petr ruzicka wrote: > good Day gents > Seems like there has been lots of updates / upgrades.. i'm wondeirng if > someone implemented linear scales with full servo mode? How it turned up If your linear scales have sufficient resolution for servo mode (some scales meant for DRO use don't really have fine enough resolution for CNC) and if the backlash between the motor and the scale is small enough, then it certainly should work. You pretty much need a hardware encoder counter to be sure you don't miss counts.
If you have a lot of backlash between the motor and the scale (mostly would be worn ball nuts) then you will have a problem with a lot of servo "hunting". The only linear scale systems I am familiar with is on some of Stuart Stevenson's large machines at MPM in Wichita, Kansas. I am sure they work well for him. One of his machines has linear scales PLUS shaft encoders on the motors. That system is also working well. Jon ------------------------------------------------------------------------------ Special Offer -- Download ArcSight Logger for FREE! Finally, a world-class log management solution at an even better price-free! And you'll get a free "Love Thy Logs" t-shirt when you download Logger. Secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsisghtdev2dev _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
