Need to Invert PE curve before loading into Mach1GTO?


Keith Egger
 

Thanks Roland. So I’ll assume that re-meshing has no effect on PE then. Good to know. 

Keith


Roland Christen
 


am I correct that re-meshing the worm gear doesn't require redoing the PEC?
Yes, that is correct.

Rolando


-----Original Message-----
From: Keith Egger <eggerk@...>
To: main@ap-gto.groups.io
Sent: Sat, Mar 13, 2021 11:40 am
Subject: [ap-gto] Need to Invert PE curve before loading into Mach1GTO?

Having finished my re-greasing, which involved removing the motors, I had to redo my PEC. I ran 6 worm cycles in PEMPro last night and generated a PE curve this morning. In the workflow PEMPro says to load the curve, then run a couple of cycles and if the PE is doubled, Invert the curve and reload. I didn't have time to load the curve last night and check, so does the Mach1GTO need the PE curve to be inverted before loading or not?

Another question, am I correct that re-meshing the worm gear doesn't require redoing the PEC? Does re-meshing have any effect on the periodic error at all, as in increasing or decreasing?

thanks,
Keith

--
Roland Christen
Astro-Physics


Keith Egger
 

I did calibrate right before acquisition, so apparently I should not need to invert.

I'm still interested in the answers to these questions though:

     Am I correct that re-meshing the worm gear doesn't require redoing the PEC?

     Does re-meshing have any effect on the periodic error at all, as in increasing or decreasing?

thanks,
Keith


 

Hi Keith

>>> I didn't have time to load the curve last night and check, so does the Mach1GTO need the PE curve to be inverted before loading or not?

you have to test that by loading the curve and running it to see the results, and then based on the results, you invert it or not.

Brian


On Sat, Mar 13, 2021 at 9:40 AM Keith Egger <eggerk@...> wrote:
Having finished my re-greasing, which involved removing the motors, I had to redo my PEC. I ran 6 worm cycles in PEMPro last night and generated a PE curve this morning. In the workflow PEMPro says to load the curve, then run a couple of cycles and if the PE is doubled, Invert the curve and reload. I didn't have time to load the curve last night and check, so does the Mach1GTO need the PE curve to be inverted before loading or not?

Another question, am I correct that re-meshing the worm gear doesn't require redoing the PEC? Does re-meshing have any effect on the periodic error at all, as in increasing or decreasing?

thanks,
Keith



--
Brian 



Brian Valente


Keith Egger
 

Thanks!


Ray Gralak
 

Having finished my re-greasing, which involved removing the motors, I had to redo my PEC. I ran 6 worm cycles in
PEMPro last night and generated a PE curve this morning. In the workflow PEMPro says to load the curve, then run
a couple of cycles and if the PE is doubled, Invert the curve and reload. I didn't have time to load the curve last night
and check, so does the Mach1GTO need the PE curve to be inverted before loading or not?
If you run PEMPro's calibration wizard (as directed in the instructions) just before acquiring data you should not need to invert the curve.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Keith Egger
Sent: Saturday, March 13, 2021 9:40 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] Need to Invert PE curve before loading into Mach1GTO?

Having finished my re-greasing, which involved removing the motors, I had to redo my PEC. I ran 6 worm cycles in
PEMPro last night and generated a PE curve this morning. In the workflow PEMPro says to load the curve, then run
a couple of cycles and if the PE is doubled, Invert the curve and reload. I didn't have time to load the curve last night
and check, so does the Mach1GTO need the PE curve to be inverted before loading or not?

Another question, am I correct that re-meshing the worm gear doesn't require redoing the PEC? Does re-meshing
have any effect on the periodic error at all, as in increasing or decreasing?

thanks,
Keith


Keith Egger
 

Having finished my re-greasing, which involved removing the motors, I had to redo my PEC. I ran 6 worm cycles in PEMPro last night and generated a PE curve this morning. In the workflow PEMPro says to load the curve, then run a couple of cycles and if the PE is doubled, Invert the curve and reload. I didn't have time to load the curve last night and check, so does the Mach1GTO need the PE curve to be inverted before loading or not?

Another question, am I correct that re-meshing the worm gear doesn't require redoing the PEC? Does re-meshing have any effect on the periodic error at all, as in increasing or decreasing?

thanks,
Keith