Hi In book Industrial Automation and Process Control I found interesting sequence for tuning: 1. Turn all gains to zero. 2. Adjust the proportional gain until the system begins to oscillate. 3. Reduce the proportional gain until the oscillation stops and then reduce it by about 20 percent more. 4. Increase the derivative term to improve the system stability. 5. Next raise the integral term until the system reaches the point of instability and reduce it slightly. Sequences 1-3 very clear. Sequence 4 means increase D until graph will be represent with line and not with line that has noise (vibration type). Am I right here? Sequence 5. What is mean instability? Is this same as an oscillation? I know what oscillation means, but what instability is and how it will be represented on Hal Scope. Thank you, Aram
> a...@conceptmachinery.com wrote: >> Hello >> I want to ask question about tuning of servomotor. >> >> 1. In Calibration window I think missing FF3 parameter. Is it important >> to >> put FF3 into Calibration window? >> > There is no FF3. Do you mean FF2? If the FF2 line doesn't appear in > the .ini file, then it will not appear in the > calibration window, either. Just edit it into the .ini file with a > value of 0.0 and you can then adjust it in the cal. window. >> My question is how to determine what jag increment should be? >> > I usually use a jog that takes about 1/2 to one second to complete the > entire move. > > Jon > > ------------------------------------------------------------------------------ > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
