Re: [Emc-developers] Spindle speed signal

That sounds right, it's a queue buster because of the spindle speed change, so it acts like exact stop. I'm still not sure why it's capping the speed at 237RPM. Your outputs make sense (~19 ipm at ~270RPM actual speed is about 0.07 in / rev). I'll poke around some more and see what I can find.

Re: [Emc-developers] Spindle speed signal

oh - what - did you mention you get exact stop when it is trying to change the spindle speed? Is that why it is happening on this system? sam On 12/14/2016 05:56 PM, sam sokolik wrote: > Here is a plot with motion.spindle-speed-in > >

Re: [Emc-developers] Spindle speed signal

also - am I seeing an exact stop at the pull out? 2.7 doesn't seem to do that. (I am positive we want blending on pull out) http://electronicsam.com/images/KandT/testing/robthreading/latest/current2.png sam On 12/14/2016 05:56 PM, sam sokolik wrote: > Here is a plot with

Re: [Emc-developers] Spindle speed signal

Here is a plot with motion.spindle-speed-in http://electronicsam.com/images/KandT/testing/robthreading/latest/robnewandspindlein.png sam On 12/11/2016 03:52 PM, Robert Ellenberg wrote: > Sam, one last thing, is it possible to put the spindle-speed-in pin on a > halscope channel? I'd like to

Re: [Emc-developers] Spindle speed signal

There is no filtering. Here is the complete config net spindle-vel encoder.0.velocity motion.spindle-speed-in http://electronicsam.com/images/KandT/testing/robthreading/latest/Emco_HalfFull_Morph.tar.gz I can scope more pins but it will have to wait a few days. sam On 12/11/2016 03:44 PM,

Re: [Emc-developers] Spindle speed signal

Sam, one last thing, is it possible to put the spindle-speed-in pin on a halscope channel? I'd like to see what the spindle velocity is when it transitions out of accel sync. On Sun, Dec 11, 2016 at 4:44 PM Robert Ellenberg wrote: > Thanks for giving it a spin! > > I am still

Re: [Emc-developers] Spindle speed signal

Hi Gene, I don't fully understand your question, but I have reason to think that my fixes will improve position tracking accuracy and consistency, and may help in the scenario you describe. In case you're not familiar with motion's internals, here's what happens at the start of a position sync

Re: [Emc-developers] Spindle speed signal

Thanks for giving it a spin! I am still getting the error about the spindle going too fast.. You can see the threading is happening at 19.12 ipm and the axis max vel is 30ipm. I tried a similar config and got the same result (could be both configs have some odd issue we have not figured out.)

Re: [Emc-developers] Spindle speed signal

Threading air.. The motion seems a lot more consistent - no funny blip the original did. run after run looked pretty much identical in halscope. http://electronicsam.com/images/KandT/testing/robthreading/latest/newthreadingfix.png motion.spindle-tracking-gain set to .5

Re: [Emc-developers] Spindle speed signal

On Sunday 11 December 2016 09:17:32 Robert Ellenberg wrote: > Ahh, that would have been smart to include before: > >- sim_spindle_encoder's position signal is now quantized based on >encoder resolution. >- Use motion.spindle-speed-in as the velocity reference for spindle >position

Re: [Emc-developers] Spindle speed signal

Ahh, that would have been smart to include before: - sim_spindle_encoder's position signal is now quantized based on encoder resolution. - Use motion.spindle-speed-in as the velocity reference for spindle position tracking (falls back to old velocity calculation if this pin is

Re: [Emc-developers] Spindle speed signal

On 11 December 2016 at 06:30, Robert Ellenberg wrote: > For anyone interested in testing, my latest branch based on Peter's > suggestion, and a bunch of other spindle tracking fixes is here: Can you explain what is changed and improved? -- atp "A motorcycle is a bicycle with

Re: [Emc-developers] Spindle speed signal

On Sunday 11 December 2016 01:30:42 Robert Ellenberg wrote: > For anyone interested in testing, my latest branch based on Peter's > suggestion, and a bunch of other spindle tracking fixes is here: > > https://github.com/robEllenberg/linuxcnc-mirror/tree/feature/spindle-s >ync-overhaul-2.7 > >

Re: [Emc-developers] Spindle speed signal

For anyone interested in testing, my latest branch based on Peter's suggestion, and a bunch of other spindle tracking fixes is here: https://github.com/robEllenberg/linuxcnc-mirror/tree/feature/spindle-sync-overhaul-2.7 I've tweaked a lot of spindle tracking code, so I'd be careful when running

Re: [Emc-developers] Spindle speed signal

Peter, I like your idea of calculating a velocity if none is provided. I'll take a look at the PID component. Andy / Chris, from your feedback, it sounds like cases like Jon's are rare, but we shouldn't break them. Peter's approach gives a safe if suboptimal fallback. If the future manual

Re: [Emc-developers] Spindle speed signal

On 12/08/2016 12:19 PM, andy pugh wrote: > On 8 December 2016 at 18:10, Robert Ellenberg wrote: >> Does anyone use a spindle encoder with only position output? In other >> words, encoder position linked to motion.spindle-revs, but no input to >> motion.spindle-speed-in? > I

Re: [Emc-developers] Spindle speed signal

On Thu, Dec 08, 2016 at 06:10:09PM +, Robert Ellenberg wrote: > Hi All, > > Does anyone use a spindle encoder with only position output? In other > words, encoder position linked to motion.spindle-revs, but no input to > motion.spindle-speed-in? motion.spindle-speed-in IN FLOAT

Re: [Emc-developers] Spindle speed signal

On 8 December 2016 at 18:10, Robert Ellenberg wrote: > Does anyone use a spindle encoder with only position output? In other > words, encoder position linked to motion.spindle-revs, but no input to > motion.spindle-speed-in? I would imagine that it might be uncommon, but not