• Title/Summary/Keyword: Nonsingleton Fuzzy Logic System

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Uncertain Rule-based Fuzzy Technique: Nonsingleton Fuzzy Logic System for Corrupted Time Series Analysis

  • Kim, Dongwon;Park, Gwi-Tae
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.4 no.3
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    • pp.361-365
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    • 2004
  • In this paper, we present the modeling of time series data which are corrupted by noise via nonsingleton fuzzy logic system. Nonsingleton fuzzy logic system (NFLS) is useful in cases where the available data are corrupted by noise. NFLS is a fuzzy system whose inputs are modeled as fuzzy number. The abilities of NFLS to approximate arbitrary functions, and to effectively deal with noise and uncertainty, are used to analyze corrupted time series data. In the simulation results, we compare the results of the NFLS approach with the results of using only a traditional fuzzy logic system.

Robust design using fuzzy system

  • Ahn, Taechon;Lee, Sangyoun;Ryu, Younbum;Oh, Sungkwun
    • 제어로봇시스템학회:학술대회논문집
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    • 1996.10a
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    • pp.40-43
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    • 1996
  • To design high quality products at low cost is one of very important task for engineers Design optimization for performances can be one solution in this task. This is robust design which has been proved effectively in many field of engineering design. In this paper, the concept of robust design is introduced and combined to fuzzy optimization and nonsingleton fuzzy logic system. The optimum parameter set points were obtained by the fuzzy optimization method and nonsingleton fuzzy logic system. These methods are applied to a filter circuit, a part of the audio circuit of mobile radio transceiver. The results are compared each other.

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Robust Design using Nonsingleton Fuzzy Logic System (Nonsingleton 퍼지 논리 시스템을 이용한 강인 시스템의 설계)

  • Ryu, Youn-Bum;Ahn, Tae-Chon
    • Proceedings of the KIEE Conference
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    • 1998.11b
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    • pp.493-495
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    • 1998
  • Robust design is one method to make manufacturing less sensitive to manufacturing process. Also it is cost effective technique to improve the quality process. This method uses statistically planned experiments to vary settings of important process control parameters. In this paper we apply fuzzy optimization and fuzzy logic system to robust design concept. First a method which uses fuzzy optimization in obtaining optimum settings by measured data from experiments will be presented. Second, fuzzy logic system is made to reduce experiments using experiments results consisted with key control parameter combinations. Then optimum parameter set points are obtained by the descrebed first fuzzy optimization method after prediction the results of each parameter combinations considering each control parameter variations by nonsingleton fuzzy logic system concept.

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Fused Fuzzy Logic System for Corrupted Time Series Data Analysis (훼손된 시계열 데이터 분석을 위한 퍼지 시스템 융합 연구)

  • Kim, Dong Won
    • Journal of Internet of Things and Convergence
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    • v.4 no.1
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    • pp.1-5
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    • 2018
  • This paper is concerned with the modeling and identification of time series data corrupted by noise. As modeling techniques, nonsingleton fuzzy logic system (NFLS) is employed for the modeling of corrupted time series. Main characteristic of the NFLS is a fuzzy system whose inputs are modeled as fuzzy number. So the NFLS is especially useful in cases where the available training data or the input data to the fuzzy logic system are corrupted by noise. Simulation results of the Mackey-Glass time series data will be demonstrated to show the performance of the modeling methods. As a result, NFLS does a much better job of modeling noisy time series data than does a traditional Mamdani FLS.