Shameless Plug

[Tim Wescott]

I will be presenting two topics at the 2005 Embedded Systems Conference
San Francisco next March -- see http://www.esconline.com/sf/ for show
details.

"Basic Control Theory for the Software Engineer" is as much information
on the z-transform as I can fit into 90 minutes. It gives a
high-altitude overview of designing software control loops in a
systematic manner.

"PID Without a PhD" is a primer on developing PID controllers in
software, tuning them without using higher math, and avoiding some of
the common pitfalls for this popular controller form.


--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

 

[Joerg]

Hi Tim,

Just let us know what day and time. Do you plan to publish these? The
PID session sounds very interesting.

BTW, Scott Adams (Dilbert) is going to speak as well.

Regards, Joerg

http://www.analogconsultants.com

 

[martin griffith]

On Tue, 30 Nov 2004 01:39:02 GMT, in sci.electronics.design Joerg
<notthisjoergsch@removethispacbell.net> wrote:

Hi Tim,

Just let us know what day and time. Do you plan to publish these? The
PID session sounds very interesting.

BTW, Scott Adams (Dilbert) is going to speak as well.

Regards, Joerg

http://www.analogconsultants.com

"Mr. Adams held a variety of -- in his words -- "humiliating and low
paying jobs" .........and pseudo-engineer."

Any nice/apt/funny definitions of " pseudo-engineer"?


martin

Serious error.
All shortcuts have disappeared.
Screen. Mind. Both are blank.

 

[Winfield Hill]

Guy Macon wrote...

"Why do half the engineers call it Proportional-Integral-Derivative"
and others call it "Proportional-Integral-Differential?" When I
did a Google search on "proportional integral differential" I got
18,600 hits while "proportional integral differential" only had
3,060 hits, but most of the "proportional integral differential"
hits seem to be by scientists and equipment manufacturers.
Which is correct?"

proportional integral derivative - 253,000 hits = correct
proportional integral differential - 315,000 hits = wrong


--
Thanks,
- Win

 

[Winfield Hill]

Francis wrote...

Try a searching the whole phrase

Google for "proportional integral derivative" gets 18,600
Google for "proportional integral differential" gets 3,060

Phew, that's a relief.


--
Thanks,
- Win

 

[Roger Hamlett]

"Winfield Hill" <hill_a@t_rowland-dotties-harvard-dot.s-edu> wrote in
message news:cohse107bd@drn.newsguy.com...

Guy Macon wrote...

"Why do half the engineers call it Proportional-Integral-Derivative"
and others call it "Proportional-Integral-Differential?" When I
did a Google search on "proportional integral differential" I got
18,600 hits while "proportional integral differential" only had
3,060 hits, but most of the "proportional integral differential"
hits seem to be by scientists and equipment manufacturers.
Which is correct?"

proportional integral derivative - 253,000 hits = correct
proportional integral differential - 315,000 hits = wrong
Both are right...

Guess what, a 'differential equation', is one including a 'rate of change'
(derivative) term...

Best Wishes

 

[Jim Thompson]

On Tue, 30 Nov 2004 12:54:01 -0500, Spehro Pefhany
<speffSNIP@interlogDOTyou.knowwhat> wrote:

[snip]

"proportional intergral derivative" 29 hits
"proportional intergral differential" 18 hits



Best regards,
Spehro Pefhany

"intergral" ?

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[Jim Thompson]

On Tue, 30 Nov 2004 13:07:37 -0500, Jerry Avins <jya@ieee.org> wrote:

[snip]

It's simple: the level of literacy, even among "college boys", is
appallingly low. Consider how many write "there" when they mean "their"
or "they're".

[snip]
Jerry

Engineers, as a class, are notoriously bad spellers/grammarians.

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[Guy Macon]

Tim Wescott wrote:

I fear that my mind was poisoned long ago by a German instructor who
pointed out that modern linguistic theory doesn't much recognize a
"right way" and a "wrong way" -- it just records prevalent usage, and
tries to keep out of the way of the steamroller.

I tend to agree, but the "wrong way" hinders communication if it is
*too* different from the "right way." If one decides to use a few
non-standard fleemishes and the reader can still gloork the meaning
from the context, but there ix a limit; If too many ot the vleeps
are changed, it becomes harder and qixer to fllf what the wethcz
is blorping, and evenually izs is bkb longer possible to ghilred
frok at wifx. Dnighth? Ngfipht yk ur! Uvq the hhvd or hnnngh.
Blorgk? Blorgk! Blorgkity-blorgk!!!!

 

[Clarence]

"Jim Thompson" <thegreatone@example.com> wrote in message
news:abepq0tt82o05fqiiikdq60v0bl3mvlpce@4ax.com...

On Tue, 30 Nov 2004 13:07:37 -0500, Jerry Avins <jya@ieee.org> wrote:

[snip]

It's simple: the level of literacy, even among "college boys", is
appallingly low. Consider how many write "there" when they mean "their"
or "they're".

[snip]
Jerry

Engineers, as a class, are notoriously bad spellers/grammarians.

...Jim Thompson

Hardwired!

 

[Winfield Hill]

Guy Macon wrote...

I tend to agree, but the "wrong way" hinders communication if it is
*too* different from the "right way." If one decides to use a few
non-standard fleemishes and the reader can still gloork the meaning
from the context, but there ix a limit; If too many ot the vleeps
are changed, it becomes harder and qixer to fllf what the wethcz
is blorping, and evenually izs is bkb longer possible to ghilred
frok at wifx. Dnighth? Ngfipht yk ur! Uvq the hhvd or hnnngh.
Blorgk? Blorgk! Blorgkity-blorgk!!!!

ROFLOL, LOL-LMAOXD, ROXCGHRKFITR! YUREBDH!


--
Thanks,
- Win

 

[John Sampson]

Tim Wescott <tim@wescottnospamdesign.com> wrote in message news:<10qngi1gmp7pr14@corp.supernews.com>...

I will be presenting two topics at the 2005 Embedded Systems Conference
San Francisco next March -- see http://www.esconline.com/sf/ for show
details.

"Basic Control Theory for the Software Engineer" is as much information
on the z-transform as I can fit into 90 minutes. It gives a
high-altitude overview of designing software control loops in a
systematic manner.

"PID Without a PhD" is a primer on developing PID controllers in
software, tuning them without using higher math, and avoiding some of
the common pitfalls for this popular controller form.

I have the new issue and plan to read it on the plane tomorrow. Congratulations.

BTW, why is ESP so thin now? Embedded Systems Pamphlet ?????

I remember when it used to be 3 or 4 times longer, consistently.

John

 

[JeffM]

...I did a Google search...
Winfield Hill

...The quotation marks are important...
Guy Macon

With few exceptions, hyphens are equally effective--perhaps more so,
because e.g., it finds things with 'online' when you enter 'on-line'.

When posting a link, hyphenated search strings are superior.
(A double-quote mark tacks a '%A' onto the front of a search term
making it difficult to search the Google archive for that term.)

 

[Louis Bybee]

"Guy Macon" <http://www.guymacon.com> wrote in message
news:10qpfh0mn84pve3@corp.supernews.com...

Tim Wescott wrote:

I fear that my mind was poisoned long ago by a German instructor who
pointed out that modern linguistic theory doesn't much recognize a
"right way" and a "wrong way" -- it just records prevalent usage, and
tries to keep out of the way of the steamroller.

I tend to agree, but the "wrong way" hinders communication if it is
*too* different from the "right way." If one decides to use a few
non-standard fleemishes and the reader can still gloork the meaning
from the context, but there ix a limit; If too many ot the vleeps
are changed, it becomes harder and qixer to fllf what the wethcz
is blorping, and evenually izs is bkb longer possible to ghilred
frok at wifx. Dnighth? Ngfipht yk ur! Uvq the hhvd or hnnngh.
Blorgk? Blorgk! Blorgkity-blorgk!!!!


Finally someone who speaks my language!

The first clear, concise, and lucid post in quite a while!

A little off track at first, but you wrapped it up nicely towards the end!
)

Louis--
*********************************************
Remove the two fish in address to respond

 

[Winfield Hill]

Jerry Avins wrote...

I bought a small panel meter, probably out of an airplane cockpit,
that had Japanese markings molded into the inside of the case.
The design itself had been blindly copied. Prominent in the inside
center of the back cover were the letters, "Simpson".

Right. Bart Simpson.


--
Thanks,
- Win

 

[Lasse Langwadt Christense]

Guy Macon <http://www.guymacon.com> wrote in message news:<10qoea0ci864ef2@corp.supernews.com>...

Tim Wescott wrote:

snip
I also found it helpful
to show how to use a stopwatch and odometer to derive speed with
no speedometer, a stopwatch and speedometer to derive distance
without an odometer, and a speedometer and odometer to derive
elapsed time with no stopwatch. Your audience is different,
of course - this worked really well with mechanical engineers,
but software engineers are quite different.

Maybe it's just me, but shouldn't this be obvious
to anyone who's had even basic physics in school?


-Lasse

 

[Guy Macon]

Lasse Langwadt Christensen wrote:

Maybe it's just me, but shouldn't this be obvious
to anyone who's had even basic physics in school?

Only those who went to school back when they were still teaching
how to apply basic physics to real-world problems.

To be fair, some schools do a great job of this, but I have
personal experience of a person who got an EE degree from a
state college without ever tumbling on to the fact that when
you send current down a wire there has to be an equal current
through a return path.

That engineer was put to work maintaining COBOL programs.
This was in the '90s, not in the age of COBOL.

 

[Jerry Avins]

Geoff wrote:

...

The linguistics scene has "descriptive grammarians" (currently in the
ascendant) versus "prescriptive grammarians" (started declining maybe 50
years ago). That's why I regularly find books, and even learned papers,
which confuse "throes" with "throws", "pour" with "pore", and many more,
since schools ceased to bother students with (horror!) rules,
substantive examinations etc.

That really peaks (or is it peeks?) my ire.

...

Jerry
--
Engineering is the art of making what you want from things you can get.
ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ

 

[Guy Macon]

Jerry Avins wrote:

BFoelsch wrote:

"Jerry Avins" <jya@ieee.org> wrote in message

That really peaks (or is it peeks?) my ire.

Piques. I'm prescriptive.

Good for you. I was being sarcastic (and rueful). I assumed
that the "peek" would signal that I was poking fun.

Wordplay is the peak of humor.

 

[Guy Macon]

John Monro wrote:

Talking about word usage, Trolling is a hot topic in some of the other
threads. I always thought that Trolls were monsters that lived under
bridges in Scandinavia and who gobbled up travelers. Trawling is the
process of dragging a net through the sea to catch fish, although
'Trolling' is also used.

I believe that "trolling" is dragging a lure or baited hook through
the water to catch fish. A net catches wahtever is there. A hook
only catches those who take the bait.