linear motor -- copley control corp. servotube's high speed motion

[[email protected]]

Hello everyone,
Is there anyone has ever used the copley control corp. made linear
motor,
Servotube or Thrustube? I am very curious about their high velocity(up
to 6m/s even 14m/s), with their max travel is only about 1300mm. How
can they get a so high velocityis such a short distance?
I mean can they really stop in this distance, when they move in such a
high speed?

For example, Servotube 3804:
Force (peak) (N) 744
Force (cont.) (N) 137
Velocity (max.) (m/s) 6.0
Travel (max.) (mm) 1360

 

[[email protected]]

Hello everyone,
Is there anyone has ever used the copley control corp. made linear
motor,
Servotube or Thrustube? I am very curious about their high velocity(up
to 6m/s even 14m/s), with their max travel is only about 1300mm. How
can they get a so high velocityis such a short distance?
I mean can they really stop in this distance, when they move in such a
high speed?

For example, Servotube 3804:
Force (peak) (N) 744
Force (cont.) (N) 137
Velocity (max.) (m/s) 6.0
Travel (max.) (mm) 1360

They seem to have a standard linear stepping motor forcer. These have
been around for more than thirty years now, and can produce spectacular
speed and accelerations, given enough current - in this case the
currents might melt the forcer if sustained for more than a few
fractions of a second, though you'd stop the heating befor you heated
the magenitc path over its Curie point (a rather lower temperature).

I've got a couple of text-books on the subject back on my desk in
Nijmegen - a decent university library should offer more.

I've never got to use one - the one I ordered (for EMI Cental Research)
from Inland Motor back in 1978 didn't work when immersed in very thin
oil (which we needed) so they sold it someone else.