MPG causing axis oscillations.
04 Apr 2016 12:11 #72704
by eman5oh
Replied by eman5oh on topic MPG causing axis oscillations.
The issue has crept back up as I go through commissioning my machine. I turned on backlash comp and I occasionally get following errors while mpg jogging again. I had to raise the following error or I could not home the machine , it would give a following error during the homing sequence.
Please Log in or Create an account to join the conversation.
04 Apr 2016 14:25 #72718
by PCW
Replied by PCW on topic MPG causing axis oscillations.
This is not unexpected as you need to double the stepgens maxaccel value
if backlash compensation is used ( this applies to all step/dir linuxcnc systems )
if backlash compensation is used ( this applies to all step/dir linuxcnc systems )
Please Log in or Create an account to join the conversation.
04 Apr 2016 14:44 #72720
by eman5oh
Replied by eman5oh on topic MPG causing axis oscillations.
Ok will try this, they were 25% higher as per the note in the generated ini file. I will up them to double.
Please Log in or Create an account to join the conversation.
04 Apr 2016 14:50 #72722
by PCW
Replied by PCW on topic MPG causing axis oscillations.
I meant double their current value (so 250% of machine accel value)
Please Log in or Create an account to join the conversation.
04 Apr 2016 14:57 #72723
by eman5oh
Replied by eman5oh on topic MPG causing axis oscillations.
So that I am clear, if my machine is set to 10 units of accel normally the max accel should be 25 units?
Please Log in or Create an account to join the conversation.
04 Apr 2016 16:11 #72727
by PCW
Replied by PCW on topic MPG causing axis oscillations.
Yes, 25, because the trajectory planner uses double the machines per axis acceleration limits when
performing backlash compensation so 2 x1.25 = 250%
performing backlash compensation so 2 x1.25 = 250%
The following user(s) said Thank You: eman5oh
Please Log in or Create an account to join the conversation.
Time to create page: 0.141 seconds