[Emc-users] latency calculation
I need know how to calculate latency in EMC2's latency-test. could anyone tell me the latency test's algorithm? -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] lantency calculation
sorry,,I mean the base and servo thread.. how do we calculate them? -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] lantency calculation
thanks for the answer Jeff,, now, how do we calculate base_period and servo period? Jeff Epler jep...@... writes: The latency-test runs the following realtime component: http://git.linuxcnc.org/gitweb?p=emc2.git;a=blob;f=src/hal/components/timedelta.comp Each time a realtime thread runs, the time interval del=(now-last) is computed. The minimum and maximum del ever seen are computed in min_ and max_. The jitter is the bigger of max_-period or period-min_. period is the promised realtime interval in nanoseconds, and rtapi_get_time() is the measured wall time also in nanoseconds. The timedelta component also measures long term error in 'err' and 'avg_err'. These values are not shown in the latency-test GUI but can be used to determine if there are long-term differences between expected and actual intervals. Jeff -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] zero speed problem with servo pack Yaskawa SGDM
Thanks,,, I had tried to adjust the speed reference offset, the encoder still give the feedback but it small now maybe it's the noise from the power cable -- ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] zero speed problem with servo pack Yaskawa SGDM
I use Yaskawa SGDM 02AD as servo pack and SGMAH as servo motor,, when I turned on the servo motor with zero speed reference (zero input reference),, the motor didn't move,,but the encoder still give feedback signal to emc2,, so the counter increased slowly (never stop),,, it turned an error to emc2,, how I solve this problem?? -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
