On Tuesday, May 08, 2012 05:00:12 PM andy pugh did opine: > On 8 May 2012 21:38, gene heskett <[email protected]> wrote: > >> I believe that FF0 + I is the way to go. WIth FF0 set to rpm/duty > >> cycle and a much smaller I than you currently have to take up the > >> error. > > > > Would that not require a dynamic, dependent on speed, FF0 then? Since > > rps can easily go from .5 to 40 if its full speed capability is used. > > That is a fairly wide, and likely the topp 2/3rds of it never used, > > but... > > > > Can this FF0 be derived from the encoder? > > Either I don't understand the question, or you don't understand FF0. > > Assuming the former, can you re-phrase it?
Assume the latter Andy. Most of the terms I see flying around for pid are a strange language to me. Wiki pages I've read so far start at some point 'above my grade'. :( My formal education stopped shortly into my freshman year in high school. I had health probs, allergies, that the school declined to honor the absence excuses from the sawbones, so I went out to work fixing what was then these newfangled things called televisions. This was about 1948 & I was 14. I did eventually fix the allergies, starting with milk. The rest as they say, is history. :) I am truly self-taught in electronics,usually by an idiot who claims to have an IQ of 147, or at least that is what the tests said in 1947. 5 years later, Korea & the draft, and the AFQT test given to recruits, about 135 kids that day. I made a 98/100, the next best score in that batch of 135 horny boys was 36/100. That triggered a visit to the 'shrink on retainer' and my answer to his question "How do you feel" was, since I had been working hard all summer to that point but 3 days of laying around I was so stiff & sore even walking was a chore made me show an attitude. My answer? "nothing a hard days work, a piece of ass & a good cigar wouldn't cure." Said with dead a straight face. I honestly at that point did not have a quarter I would have spent to call anybody that might care. So I was sent home, washed out, and got a card from the draft people a few days later that said I was 4F'd. Presumably because my type wouldn't take orders in mid-battle. I carried that card for the next 40 years. A bit of a relief actually, I could get on with my life, maybe even find me a good woman, which I did but it took another 5 years, had her for about 10 years before she had stroke & died, leaving me with 3, 2 of which have since passed with cancer. Oldest then was 9. I miss all 3 of the girls yet. There's lots more of course, but I am no doubt boring the list as is, so I'll shut up. Thanks Andy. 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) My web page: <http://coyoteden.dyndns-free.com:85/gene> I'd horsewhip you if I had a horse. -- Groucho Marx ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
