Jon Elson <elson@...> writes:
> Yeah, actually, I'd like to see one of these spikes zoomed in on the > time scale so it is See image 9 here: https://sites.google.com/site/bmklawt/home/pid-tuning > Bruce says he has run it back > and forth for > a half hour, and it was within one encoder count of proper position > (.0005") It seems VERY > unlikely it could do that without errors accumulating. I am not following this, why can't it do this without errors accumulating. > I think Bruce has an oscilloscope, I do not have one, wouldn't have a clue how to use it if I did. I unhooked the Y and Z axis amps and only had the X axis plugged into the DAC board and when running the X axis it still had random jerks. Here are two videos of the jitter I get in the Z and Y axis. The first one showing the Z axis jitter when the X axis is moving back and forth. The knob is on the end of the servo motor. http://www.youtube.com/watch?v=7wZQwee8bec The second one is of the Y axis while the X axis is homing, as soon as the X axis stop so does the Y jitter http://www.youtube.com/watch?v=O66oefYwhp0 ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2dcopy2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
