From: patrika@comcast.net   
      
   Hi,   
      
   I do agree that there seems to be a lack of content.  And I would love   
   to learn/do fuzzy logic type projects.  I just do not know how to begin   
   (plus I probably need to learn a little more about them).   
      
   I have been thinking that fuzzy logic might be good to use on an   
   embedded system that uses automatic gain control (AGC).  The current way   
   that our products run is to compare a value and use a look up table to   
   get a pre-programmed value to use for the AGC.  While this is a decent   
   method, it means that each product is basically customized.  I was   
   thinking that fuzzy logic could be used to better control the AGC and   
   hopefully reduce the customization and time required to do this by a   
   professional.   
      
   Any thoughts, ideas, suggestions for getting started would be   
   appreciated.  (Sorry if this is probably not what you want to see.)   
      
   Basically, there is a DAC, either an 8 or 12-bit, that reads the level   
   of the gain.  If the value falls into our window then nothing needs to   
   be done.  If it goes positive or negative then we either add or subtract   
   attenuation.  Now, if the signal gets too strong too fast then it will   
   trigger an interrupt that will cause the AGC to react much faster.  This   
   is just a quick overview.  Some other notes perhaps worth mentioning is   
   that we use a custom kernel developed in house.  We usually have to work   
   with a small amount of RAM, small flash parts and use as little power as   
   possible.   
      
   Hope to hear form you.   
   Patrick   
      
   EarlCox wrote:   
   > The fuzzy news group suffers from a unique and chronic illness – a lack of   
   > context in which to discuss fuzzy logic. Threads ramble on and on and on   
   > about the meaning of fuzziness, the nature of fuzzy subsets, the ways in   
   > which possibility, necessity, and probability are reflected in the mechanics   
   > of logical expressions BUT no one is discussing problems with the actual use   
   > of fuzzy logic in real world applications. No one is asking questions like,   
   >   
   > I am trying to represent portfolio concentration levels according to   
   > investor suitability and safety constraints but how do I use elastic fuzzy   
   > overlaps to…   
   >   
   > What is the best way to defuzzify a time varying fuzzy set so that   
   > seasonality is maintained in….   
   >   
   > I have a fuzzy SQL system, is there a way to rank the compatibility index   
   > numbers so that ...   
   >   
   > I have a genetic project configuration and scheduling system. I would like   
   > to use fuzzy objective functions and fuzzy constrains to….   
   >   
   > Application base questions are fairly common on the genetic and neural   
   > network news groups. They almost NEVER appear in this news group. Besides   
   > someone like myself, isn’t anyone doing any real world fuzzy systems for   
   > real paying customers??? The only way to really explain how fuzzy reasoning   
   > works to those who are seeking to appreciate its capabilities is to give   
   > them examples from our real-life projects. If no one is actually building   
   > fuzzy systems, if everyone is just doing thesis work or farming out projects   
   > to a cadre of grad students, then we might as well close down this news   
   > group.   
   >   
   > Come to think of it, for all intents and purposes, it is closed down.   
   >   
   > Anyway, just a bit of frustration.   
   >   
   > I’ll go away now.   
   >   
   > Earl   
   > --   
   >   
   >   
   > E a r l  C o x   
   > Founder and President   
   > Scianta Intelligence, LLC   
   > Turn Knowledge Into Intelligence   
   > w w w dot scianta dot com   
   >   
   > 1289 N. Fordham Blvd. Suite 312   
   > Chapel Hill, NC 27514   
   >   
   > (AUTHOR:   
   > "The Fuzzy Systems Handbook" (1994)   
   > "Fuzzy Logic for Business and Industry" (1995)   
   > "Beyond Humanity: CyberEvolution and Future Minds"   
   > (1996, with Greg Paul, Paleontologist/Artist)   
   > "The Fuzzy Systems Handbook, 2nd Ed." (1998)   
   > "Fuzzy Modeling and Genetic Algorithms   
   >      for Data Mining and Exploration" (2005)   
   >   
   >   
      
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