University of Michigan Speed-up algorithm

[Harry Smirnow]

Interesting article on a new algorithm for 3D printers developed at the University of Michigan. They demonstrated increased print speed by compensating for machine vibration. It mentions they're looking at adding it into Marlin.

https://3dprint.com/195734/um-update-algorithm/

Sailfish already gave us considerable speed improvements over stock firmware with acceleration. Is the U of M approach similar? Any potential here for version 8.0?

Harry S.

[Daniel Newman]

Other issues aside, the technigue was not new and has been around since at least
2012 when I saw a live demonstation of it by a company which had developed the
concept, patented it, and then built it into their industrial stepper and servo
motor control systems, including equipment to measure the frequency response
of the drive trains which the motors would be driving. If indeed it is patented,
it's not suitable for incorporation into the firmware.

Dan

[John Driggers]

Wasn't that the Meridian g-Stop system?

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[Daniel Newman]

On 08/12/2017 10:09 PM, John Driggers wrote:
> Wasn't that the Meridian g-Stop system?

Hi John!

Yes, and you even called it to our attention some years back. The
current youtube video they have on their home page shows a 2016 date,
but I know it was some time before then when you mentioned them in
one of the 3DP forums. (And their first patent for avoiding
resonant frequencies with motors was filed 2007.)

Best Regards,
Dan

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Jetty-firmware Dec 8, 10:09 PM EST

Wasn't that the Meridian g-Stop system?

On Fri, Dec 8, 2017 at 2:23 PM, Daniel Newman <dan.c....@icloud.com> wrote:

On 08/12/2017 3:14 PM, Harry Smirnow wrote:

Other issues aside, the technigue was not new and has been around since at least 2012 when I saw a live demonstation of it by a company which had developed the concept, patented it, and then built it into their industrial stepper and servo motor control systems, including equipment to measure the frequency response of the drive trains which the motors would be driving.  If indeed it is patented, it's not suitable for incorporation into the firmware. Dan -- You received this message because you are subscribed to the Google Groups "Jetty Firmware" group. To unsubscribe from this group and stop receiving emails from it, send an email to jetty-firmware+unsubscribe@googlegroups.com. For more options, visit https://groups.google.com/d/optout.

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Jetty-firmware Dec 8, 3:23 PM EST

> Interesting article on a new algorithm for 3D printers developed at the University of Michigan. They demonstrated increased print speed by compensating for machine vibration. It mentions they're looking at adding it into Marlin. > > https://3dprint.com/195734/um-update-algorithm/ > > Sailfish already gave us considerable speed improvements over stock firmware with acceleration. Is the U of M approach similar? Any potential here for version 8.0?

Other issues aside, the technigue was not new and has been around since at least

2012 when I saw a live demonstation of it by a company which had developed the concept, patented it, and then built it into their industrial stepper and servo motor control systems, including equipment to measure the frequency response of the drive trains which the motors would be driving. If indeed it is patented, it's not suitable for incorporation into the firmware.

Dan

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Jetty-firmware Dec 8, 3:15 PM EST

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