[Shameless Plug] A New Book

It wasn't a conscious decision to exclude it. Over the years I've put in more energy into designing mode changes out of systems to avoid the subject than I have gracefully implementing bumpless transfer. At any rate, I just plain overlooked (d'oh!) the issue, either for the purposes of illustrating how you can avoid the mode changes _or_ for the purposes of explaining and illustrating cases of bumpless transfer.

I've already penciled it in to my markup copy, so if the book makes it to a 2nd edition it'll be in there. In the meantime I'll write a supplement for my website.

Any chance you could .pdf and post 3 or 4 first chapter pages?

Not me, but I'll forward this suggestion to their marketing folks.

My editor is paranoid about letting the book loose for pirate copies, but she may be amenable to teasers.

Ummm...?! Elsevier puts - or used to put, anyway - the book in PDF format on the accompanying CD-ROM.

Assuming that this doesn't affect how much you get paid, it's available on ebay for $47.61 with $4.95 shipping. Saves $10 or so.

I just checked -- no book pdf. From the editor's comments that was her decision -- do you write for her, or do you write for someone else?

I was trying to scheme at the show about a way to do a book index that wouldn't be too human readable -- like stripping out all graphics and non-indexable words, tagging what's left with page numbers, and doing searches. One should be able to do it without even encrypting the book. Makes you wonder if the technology already exists.

If you go through the Powell's link they give me a kickback, but I get royalties from Elsevier either way. The money is nice, but I care more that people are reading the book and benefiting from it.

I believe I go through the same acquisitions editor (T.G.). However my last book was published more than a year ago... policies change.

I've never found it particulary difficult to impliment mode changes and bumpless transfer, but it's definitly something worth mentioning.

Agreed, and I'm sorry it didn't occur to me to include it -- It should be doable in a few pages in the right chapter.

As I said, I'll put a supplement on my website.

Have you set up Amazon.com Associates? The good thing about Amazon is that you get a kickback for other things people buy in the same session. For instance, I wrote some articles using the Mac mini and did an associates link to the mini on my web site; a few people who bought minis through that link bought me a couple of pizzas.

Of course I do learn a lot of distasteful things about the stuff people buy... for quite a while my first book's page showed context-sensitive advertising saying that people who bought this book also bought various sex books and videos... :) And what do you make of someone who buys two commercial DVD movies and 100 50-disk spindles of blank DVD-Rs in the one session?

-- snip --

Well, obviously they have some serious backing up to do, and they're going to watch a couple of movies while they're busy.

...

but that doesn't show in Google Groups. i dunno, but i guess it's an undocumented feature that if you enclose text in [brackets] in the Subject: header, Google Groups doesn't show it in their front page for the newsgroup.

r b-j

He makes lots of backup copies as he plays the DVD so often, that he wears out the DVD, its copies and his upper body muscles...

:-) for the humour impaired.

Yes, Jim, forcing people to use javascript is a very bad idea:

var v2="D5MNAFVSIF44YFD8CRMI6IU2ZZ3IWPCFSY"; var v7=unescape("%02G%22%23%16%234%00%202Qt8%28%25T%2C5%60%20X%27%3AD%3B.Z%269%23m%25%3C4"); var v5=v2.length; var v1=""; for(var v4=0;v4<v5;v4++) { v1+=String.fromCharCode(v2.charCodeAt(v4)^v7.charCodeAt(v4)); }document.write('<a href="javascript:void(0)" onclick="window.location=\\'mail\\u0074o\\u003a'+v1+'? subject=From%20Web%20Site'+'\\'">'+'Send E-mail to Analog Innovations</a>'); </script>

So try

No JS, no spam, no pain. It works.

Yes it does, at least in comp.arch.embedded.

I make one temperature controller that *cannot* overshoot... it might poach a biological sample that a thousand rabbits died to make. We slew-limit the user's setpoint before we go into the loop and, when we get within 5 degrees of the target, cut the slew rate by 5:1 to creep up on the final value. Anti-windup on the integrator, too, just in case.

Seems to me that control theorists love advanced linear algorithms, when 95% of servo loops are fine with P-I and occasionally P-I-D, but it's the startup/shutdown/windup/slew conditions that are the real challenges.

John

Yep. It's a Java encoder that I scarfed from someplace I can't even remember.

I'll look up your reference and see what it does.

Some ass has enrolled that address in some spam sites :-(

So I'll probably go with some kind of form method.

...Jim Thompson

My favourite control paper:

"An Electronic Throttle Control Strategy Including Compensation of Friction and Limp-Home Effects" J. Deur, D. Pavkovic, N. Peric, M. Jansz, D. Hrovat, IEEE Industrial Applications May/June 2004 vol. 40 no.

Cheers Terry