They have a lot of torque ripple and are harder to micro step. Given these factors their development is usually very targeted, so you won't generally find them lying about in surplus piles.
For things like plasma and torch cutters they are probably a very cost effective alternative, if you can find them. N. Christopher Perry On May 2, 2013, at 14:38, Cogoman <cogo...@optimum.net> wrote: > I believe I have seen them used to advance the roller on an electric > typewriter. When the current is off, there's no cogging like hybrid steppers > have. That makes adjust paper height by hand seem normal for a typewriter. > Sent from my Kyocera Rise > > Roland Jollivet <roland.jolli...@gmail.com> wrote: > >> Hi All >> >> Can anyone tell me if they are actually using variable reluctance motors as >> servos on CNC machines. >> >> I find it odd that such a simple motor is not in greater use. The only >> place I've ever seen them used was to position the head on old 8in floppy >> drives. >> Maybe they just don't have a good power to size ratio? >> >> Regards >> Roland >> ------------------------------------------------------------------------------ >> Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET >> Get 100% visibility into your production application - at no cost. >> Code-level diagnostics for performance bottlenecks with <2% overhead >> Download for free and get started troubleshooting in minutes. >> http://p.sf.net/sfu/appdyn_d2d_ap1 >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ > Get 100% visibility into Java/.NET code with AppDynamics Lite > It's a free troubleshooting tool designed for production > Get down to code-level detail for bottlenecks, with <2% overhead. > Download for free and get started troubleshooting in minutes. > http://p.sf.net/sfu/appdyn_d2d_ap2 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite It's a free troubleshooting tool designed for production Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
