whats in your nick?

Thursday, December 26, 2002 by Lord Vimal | Discussion: WinCustomize Talk

well, why did you choose ________ to be ur nick?
any funny reason?
my nick is my name...except for that "Lord"

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Fuzzy Logic
Reply #1 Thursday, December 26, 2002 5:20 AM
WHERE DID FUZZY LOGIC COME FROM?

The concept of Fuzzy Logic (FL) was conceived by Lotfi Zadeh, a professor at the University of California at Berkley, and presented not as a control methodology, but as a way of processing data by allowing partial set membership rather than crisp set membership or non-membership. This approach to set theory was not applied to control systems until the 70's due to insufficient small-computer capability prior to that time. Professor Zadeh reasoned that people do not require precise, numerical information input, and yet they are capable of highly adaptive control. If feedback controllers could be programmed to accept noisy, imprecise input, they would be much more effective and perhaps easier to implement. Unfortunately, U.S. manufacturers have not been so quick to embrace this technology while the Europeans and Japanese have been aggressively building real products around it.

WHAT IS FUZZY LOGIC?

In this context, FL is a problem-solving control system methodology that lends itself to implementation in systems ranging from simple, small, embedded micro-controllers to large, networked, multi-channel PC or workstation-based data acquisition and control systems. It can be implemented in hardware, software, or a combination of both. FL provides a simple way to arrive at a definite conclusion based upon vague, ambiguous, imprecise, noisy, or missing input information. FL's approach to control problems mimics how a person would make decisions, only much faster.

HOW IS FL DIFFERENT FROM CONVENTIONAL CONTROL METHODS?

FL incorporates a simple, rule-based IF X AND Y THEN Z approach to a solving control problem rather than attempting to model a system mathematically. The FL model is empirically-based, relying on an operator's experience rather than their technical understanding of the system. For example, rather than dealing with temperature control in terms such as "SP =500F", "T <1000F", or "210C
HOW DOES FL WORK?

FL requires some numerical parameters in order to operate such as what is considered significant error and significant rate-of-change-of-error, but exact values of these numbers are usually not critical unless very responsive performance is required in which case empirical tuning would determine them. For example, a simple temperature control system could use a single temperature feedback sensor whose data is subtracted from the command signal to compute "error" and then time-differentiated to yield the error slope or rate-of-change-of-error, hereafter called "error-dot". Error might have units of degs F and a small error considered to be 2F while a large error is 5F. The "error-dot" might then have units of degs/min with a small error-dot being 5F/min and a large one being 15F/min. These values don't have to be symmetrical and can be "tweaked" once the system is operating in order to optimize performance. Generally, FL is so forgiving that the system will probably work the first time without any tweaking.

SUMMARY

FL was conceived as a better method for sorting and handling data but has proven to be a excellent choice for many control system applications since it mimics human control logic. It can be built into anything from small, hand-held products to large computerized process control systems. It uses an imprecise but very descriptive language to deal with input data more like a human operator. It is very robust and forgiving of operator and data input and often works when first implemented with little or no tuning.

In practise FL is all about how much chocolate you can eat in a day

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Jafo
Reply #2 Thursday, December 26, 2002 5:43 AM
I woke up one day and found it tattooed on my shoulder...
Snowman
Reply #3 Thursday, December 26, 2002 6:48 AM
I got me nick from the bestest movie ever made: Smokey and The Bandit
Cyberjack
Reply #4 Thursday, December 26, 2002 7:11 AM
In 1997 I start making 3d models and graphics, inspired from the movies "Cyberjack" & "Bladerunner".
Building weird spaceship inspired by the local traincompany

Therefore I choose "Cyberjack" ...

CJ
Lecrayon
Reply #5 Thursday, December 26, 2002 7:34 AM
Anyone that knows Dutch and French and looks at my name in the profile will understand. Other than that ecrayo is in my name

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Klatuu Berada
Reply #6 Thursday, December 26, 2002 7:51 AM
Mine comes from the classic Sci-Fi movie "The Day The Earth Stood Still" Patricia Neal had to give the orders "Klaatu Berada Nichto" to the robot Gort, telling him not to destroy the Earth. Sometimes I wonder if she should have said "Klaatu Berada YESto"
ToeJo
Reply #7 Thursday, December 26, 2002 10:06 AM
Simple...My name is TOdd JOnes...Hence...ToeJo! The "E" is there so you know how to pronounce it. It was given to me by a friend I used to work with at a car dealership. It stuck and now everyone in this rinky dink town calls me ToeJo.

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werewolf
Reply #8 Thursday, December 26, 2002 10:50 AM
It was a dark night on the moors, I had a little too much to drink and went wandering in to, uhhh, relieve myself. Suddenly there was a soul piercing howl...a rustle in the bushes...a large shaped jumped out at me, clawing...biting...tickling.....................

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Fuzzy Logic
Reply #9 Thursday, December 26, 2002 11:11 AM
Ah, so that's how you met feline..

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werewolf
Reply #10 Thursday, December 26, 2002 12:44 PM


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citats
Reply #11 Thursday, December 26, 2002 1:01 PM
Anyone here old enough to remember Citizen Band radios... better know as CB's? Well when I was about 5 years old everyone in my family was talking on the CB's. Me being the youngest I wanted to take part as well... only problem was I would speak to close to the mic and too loudly! So no one could understand what I was saying... My mother dubbed my handle "static" but I prefere "§tatic"

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WOM
Reply #12 Thursday, December 26, 2002 1:06 PM
Well Static, I still have one in my truck. Doesn't get much use. By the way, don't know how to make that funny symbol.

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craeonics
Reply #13 Thursday, December 26, 2002 5:49 PM
't Was supposed to be the name of my site, but it stuck with me. Other than that, what Fuzz said.
citats
Reply #14 Thursday, December 26, 2002 5:54 PM
Sir WOM hold down "Alt" then on your numeric keypad press 789 then release the "Alt" key = §

I still find the CB useful on the highway, listening to the chatter or Truckers and finding out where those speed traps are... mostly Tow truck drivers have that info...

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Jafo
Reply #15 Thursday, December 26, 2002 6:18 PM
A cab-over Pete with a reefer on and a Kenworth hauling loags....

My callsign was 'Superskate' [had a sportscar]...
WOM
Reply #16 Thursday, December 26, 2002 6:41 PM
§tatic, Thanks. I hate spelling a persons name wrong.

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WOM
Reply #17 Thursday, December 26, 2002 6:43 PM
§tatic, I listen to the CB when I'am on the hwy to avoid the pile ups and cops.

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Transmutate
Reply #18 Thursday, December 26, 2002 8:15 PM
transmutate comes from Charles Darwin's first theory of evolution.....transmutation.
Mike Daniel
Reply #19 Thursday, December 26, 2002 8:38 PM
Grew up in the 70's... Besides, look around at the politics, fashion, fads, or just the daily news in general... nothing really makes a whole lotta sense anymore.
JamMeister33
Reply #20 Thursday, December 26, 2002 9:49 PM
"I been Dazed and Confused for so long it ain't true....
Wanted a woman, never bargained for you,
Lots of people talking, few of them know...
Soul of a woman was created below....."

Led Zeppelin

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