Gene Heskett wrote: > > To continue this thread, I went out and whacked at the hal file, converting > the limit2 module that was controlling the rate of rise and fall of the > requested spindle speed, to a lowpass module. > > Setup with a gain of 0.005, and with an s1000m3 in effect, typing an m4 > initiates the reversal, it takes about 2.5 seconds or a hair more to stop, > then the same rpms are achieved in reverse in maybe 1.25 seconds. So the > difference is nothing short of amazing because with the limit module, it > took 2.5 to 3 seconds to get back up to speed, with cabinet shaking jerks > at the beginning of the acceleration. My guess is that the jerk has been > reduced by a noticeable amount. Hah! So, I was right to use the lowpass function when I set up rigid tapping on my mill! Several people told me to use limit, but I never went back to change it, as the lowpass version seemed to work fine. I guess ignorance is bliss, some of the time!
Jon ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
