta_time, so
> for
> example if you have
On Sun, 28 Oct 2018 at 17:43, Chris Albertson wrote:
> Then perhpas this is the wrong method.
An important point here, that I thought I had addressed, is that it
doesn't really matter.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of
On Sun, 28 Oct 2018, Chris Albertson wrote:
Date: Sun, 28 Oct 2018 10:41:14 -0700
From: Chris Albertson
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] 5I25-7i76 encoder output
On Sun, Oct 28, 2018
On Sun, Oct 28, 2018 at 5:15 AM andy pugh wrote:
> On Sun, 28 Oct 2018 at 07:17, Chris Albertson
> wrote:
>
> > Or switch to the other method. Rather then count "ticks" you count the
> > microseconds between the ticks.
>
> The Mesa encoder counter already does this.
>
Then perhpas this is
On Sat, 27 Oct 2018, Alan Condit wrote:
Date: Sat, 27 Oct 2018 18:46:59 -0700
From: Alan Condit
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Emc-users@lists.sourceforge.net"
Subject: [Emc-users] 5I25-7i76 encoder output
I have a homemade encoder on my lathe s
On Sun, 28 Oct 2018 at 07:17, Chris Albertson wrote:
> Or switch to the other method. Rather then count "ticks" you count the
> microseconds between the ticks.
The Mesa encoder counter already does this.
It may be that the home-made encoder does actually have some angular
noise, so the
> ,
> that I was able to run the P-Gain from 3 on up to the 20-40 area.
> Spindle speed control is so accurate that until the chirp of the current
> limit of the pwm-servo I'm driving that motor to around the 2 hp mark
> with, I have no clue that its working that hard. So I would highly
>
I've seen this too. non-constant RPM when you know the rotating mass has
enough inertia that the RPM can change so fast.
What I found is that the resolution of measuring the encoder is low and
what I see is quantization noise.This means I'm not sampling with
enough bits. You are sampling to
On Saturday 27 October 2018 21:46:59 Alan Condit wrote:
> I have a homemade encoder on my lathe spindle. I am feeding the
> encoder outputs into the encoder spindle inputs on the 7I76. The
> reported rpm seems to be fluctuating wildly. I want to look at the
> signals to see if the width of the
I have a homemade encoder on my lathe spindle. I am feeding the encoder outputs
into the encoder spindle inputs on the 7I76. The reported rpm seems to be
fluctuating wildly. I want to look at the signals to see if the width of the
signals is about the same for the index on time and for channel
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