>It seems to me that an external square signal might cause an overly >aggressive acceleration.
Only when you want to impress the neighbours with a shaking building . . . A few millivolt of signal at about 50 Hz or so, depending on the bandwidth of the system, is enough. Just check at a slightly higher value when you think you are done, if there is backlash the frequency response might change at the higher input value. Having said all that: I have never driven an amp into current saturation yet. In fact if you are scared turn the max current down a bit. Once you drive the amp into saturation though, the frequency response will be badly affected. j. On Tue, Oct 11, 2011 at 7:56 PM, Kirk Wallace <kwall...@wallacecompany.com>wrote: > On Tue, 2011-10-11 at 12:41 -0500, Jon Elson wrote: > > Frank Tkalcevic wrote: > > > I opened the first pdf and it has an article on pid tuning. It > suggests > > > applying a square wave command and tuning from that. How hard is it to > > > generate a square wave in emc? Will this require hal trickery or can > it be > > > done with GCode? > > > > > Yes, there is a hal component called siggen that can produce sine and > > square waves. > > It seems to me that an external square signal might cause an overly > aggressive acceleration. I did my tunning with a g-code 1 inch dance or > shuffle, seemed to work okay. > > -- > Kirk Wallace > http://www.wallacecompany.com/machine_shop/ > http://www.wallacecompany.com/E45/index.html > California, USA > > > > ------------------------------------------------------------------------------ > All the data continuously generated in your IT infrastructure contains a > definitive record of customers, application performance, security > threats, fraudulent activity and more. Splunk takes this data and makes > sense of it. Business sense. IT sense. Common sense. > http://p.sf.net/sfu/splunk-d2d-oct > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
