Re: [Emc-developers] Jerk Control

2011-04-18 Thread Yi-Shin Li
On Mon, Apr 18, 2011 at 7:37 PM, andy pugh bodge...@gmail.com wrote: I seem to recall somebody on IRC talking about jerk control (d3x/dt3). There is someone on the Forum extolling the virtues of jerk limitation on Fanuc machines, and I was wondering if it is likely to be introduced into

Re: [Emc-developers] pid bug

2011-02-09 Thread Yi-Shin Li
On Tue, Feb 8, 2011 at 11:26 PM, Peter C. Wallace p...@mesanet.com wrote: --- if ( ( tmp1 * pid-limit_state ) = 0.0 ) { +++ if ( ( tmp1 * pid-limit_state * pid-igain ) = 0.0 ) { Is a possible patch if negative PID values are to be allowed Based on the diagram of this page

Re: [Emc-developers] Servo question ...

2010-09-21 Thread Yi-Shin Li
On Tue, Sep 21, 2010 at 9:39 PM, Lars Segerlund lars.segerl...@gmail.comwrote: I have heard you guys speak highly of servos, and I haven't got a clue if you are running DC or AC servo motors ? I played with AC servo motors. The reason is that I have some AC servo motors around 100W or

Re: [Emc-developers] StepGen

2010-09-18 Thread Yi-Shin Li
On Sat, Sep 18, 2010 at 3:24 PM, Slavko Kocjancic esla...@gmail.com wrote: Na 17.9.2010 23:15, Kenneth Lerman je pisal: On 09/17/2010 04:26 AM, Slavko Kocjancic wrote: Peter thanks. I didn't realy calculate the worst case scenario. Just observed that acceleration is calculated on

Re: [Emc-developers] Fix total NURBS breakage

2010-03-25 Thread Yi-Shin Li
On Fri, Mar 26, 2010 at 8:21 AM, Alexey Starikovskiy aysta...@gmail.comwrote: EBo пишет: Alexey Starikovskiy aysta...@gmail.com said: I have not been keeping abreast of the NURBS issues. Were the previous questions about scaling and transformations related to NURBS? Also, is the

Re: [Emc-developers] port EMC2 to Beagle Board

2009-11-24 Thread Yi-Shin Li
On Wed, Nov 25, 2009 at 2:02 AM, Jon Elson el...@pico-systems.com wrote: Well, I have the Beagle that Matt had been working on, does he have another one? If there are two other developers who have them, that may well be enough for serious development work to continue. I should have these EPP

Re: [Emc-developers] the trajectory planner might not besuitableforany machines with non-trivial kinematics

2009-11-19 Thread Yi-Shin Li
On Wed, Nov 11, 2009 at 3:59 AM, Alex Joni alex.j...@robcon.ro wrote: Hi, you are correct it's not right in this case. (I didn't follow the exact calls, but if it's like you did, then you're right). It should probably be defined in the ini, at least as sane velocities for TRAJ. I am not

Re: [Emc-developers] the trajectory planner might not be suitableforany machines with non-trivial kinematics

2009-11-10 Thread Yi-Shin Li
on _joints_ limits. Regards, Alex - Original Message - *From:* Yi-Shin Li y...@araisrobo.com *To:* EMC developers emc-developers@lists.sourceforge.net *Sent:* Sunday, November 08, 2009 2:01 PM *Subject:* Re: [Emc-developers] the trajectory planner might not be suitableforany machines