On Sat, 10 Dec 2016, Frederic RIBLE wrote: > Date: Sat, 10 Dec 2016 01:26:02 +0100 > From: Frederic RIBLE <[email protected]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: [email protected] > Subject: Re: [Emc-users] Fanuc analog drive & LinuxCNC tuning > > On 09/12/2016 21:48, Peter C. Wallace wrote: > >> >> There are only some 10s of usec between reading the encoder and writing the >> PWM value, assuming the read and write functions are in the proper order in >> the hal file. Also Fred said that changing the servo thread from 1 to 10 KHZ >> made little difference, so I dont think its a loop bandwith issue >> >> > Good idea, we have to check the functions order. > About original Fanuc F/V converter delay comparing to mesa, > unfortunately we cannot measure because it is faulty. > Another clue: we have very similar oscillations at low or high speed. > So the problem is not coming from period/frequency mode switching in the > velocity estimation algorithms. >
What is the magnitude of the oscillation? can you plot it and provide a link to the plot? > > ------------------------------------------------------------------------------ > Developer Access Program for Intel Xeon Phi Processors > Access to Intel Xeon Phi processor-based developer platforms. > With one year of Intel Parallel Studio XE. > Training and support from Colfax. > Order your platform today.http://sdm.link/xeonphi > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today.http://sdm.link/xeonphi _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
