Found that the a,b signal were hook up backward it help a lot Still not smooth but operates close need more tunning now that it works
-----Original Message----- From: Jon Elson [mailto:el...@pico-systems.com] Sent: Wednesday, July 11, 2012 12:37 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Spindle hooked to dc servo amp Kasey Matejcek wrote: > Yes the ppmc.0.pwm.00-03.freq 50000 > After playing some time I've come up with this it responds from 2 rpm > to 14 rpm when you set s this give and accual spindle speed from about > 35 to 75 rpm But there is no to little control if load is applied to > the spindle As soon as any p,I,g are added then it unstable surging up > and down > Sure, with FF0 only, it is still an open-loop speed control. it is even possible you have the phase of the servo loop backwards. You might try a negative value in P and see if it helps control it under load. If so, then your P, I and D values should all be negative. Jon ---------------------------------------------------------------------------- -- 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
