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Advantages of fuzzy logic:

· Uses linguistic variables

· Allows imprecise/contradictory inputs

· Permits fuzzy thresholds

· Reconciles conflicting objectives

· Rule base or fuzzy sets easily modified

· Relates input to output in linguistic terms, easily understood

· Allows for rapid prototyping because the system designer doesn't need to know everything about the system before starting

· Cheaper because they are easier to design

· Increased robustness

· Simplify knowledge acquisition and representation

· A few rules encompass great complexity

· Can achieve less overshoot and oscillation

· Can achieve steady state in a shorter time interval (Rao, 1995)

(http://www.scribd.com/doc/37483809/19/Disadvantages-of-Fuzzy-Logic-Controllers)

Limitations?

· Hard to develop a model from a fuzzy system

· Require more fine tuning and simulation before operational

· Have a stigma associated with the word fuzzy (at least in the Western world); engineers and most other people are used to crispness and shy away from fuzzy control and fuzzy decision making (http://www.scribd.com/doc/37483809/19/Disadvantages-of-Fuzzy-Logic-Controllers)

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Q: What are the advantages and disadvantages of fuzzy expert system?
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