some screenshots of the term(already outdated), and our development hardware https://www.dropbox.com/s/gqx0h809odek0pj/Screenshot%202014-11-04%2016.03.51.png?dl=0 https://www.dropbox.com/s/5k7ji9ncqy5t3w7/Screenshot%202014-11-04%2016.06.08.png?dl=0 https://www.dropbox.com/s/m0s75igxbtm3qw8/2014-10-23%2012.27.22.jpg?dl=0
On 24 Nov 2014, at 02:50, Rene Hopf <reneh...@mac.com> wrote: > > On 24 Nov 2014, at 02:02, Kirk Wallace <kwall...@wallacecompany.com> wrote: > >> 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. > > There is no magic in the power stage, comes right from the iramx datasheet. > At the moment there is no current feedback to the MCU, only a hardware limit. > We give the motor a Voltage, which results in a current. > As we know how fast the motor is, we can compensate for induction. > The part that took us a while to figure out was the resolver driving hardware. > I took a lot of breadboarding and simulation in LTspice, which are included > in the git. > in fact we are still working on noise issues with resolver feedback. > The speed derived from the position amplifies the ADC noise, resulting in > jittering output. > It is not enough to move anything mechanical connected to the motor, but the > current makes an irritating noise. > A simple (software)lowpass is shifting the phase, resulting in oscillation. > > Rene > > > >> >> >> -- >> Kirk Wallace >> http://www.wallacecompany.com/machine_shop/ >> http://www.wallacecompany.com/E45/ >> >> ------------------------------------------------------------------------------ >> 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 > > > ------------------------------------------------------------------------------ > 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 ------------------------------------------------------------------------------ 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
