I think that is what the Oriental Motors Alpha steppers do (that may not be their 'official' name). Shopbot uses them in their 'alpha' series machines. It basically determines if steps are lost and compensates at some level.
Roger wrote: > Stephen Wille Padnos <spad...@...> writes: > > >> This is a function of the motor driver, not the control software. >> >> > > Steve, > Your absolutely correct but I could imagine how software could be used to > emulate closed loop control with a step direction drive. In the case of a lost > step software could lower the axis speed/acceleration and add or subtract the > step value from the machines current position so that the trajectory planner > could take the lost step into account. > > Not perfect but maybe good enough. > > Roger > > > > > > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
