An Alternative Type Reduction Approach based on Crisp Interval Operations for Interval Type-2 Fuzzy Sliding Controllers
碩士 === 國立宜蘭大學 === 電機工程學系碩士班 === 100 === In this paper, an alternative type reduction approach based on crisp interval operations is presented to avoid the time-consuming difficulty in the type reduction procedure. Each fuzzy set with an embedded type-1 membership function in the primary membership f...
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2012
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| Online Access: | http://ndltd.ncl.edu.tw/handle/43128331532031082766 |
| Summary: | 碩士 === 國立宜蘭大學 === 電機工程學系碩士班 === 100 === In this paper, an alternative type reduction approach based on crisp interval operations is presented to avoid the time-consuming difficulty in the type reduction procedure. Each fuzzy set with an embedded type-1 membership function in the primary membership function of an interval type-2 fuzzy set is approximated as a crisp interval. These intervals are then combined with crisp interval operations to be one integrated interval which represents an interval type-2 fuzzy set. Then the interval type-2 fuzzy set is type reduced to be a type-1 fuzzy set retrieved from the corresponding integrated interval. The proposed crisp-interval-operation type reduction is also applied to the design of a hybrid interval type-2 fuzzy sliding controller for a double-pendulum-and-cart system. The simulation results are included to show the effectiveness of the designed hybrid interval type-2 fuzzy sliding controllers using the crisp-interval-operation type reduction.
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