yea iv'e just seen gedit mucking with the files , i wondered where it was coming from iv'e started using KATE instead ,, it's also usefull for xml editing too
On 19 September 2014 22:22, Gene Heskett <ghesk...@wdtv.com> wrote: > Hi have made a wee bit of progress with the spindle controls on the lathe, > but lower speed performance is still sorely lacking. > > Current pid.s settings > Pgain 125 > Igain .05 > FF0 100 > FF1 20 > > maxoutput is set 1% below the pwmgen scale to keep it from hitting 100% > duty cycle. Since this is a parameter, I cannot put the gearchange > bewteen the pid and the pwmgen because the pwmgens scale and the > pid.maxoutput limits must be maintained. > > pid.s.bias is the product of watching the abs.piddir outputs, which is fed > from the motion.speed-rps output via a limit2 for speed ramping control. > > It is developed by using a abs.piddir.is-positive > bit_u32 >u32_float > fed into a sum2.in0. > > Conversely reverse is an identical chain of is-negative > bit_u32 > >u32_float fed to sum2.in1 > > Then since the bias isn't at pid input level but added to the output > the scaling of sum2.gain0 =60.0 and sum2.gain1 = -60.0. > > So the output is fed to pid.s.bias with a polarity matching the command > input, basically to overcome friction. It actually works fairly well as I > do get quite close to matching speeds in both chuck rotation directions. > > But, I have a speed bias in favor of higher than requested all the way > from wide open down to a s30. > > s5000 = 1407 > s1300 = 1366 > s1200 = 1267 > s1100 = 1164 > and it follows a reasonable straight line down to > s100 = 112 > s50 = 60 > s30 = 40 > and at s29 it stops because thats less than the minimum duty cycle so no > pulse is delivered. No big deal as that is too slow for useful work in > high backgear anyway, and gearchange ATM is in-circuit but running at its > default gain of 1.0 on both inputs. > > Thats tomorrow project. > > Now, I have noted that changing the pid.s.maxout and and pwmgen.scale > seems to also function as a method of matching speeds obtained to the > requested speed and will do a bit more of that tomorrow. > > I have also developed a method that watches the pid.s.error and uses a > sum2 feeding back on itself to keep an incremental error count that I will > eventually use to switch the gearchange.sel line, basically scaling up the > pid.command so as to minimize the error accumulation. I will be doing the > gear shifting in the head by hand, and use the accumulated error, which > can accumulate to rather large figures over time to switch the gearchange > in an attempt to equalize the running error. More drive at the slower > speeds is sure in order due to the loss of torque when the motor is only > doing 150 rpm. > > But!!!!!!!! > > I had to change editors from gedit to geany because gedit was snatching > 10 to 15 character snippets of the file and inserting then at several > other places in the file, totally mucking with variable names and such. > At about 1 in 20 saves I'd guess. > > Has anyone else had a similar problem with gedit? Its a PIMA when it > happens, to have to do all that edit, restart lcnc to get the next error's > line number so you can re-edit and fix it till it will actually run again. > It can be 20+ minutes to fix it all again. And it totally screws with > this old farts train of thought. > > Suggestions welcomed of course. > > Thanks for reading & I hope I've not muddied the issue too badly. > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > Genes Web page <http://geneslinuxbox.net:6309/gene> > US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS > > > ------------------------------------------------------------------------------ > Slashdot TV. Video for Nerds. Stuff that Matters. > > http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that Matters. http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
