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Pete_Gruendeman <[email protected]> wrote: Hi Nicklaus: Someone more knowledgeable that I will need to tell us about the pulse generator frequencies that are used under various burn conditions. I am of the opinion that the servo response does not need to be faster than that pulse frequency. Pete I have tables I developed for gr/st using 3 grades of graphite. Tables are sequences of on off peak selected by contact area. You choose by area. Then end the sequence at the desired finish. These belong to me. Not proprietary. Will be PD if license is good for community. Else I just give away I have a scheme in linuxcnc to open the table file then select the next power stage and set the hardware . its simple mcode using python. I will post tables and mcodes soon. Can you tell us what costs are of servo control at 1kHz and 40 kHz? Hardware or processor time costs?; proprietary versus public domain software? While sinker EDM primarily uses Z motion, it is by no means exclusively Z motion. Many projects use the other axes, either part of the time or all of the time. The motion control for all the axes needs to be equally responsive as long as one or more users operate on more than the Z axis. AFIK Z-axis only motion is appropriate for hole popping EDMs. My macros for heidenhain asked operator for the tool axis and reference position . operator supplied distance from ref to move over clamps then how close when power on and final cavity depth. This allows cuts in xyz in plus and minus :-) I will try to convert to canned orbiting cycles for linuxcnc if I ever get the sine cosine gen to play nice with edm gap control. We COULD. have circular spherical and rectangular orbits automated thru the tables. I don't have these motions Good yet but expect it is possible in HAL Pete Gruendeman Tomp tjtr33 -------------------------------------------- On Thu, 3/3/16, Nicklas Karlsson <[email protected]> wrote: Subject: Re: [Emc-developers] EDM gap control (Control parameters) To: "Pete_Gruendeman" <[email protected]>, "EMC developers" <[email protected]> Date: Thursday, March 3, 2016, 12:01 PM > ... 40kHz servo response is very responsive but not necessary if the spark frequency is less than that. > Pete Gruendeman I have a choice between 40kHz servo thread inside driver or linuxcnc 1kHz servo thread. For z motion only choice is simple but for motion of several axis/joints for example wire EDM? Nicklas Karlsson Be aware of the cubed rate... When 2 axis move at same time they have higher speed. Ditto for 3d moves! Old stepper edms did not take care and were not stable ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785111&iu=/4140 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
