Acceleration of U-Axis asynchronous to XYZ

poolspieler wrote:

I found this linuxcnc.org/docs/html/man/man9/hypot.9.html#FUNCTIONS page.
This should explain, how to use it.

It would be handy, wouldn't it? Those pages are just auto-generated from the components themselves.
You could read this doc: www.linuxcnc.org/docs/html/hal/intro.html

But it boils down to adding this to your HAL (put it in the custom.hal if you don't want stepconf to over-write it)

loadrt hypot count=1
addf hypot.0 servo-thread
net xvel axis.0.joint-vel-cmd hypot.0.in0
net yvel axis.1.joint-vel-cmd hypot.0.in1

And then the cartesian velocity can be seen on the hypot.0.out pin.

You can compare it to motion.current-vel pin. If it is the same then there is no point having it. Whether it is the same depends on if U is part of the built-in velocity command.

I am wondering if there is any scope for using adaptive feed based on a goop-pressure sensor.

Well you might start with the comp manual...

John