22 квітня 2012 р. 22:34 Peter C. Wallace <[email protected]> написав:
> When the encoder velocity estimation is used it is not as affected by > encoder resolution as the normal D/DT of position. This is because the > velocty estimation measures counts/delta_time rather than count per servo > period. the delta_time being measured by time stamping encoder signal edges > with a 1 Usec resolution clock. The velocity estimation is still affected > by quadrature error (deviation from exact 90 degree phase shift between A > and B) so if this can be improved (some encoders have gain pots on the A > and B photodiode amps) > I read the thread about PID tuning, and some ideas appeared. The question is: how to set deadband? You said it should be 0 for 7i39, as it has internal deadband management. Andrew ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
