On Mon, 24 Sep 2012 08:52:47 -0500, you wrote:
>"One line lookahead" is a little misleading. The limitation that Steve
>describes comes from the calculation of the suggested velocity for each line
>segment. The algorithm has the effect of clamping the machine velocity to a
>value from which the machine could decelerate to a controlled stop in each
>particular line segment. It's nicely described here:
>http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Simple_Tp_Notes
Mach treats the deceleration differently. I posted Art's description on
26 July last year.
It's not helped by the outstanding problem with changes to feedrate on
transitions from arcs to lines or vice versa that you highlighted last
year also.
Steve Blackmore
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