On Dec 9, 2011, at 6:07 PM, andy pugh wrote: > On 9 December 2011 22:57, Tom Easterday <[email protected]> wrote: > >> I only see this page in the documentation on KINEMATIC_BOTH: >> http://linuxcnc.org/docview/html/motion_kinematics.html#kinematics >> and it doesn't make clear that I need to set something. Do I and where is >> it? > > You need to choose one of the valid kinematics types. As far as I know there > is no documentation on them, and you have to guess. > >> Not sure what you mean by verifying forward and inverse matching for all >> inputs? > > A kinematics routine defines a translation from joint positions to > cartesian location, and the inverse transformation. Both pieces of > code have to match, so that if you pass the same numbers through one > way, then back through the other, you should get exactly the same > numbers back. > This can mean having to find alternative formulations of the equations > if floating point arithmetic gives subtly different answers, as that > will lead to the joints drifting. > > This isn't a problem with Gantrykins, there is no maths in there.
Choose it where? I have done loadrt gantrykins in the kinematics.hal file, is that choosing one of the types or is that something different? -Tom ------------------------------------------------------------------------------ Learn Windows Azure Live! Tuesday, Dec 13, 2011 Microsoft is holding a special Learn Windows Azure training event for developers. It will provide a great way to learn Windows Azure and what it provides. You can attend the event by watching it streamed LIVE online. Learn more at http://p.sf.net/sfu/ms-windowsazure _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
