On Tuesday 01 May 2012 21:40:50 Joachim Franek wrote: > It is wrong for example for a gantry setup (2 y-axes). > http://wiki.linuxcnc.org/cgi-bin/wiki.pl?FiveAxisGantry > The traverse acts like a spring (bends) and the z-axis as a mass: > -> a low frequency mechanical vibration is possible. > With an unlimited jerc a movement of the 2 y-axes induces > a frequency spectrum. If the 5th harmonic stimulates I must correct me: sinc is not harmonic.
> this mechanical resonance and the resulting vibration is not tolerable > it is recommanded to reduce the amplitude of the high harmonics. > With a jerk=f(t) it is possible to increase the acceleration because > the higher frequency components are low in amplitude and > do not stimulate machanical resonances. Joachim ------------------------------------------------------------------------------ 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-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
