i was reading the step/servo thread
... this is related but OT
clear me up on in this...
about very slow motion with steppers and servos
assuming the minimum position change is .001mm
( commanded step or feedback unit
so: a single step moves .001"
and any feedback has .001 resolution )
when the system gets a command to move another .001mm,
what happens when the velocity requested is .001mm per second?
in a stepper system, does it go clunk and wait 999millisecss?
(or wait 999 then go clunk, or at 500mSec etc.)?
in a servo system does it crawl towards the destination over the whole
second?
do we see important differences if the velocity is reduced by say 10?
or increased by 10?
( is the motion jerky?
and
does motion stay jerky till velocity and the machine frame dampen it)
i think any sudden jerks are bad for machining and process control.
any of the above?
thx
TomP tjtr33
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