Hi, there is no current feedback yet and the over current protection is copied from the UHU servo controller (http://www.uhu-servo.de/). The next version will have a small cpu for this stuff (cheaper, neads less space and is far more flexible). We are planning to include a current prediction in software based an our motor simulator. Our current pid component does it with an open loop PD controller. But the main problem is the noise amplification in position derivation for velocity feedback. Therefor the main development is currently done in realtime filter algorithems without too much phase shift. We have plenty of calculation power, so we can even experiment with stuff like total variation denoising or polynomial fit at 5kHz (our current pid freqency, resolver positions come in at 20kHz). Our hal like framework and the terminal realy speeds testing up, as we are able to rewire and reconfigure the hole system on the fly and get instant feedback.
Nico > On 11/22/2014 12:49 PM, el cringo wrote: >> Hi, >> i just added pdfs for the current hw version. The eagle files are for >> version 6.5.0. We once tried KiCad but we are a lot better with eagle. > > Thank you. I looked at your pdfs. I also installed the latest LinuxCNC ( > 2.6 with Wheezy) on a PC and loaded Eagle 7, so I can open Eagle files > now. It took a while to figure out Git Hub (I normally use Bitbucket) > and downloaded your files. There really isn't that much magic in the > hardware, except maybe the current feedback/limit bit. It seems the > magic is in the software. I'm looking forward to watching your progress. > > ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
