Hello Guest it is November 21, 2019, 06:28:18 PM

Author Topic: Constant velocity  (Read 37302 times)

0 Members and 1 Guest are viewing this topic.

Offline stirling

*
  • *
  •  2,188 2,188
  • UK
    • View Profile
    • www.razordance.co.uk
Re: Constant velocity
« Reply #30 on: October 02, 2007, 01:45:58 PM »
No problem Brian.

Great avatar by the way - did you have it specially designed for you?  :D

Thanks

Ian
Re: Constant velocity
« Reply #31 on: October 02, 2007, 02:35:44 PM »
Benny did it  ;D

I need the days to be 48 Hours and about 20 days in the week... if I time was like that I could do so much more!
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com
Re: Constant velocity
« Reply #32 on: October 12, 2007, 09:09:11 PM »
Any more information on CV yet?

Offline stirling

*
  • *
  •  2,188 2,188
  • UK
    • View Profile
    • www.razordance.co.uk
Re: Constant velocity
« Reply #33 on: October 16, 2007, 03:21:38 PM »
seconded... come on folks there must be more than the handful of people in this thread that need CV to work properly... or are you all secretly turning it off or... using T**C?!!!!! ;D

I know Art, Brian et al are busy and have to schedule priorities but with the support this thread is getting it's a no brainer (sic) why it's not at the top of their list.
Re: Constant velocity
« Reply #34 on: October 16, 2007, 07:37:25 PM »
Ian,

Your quite right that the CV works on CW angles but not on CCW angles.  I did the same tests that you performed in your post of 9/28/07 which answers my questions.  I have dropped back to version 2.42 which does not have the problem.  Most of the routing I do is in a CCW direction so I can't use the latest code until this if fixed.  Maybe Brian or Art will hear us and give a progress report.

Tom
Re: Constant velocity
« Reply #35 on: October 17, 2007, 07:39:19 PM »
Brian,
To go along with the drawing Ian provided on 9/28/07, I'm attaching a sample tap file that demonstrates the failure.

It's a sine wave that shows how CV drops out when angles are in a [CCW] direction.
Running at 70 ipm you see the speed moving right along during the first half of the wave, chord angles are [CW] and CV is working.
Now in the second half of the wave the chord angles are [CCW] and it slows way down, CV has dropped out.

In Config/General Logic Config:
    CV Dist Tolerance = 0.01
    Stop CV on angles > 35 Degrees

Hope this will be useful to you.
Regards,
Tom
Re: Constant velocity
« Reply #36 on: October 19, 2007, 09:11:01 PM »
I just got back and I will work with Art to see if we can find where the problem is with the CV... Thanks and sorry for the delay
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com

Offline ART

*
  • *
  •  1,698 1,698
  • Tough as soggy paper.
    • View Profile
Re: Constant velocity
« Reply #37 on: October 22, 2007, 11:50:12 PM »
Hi Guys:

  Direction of movement error in CV found and fixed for the next release.
Sorry for the long delay on the fix.. We did manage to find it this evening..

Art
Re: Constant velocity
« Reply #38 on: October 23, 2007, 02:40:38 AM »
Thanks Art & Brian.  Will watch for next release.

Regards,
Tom

Offline stirling

*
  • *
  •  2,188 2,188
  • UK
    • View Profile
    • www.razordance.co.uk
Re: Constant velocity
« Reply #39 on: October 23, 2007, 03:20:07 AM »
Art, Brian - many thanks

Ian