Peter C. Wallace wrote: > Timestamp based velocity estimation improves this quite a bit (the software > encoder, Mesa and Pico systems encoders all have this feature) Careful! Only the Universal PWM Controller currently has the timestamp feature. I do intend to get it into the other products sometime. As far as I know, no one else is using it on Pico products, as the driver side of the feature won't get into the docs until 2.5 is released.
but I suspect a 1 million count encoder is going to beat the timestamp system by a wide margin. One problem with the Fanuc serial encoders is they report the position count when interrogated, so you lose the ability to timestamp the arrival of the counts. On the other hand, the higher angular resolution certainly should help reduce the rumbling, etc. from getting just a couple counts/servo cycle. Jon ------------------------------------------------------------------------------ Achieve unprecedented app performance and reliability What every C/C++ and Fortran developer should know. Learn how Intel has extended the reach of its next-generation tools to help boost performance applications - inlcuding clusters. http://p.sf.net/sfu/intel-dev2devmay _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers