Acceleration

All things related to the Centroid Acorn CNC Controller

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FlyingHaggis
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Acceleration

Post by FlyingHaggis »

How does one set/control acceleration.

At present direction changes are brutal, so how to soften them so that it decelerates somewhat before a direction change.
Para 165, I do not follow what the impact of these options will be.

Can someone shed some light ?


Ken Rychlik
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Re: Acceleration

Post by Ken Rychlik »

If you want decent answers, your going to have to provide a decent question. It's like me saying my car runs bad, what's wrong with it? You should post the report, what settings you have, what motors, what kind of machine, some pics and or video......
Ken


FlyingHaggis
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Re: Acceleration

Post by FlyingHaggis »

Perhaps if I put the question another way...

In Mach3 it's very easy to set the acc/dec for each axis.
What/Where is the equivalent in the Acorn world ?


Sword
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Re: Acceleration

Post by Sword »

In the wizard, axis configuration, accel/decel. Then you can also do some fine tuning with the smoothing parameters (read up on smoothing config in the manual.
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Gary Campbell
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Re: Acceleration

Post by Gary Campbell »

Acceleration is speed increase over time. Usually units per sec^2 or units per minute per second. Some controllers use the units, Centroid uses time. Default is .5 or a half second.

That means you will accelerate to your set speed in a half second. If you wish to soften it up, use a larger number, if you wish to go more aggressive, use a smaller number. Sounds like you are going to use a larger number. Start with one, and work your way smaller a tenth at a time.
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midy
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Re: Acceleration

Post by midy »

Good answer. Well put Gary


Ken Rychlik
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Re: Acceleration

Post by Ken Rychlik »

I ended up using .8 to soften my starts and stops, but don't forget to look at turning on smoothing also.
Ken


Chaz
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Re: Acceleration

Post by Chaz »

Ken Rychlik wrote: Tue May 28, 2019 7:18 am I ended up using .8 to soften my starts and stops, but don't forget to look at turning on smoothing also.
Is that a parameter option or only via the CAM software? If parameter, which number please?

Thanks


FlyingHaggis
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Re: Acceleration

Post by FlyingHaggis »

I was trying to avoid the wizard as it keeps overwriting the "hom" file every-time it saves - which is a little annoying.

But your right, easy to set in the Wizard.
Now set to '1.0' and things are much better.




thanks


cnckeith
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Re: Acceleration

Post by cnckeith »

tell the wizard you are creating your own home program....choose "custom user defined" and the wizard won't overwrite your home program
custoem user defined.PNG
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
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