> On Friday 18 March 2016 16:00:27 Nicklas Karlsson wrote: > > > I have seen and run machinekit, it is linuxcnc. I have also read about > > BeagleBone. There are plenty of devices suitable to generate the > > pulses but at which rate should pulses generated? Constant > > acceleration between different speeds? > > Ideally, the accel (and decel) should be t=rc curve or close, ...
No, t=rc is for the current/torque rise/fall time. For the speed it is rather basic physics. Flux is needed to generate torque. Induced voltage depend on speed of flux change so for higher speed more voltage is induced. It is possible to increase speed by lowering flux but in such case maximum torque will sink. Anyway as is now for a stepper I will use fast acceleration in one direction and slow in the other => then they line up no steps are lost at maximum acceleration. Regards Nicklas Karlsson ------------------------------------------------------------------------------ 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=278785231&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
