i know i've asked this of my IEEE bros here, but if someone has access to old IEEE papers (with no additional cost to them), would you be so kind to get me a .pdf copy of this: Bernhardsson, "The predictive first order hold circuit", Proceedings of the 29th IEEE Conference on Decision and Control, 1990. ? http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=203948 it's more for my own curiosity and a desire to compare to what Wikipedia says it is: https://en.wikipedia.org/wiki/First-order_hold is there a definitive definition of whatever a 1st-order hold is somewhere else? don't plan to do anything work related with it (can't say that about some of my other recent questions here). i may have asked this before, but i don't seem to have such a document living on my laptop. thanks. -- r b-j rbj@audioimagination.com "Imagination is more important than knowledge."
predictive first order hold (another IEEE paper request)
Started by ●April 28, 2015
Reply by ●April 28, 20152015-04-28
On Tue, 28 Apr 2015 16:44:33 -0400, robert bristow-johnson wrote:> i know i've asked this of my IEEE bros here, but if someone has access > to old IEEE papers (with no additional cost to them), would you be so > kind to get me a .pdf copy of this: > > Bernhardsson, "The predictive first order hold circuit", Proceedings of > the 29th IEEE Conference on Decision and Control, 1990. > > ? > > http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=203948 > > it's more for my own curiosity and a desire to compare to what Wikipedia > says it is: https://en.wikipedia.org/wiki/First-order_hold > > is there a definitive definition of whatever a 1st-order hold is > somewhere else? > > don't plan to do anything work related with it (can't say that about > some of my other recent questions here). i may have asked this before, > but i don't seem to have such a document living on my laptop.It looks like something one might publish about if one needed a paper for a conference. Having skimmed the paper I'm not sure where the advantage lies over just thumping in one sample's delay into the controller and putting in a "regular" first-order hold. -- Tim Wescott Wescott Design Services http://www.wescottdesign.com
Reply by ●April 28, 20152015-04-28
On 4/28/15 5:17 PM, Tim Wescott wrote:> On Tue, 28 Apr 2015 16:44:33 -0400, robert bristow-johnson wrote: > >> i know i've asked this of my IEEE bros here, but if someone has access >> to old IEEE papers (with no additional cost to them), would you be so >> kind to get me a .pdf copy of this: >> >> Bernhardsson, "The predictive first order hold circuit", Proceedings of >> the 29th IEEE Conference on Decision and Control, 1990. >> >> ? >> >> http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=203948 >> >> it's more for my own curiosity and a desire to compare to what Wikipedia >> says it is: https://en.wikipedia.org/wiki/First-order_hold >> >> is there a definitive definition of whatever a 1st-order hold is >> somewhere else? >> >> don't plan to do anything work related with it (can't say that about >> some of my other recent questions here). i may have asked this before, >> but i don't seem to have such a document living on my laptop. > > It looks like something one might publish about if one needed a paper for > a conference. > > Having skimmed the paper I'm not sure where the advantage lies over just > thumping in one sample's delay into the controller and putting in a > "regular" first-order hold. >and it looks in upper right corner of Figure 1 that the author swaps the meaning of regular-old FoH with predictive FoH. who is the authority of the terminology? (seems to me that Wikipedia is still the most sensible with the terms.) thanks guys. -- r b-j rbj@audioimagination.com "Imagination is more important than knowledge."
Reply by ●April 29, 20152015-04-29
On Wednesday, April 29, 2015 at 8:44:36 AM UTC+12, robert bristow-johnson wrote:> i know i've asked this of my IEEE bros here, but if someone has access > to old IEEE papers (with no additional cost to them), would you be so > kind to get me a .pdf copy of this: > > Bernhardsson, "The predictive first order hold circuit", Proceedings of > the 29th IEEE Conference on Decision and Control, 1990. > > ? > > http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=203948 > > it's more for my own curiosity and a desire to compare to what Wikipedia > says it is: https://en.wikipedia.org/wiki/First-order_hold > > is there a definitive definition of whatever a 1st-order hold is > somewhere else? > > don't plan to do anything work related with it (can't say that about > some of my other recent questions here). i may have asked this before, > but i don't seem to have such a document living on my laptop. > > thanks. > > -- > > r b-j rbj@audioimagination.com > > "Imagination is more important than knowledge."I wonder what difference it makes since you need a filter after the hold anyway when reconstructing. Interesting that many systems don't even use a D to A any more because they have PWM outputs from the micro and H bridge feeding directly into motors.
