On Saturday 12 April 2014 15:40:08 Jon Elson did opine: > On 04/12/2014 08:18 AM, Philipp Burch wrote: > > Anyway, figuring out the maximum with a servo system > > should be easier, at least if your hardware can handle the > > maximum torque of the drives. Just set the acceleration > > limit to some insanely large value (100'000mm/s^2 or so) > > and then do a G0 move with one joint at a time while > > logging the encoder feedback with halscope. You'll > > probably need to temporarily raise your FERROR and > > MIN_FERROR to about the magnitude of the move for this. > > Mr. Frey indicated he is using Gecko 320-series drives, so > he may > not have any way to read high encoder rates on his system. > (If he's using hardware step generation, then he may be able > to.) > But, with just a simple breakout board, it could get difficult. > Depending on model of Gecko drive, they may not fault out > until 128 encoder counts of following error develops.
Yikes! AIUI, the gecko's also have rather leasurely pulse timing requirements. My 2M542's seem to be tolerant of 10x faster pulses. > Jon Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Put Bad Developers to Shame Dominate Development with Jenkins Continuous Integration Continuously Automate Build, Test & Deployment Start a new project now. Try Jenkins in the cloud. http://p.sf.net/sfu/13600_Cloudbees _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
