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Granular computing in the development of fuzzy controllers

✍ Scribed by Witold Pedrycz; George Vukovich

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
535 KB
Volume
14
Category
Article
ISSN
0884-8173

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✦ Synopsis

This study elaborates on the role of information granularity in the development of fuzzy controllers. As opposed to numeric data being commonly accepted by fuzzy controllers, we discuss a general processing framework involving data-information granules exhibiting various levels of information granularity. The paper analyzes an impact of information granularity on the performance of the controller. We study a way in which information granules arise in control problems, elaborate on a way of describing these granules as well as provide a way of quantifying the level of information granularity. A number of analysis and design issues are studied including robustness of the fuzzy controller, representation of linguistic information and quantification of its granularity. Nonlinear characteristics of the compiled version of the fuzzy controller operating in presence of granular information are discussed in detail. Illustrative numerical examples are provided as well.

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