Fuzzy Logic

Now I know what fuzzy logic is! The short version: Say you want to design a linear controller for a non-linear system. One thing you could do is to break the system up into different regions, and use a different linear controller for each region. You want to know what to do? Check which region you're in and use the appropriate controller. Fuzzy logic comes into play when you can't really say what region you're in. For example, what do you do when you're inbetween the "hot" and "cold" regions? One way to use fuzzy logic is to run both controllers and average their outputs based on how "hot" and "cold" you are.

So, it seems that fuzzy logic is simply a way to use the linear control systems that we understand so well to control non-linear systems. Nothing to see here, folks, move along, move along.


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