4/22/2009 10:51 AM | |||
Posts: 4 Rating: (0) |
Dear sirs, We have an 840D with several 611D-s andwe want to reduce the friction of the axis, to do a more exact force measurement or to get more exact positioning of the axis. One of the techniques is to superimpose a high frecunecy sine wave signal, (1-4 khz), in the current loop , and we'd like to know if exists anyway to do it. We've thought to do it over the speed loop using hardware fast inputs but we don't know if we would have the enough update frecuency of the harware input data. Maybe someone knows another way to do it Best regards
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