A Reminder on Fuzzy Logic

  • Dimiter Driankov
Part of the Studies in Fuzziness and Soft Computing book series (STUDFUZZ, volume 61)


Fuzzy logic was primarily designed to represent and reason with knowledge expressed in a linguistic or verbal form. However, when using a languageoriented approach for representing knowledge about a certain system of interest, one is bound to encounter a number of non-trivial problems. Suppose, for example [10], that you are asked how strongly you agree that a given distance, [0m, 40m] which an indoor robot has to travel is a large distance. One way to answer this question is to say that if x ≥ d then you agree it is a large distance and if x < d then you disagree. Thus, if you place a mark on an agree-disagree scale, it might be distributed uniformly over the right half of the scale whenever x ≥ d and uniformly over the left half if x < d.


Membership Function Fuzzy Logic Fuzzy Rule Fuzzy Controller Linguistic Variable 
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© Springer-Verlag Berlin Heidelberg 2001

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  • Dimiter Driankov

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