On Sunday 02 December 2007, Peter C. Wallace wrote: >I do like the open loop idea of full force for 1/2 of the time and then >reversing the the force (I've known people who drive like that) > >Also with the galvanometer, absolute angular accuracy is probably less >important that repeatbility. > >For something frictionless, repeatable, having constant mass and no distrurb >forces like a galvanometer, Feed forward will get you a long way, maybe even >with a pre stored time based force profile. (HP was doing this on their 14" >disk drive head positioners in the 70's)
So did Dynex in their version that TI used in their main frames, failing miserably though. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Oh, I get it!! "The BEACH goes on", huh, SONNY?? ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
