Re: [Emc-developers] motion-profile generation math help

2008-07-27 Thread Joel C. Salomon
On Sun, Jul 27, 2008 at 12:35 PM, Jeff Epler <[EMAIL PROTECTED]> wrote: > Can you please say a few more words about the problem? Note that I'm not using EMC; just asking for mathematical help for writing my own code for company-internal use. I know of no problem with the EMC code, except that I

Re: [Emc-developers] motion-profile generation math help

2008-07-27 Thread Jeff Epler
On Sun, Jul 27, 2008 at 10:06:37AM -0400, Joel C. Salomon wrote: > problems with the cut have been observed that seem to indicate this > problem. Not so noticeable in straight-line cuts, but very problematic > in circles; but I need to understand the one before I tamper with the > other. Can you p

Re: [Emc-developers] motion-profile generation math help

2008-07-27 Thread Ray Henry
On Sun, 2008-07-27 at 10:06 -0400, Joel C. Salomon wrote: Looks like a proper thread to me. (see further note below) > It reverses the normal flow of conversation. > > What's wrong with top-posting? > > Top-posting. > > Wh

Re: [Emc-developers] motion-profile generation math help

2008-07-27 Thread Joel C. Salomon
On Sun, Jul 27, 2008 at 6:42 AM, Darren Conway wrote: > For my job, I need to understand how adjustments are made to (what I'm >> calling) velocity–ramp-up/-down–time, and constant-velocity–coast–time in >> order to ensure that these are integer multiples of the time step. If you >> can explain th

Re: [Emc-developers] motion-profile generation math help

2008-07-27 Thread Darren Conway
Hello I'm a lurker on the list and I noticed you haven't had a reply. I am also a control systems engineer and I may be able to help out. Before you tackle this problem, are you sure you have one. If the sample rate is sufficiently higher than the time constants, then corrections/adjustmen