On Thu, 2007-12-06 at 23:01 -0500, xtra209 wrote:
I checked out some treadmill motors rescued from defunct treadmills and
discovered they are really not reversible. Mine will run in both
directions but one direction the armature arcs more than the other
direction. A closer investigation of
Kirk Wallace wrote:
On Thu, 2007-12-06 at 14:08 -0800, Peter C. Wallace wrote:
What is your deadzone?
... snip
If you mean deadband, I have it set to 1e-05. I set it to 1e-04 and
1e-06 which had no effect.
You need to set it to 3E-03 to get it above your stated
backlash. (You can try
I got the first pass on my Bridgeport X axis working and I am having
trouble with tuning. I am using a brushed DC motor with a 3:1 belt ratio
between the motor and ballscrew. The motor is driven by a Pico PWM amp
and controlled by a Pico UPC and EMC 2.1.7. Because a glass slide was
already
] Slides, Endoders and Resulotion
I got the first pass on my Bridgeport X axis working and I am having
trouble with tuning. I am using a brushed DC motor with a 3:1 belt ratio
between the motor and ballscrew. The motor is driven by a Pico PWM amp
and controlled by a Pico UPC and EMC 2.1.7. Because
Kirk Wallace wrote:
I got the first pass on my Bridgeport X axis working and I am having
trouble with tuning. I am using a brushed DC motor with a 3:1 belt ratio
between the motor and ballscrew. The motor is driven by a Pico PWM amp
and controlled by a Pico UPC and EMC 2.1.7. Because a glass
I checked out some treadmill motors rescued from defunct treadmills and
discovered they are really not reversible. Mine will run in both
directions but one direction the armature arcs more than the other
direction. A closer investigation of the motor showed that the brushes
contact the
On Thu, Dec 06, 2007 at 08:22:15PM -0800, Dave Engvall wrote:
Having said that it would be most interesting to have a system that
used the information from both a linear scale and an encoder on the
ball screw. I'll let the really bright guys dope out how to make that
work. ;-)
If
On Dec 6, 2007, at 6:56 PM, Jon Elson wrote:
Kirk Wallace wrote:
I got the first pass on my Bridgeport X axis working and I am having
trouble with tuning. I am using a brushed DC motor with a 3:1 belt
ratio
between the motor and ballscrew. The motor is driven by a Pico PWM
amp
and
Dave Engvall wrote:
Having said that it would be most interesting to have a system that
used the information from both a linear scale and an encoder on the
ball screw. I'll let the really bright guys dope out how to make that
work. ;-)
Since EMC's PID loop is now part of HAL and
(EMC) emc-users@lists.sourceforge.net
Subject: [Emc-users] Slides, Endoders and Resulotion
I got the first pass on my Bridgeport X axis working and I am having
... snip
controller. Is there a way to cater to both?
One way is to use dual feedback, Dont know if EMC supports
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