Re: Hi, and 2 questions (kinematics and look-ahead)

[Jon Elson <elson-at-pico-systems.com>]

Dave Engvall wrote:

> Robin,
> Good for you thinking about emc rather than XX.
>
> There is already table driven code for correction on the same axis but your
> problem needs to relate correction in Z to X (and maybe Y). This would look
> like a possible post-processor application (table driven or maybe
> calculated).  Calibrating it other than assuming a loaded beam might be a
> problem.  Just thoughts off the top of my sometimes rather blank head.

No, you can't do this with a post-processor without breaking long moves into
smaller segments, and then interpolating small moves into the supposedly
stationary axis for each segment.  This sounds pretty cumbersome.  It
would work, but the programming could get a bit tricky for all possible
combinations of moves.

Jon