I haven't tried it yet, but this looks promising.
LinuxCNC S-Curve Accelerations
Scott H
On Tuesday, August 17, 2021, 12:57:06 PM CDT, Ralph Stirling
<ralph.stirl...@wallawalla.edu> wrote:
I've also been hoping to see this appear in a Linuxcnc update,
as it has been worked on by a number of people for years.
Here are the most recent threads about jerk-limited trajectory planning:
https://forum.linuxcnc.org/24-hal-components/40152-jerk-limited-trajectory-planner-hal-component
https://forum.linuxcnc.org/38-general-linuxcnc-questions/34666-c2-smooth-velocity-profile?start=0
-- Ralph
________________________________________
From: David Berndt [ber...@uberwin.com]
Sent: Tuesday, August 17, 2021 9:01 AM
To: Enhanced Machine Controller (EMC); andrew beck
Subject: Re: [Emc-users] jerk control
CAUTION: This email originated from outside the Walla Walla University email
system.
I don't have a great need for it with my machines, or the time/brains to
implement it. It just seems like a feature we really should have.
I'd be willing to participate monetarily in some sort of system to
incentivize the inclusion of jerk control. Perhaps an open-source feature
bounty? Does the community want to consider that sort of thing?
-Dave
On Mon, 16 Aug 2021 23:06:05 -0400, andrew beck <andrewbeck0...@gmail.com>
wrote:
> hey guys
>
> I am sitting here watching my cnc mill atm its shaking quite a bit
> acceleration is 600mm/sec2 which is not that high i think. compared to
> every other cnc mill i have used with a commercial controller. they have
> jerk control and work much better. so looking forward to when we get
> jerk
> control here on linuxcnc!
>
> but in the mean time i need a poor mans jerk control and thinking of a
> limit on the pid output to chop down the initial acceleration for the
> first
> moment in time just so little moves don't shake it to death
>
> andy mentioned that I could maybe use a limit component to limit the
> initial acceleration for the first tiny moment in time to cut down on the
> vibrations.
>
> how do you guys think that could work?
>
> Regards
>
> Andrew
>
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