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Fuzzy Systems, IEEE Transactions on

Issue 4 • Date Aug 2002

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Displaying Results 1 - 13 of 13
  • Fuzzy logic-based optimization for redundant manipulators

    Publication Year: 2002, Page(s):498 - 509
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (433 KB) | HTML iconHTML

    Redundant manipulators have more degrees of freedom (DOF) than the DOF of the task space. This implies that the number of joint position variables is greater than the number of variables specifying the task. The problem of solving the kinematic equations for the joint variables is underspecified unless additional equations/constraints are introduced to obtain a well-posed problem. A dynamic level ... View full abstract»

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  • Fuzzy job-shop scheduling based on ranking level (λ, 1) interval-valued fuzzy numbers

    Publication Year: 2002, Page(s):510 - 522
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (517 KB) | HTML iconHTML

    Job-shop scheduling is a difficult problem, both theoretically and practically. The theoretical problems stem from the search for optimal schedules subject to a limited number of constraints, while the complexity of practical problems is due to the number and variety of constraints that are not rigid in the actual situations. Indeed, in real world descriptions there are many vaguely formulated rel... View full abstract»

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  • Application of fuzzy logic in resistive fault modeling and simulation

    Publication Year: 2002, Page(s):461 - 472
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (373 KB) | HTML iconHTML

    Real defects (e.g., resistive stuck at or bridging faults) in very large-scale integration (VLSI) circuits cause intermediate voltages which cannot be modeled as ideal shorts. In this paper, we first show that the traditional zero-resistance model is not sufficient for fault simulation. Then, we present a resistive fault model for real defects and use fuzzy logic techniques for fault simulation an... View full abstract»

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  • Current-mode A/D fuzzy converter

    Publication Year: 2002, Page(s):533 - 540
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (290 KB) | HTML iconHTML

    This paper presents a general architecture for an analog-to-digital (A/D) fuzzy converter which performs the A/D conversion and the fuzzification operation on the same functional block, through a programmable membership function. The solution uses as main blocks an A/D converter, a comparator, and some logic inverters and switches. It is characterized by good flexibility and programmability and, c... View full abstract»

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  • Fuzzy model reference adaptive control

    Publication Year: 2002, Page(s):436 - 444
    Cited by:  Papers (44)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (370 KB) | HTML iconHTML

    This paper investigates a fuzzy model reference adaptive controller (FMRAC) for continuous-time multiple-input-multiple-output (MIMO) nonlinear systems. The proposed adaptive scheme uses a Takagi-Seguno (TS) fuzzy adaptive system, which allows for the inclusion of a priori information in terms of qualitative knowledge about the plant operating points or analytical regulators (e.g., state feedback)... View full abstract»

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  • From approximative to descriptive fuzzy classifiers

    Publication Year: 2002, Page(s):484 - 497
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (394 KB) | HTML iconHTML

    This paper presents an effective and efficient approach for translating fuzzy classification rules that use approximative sets to rules that use descriptive sets and linguistic hedges of predefined meaning. It works by first generating rules that use approximative sets from training data, and then translating the resulting approximative rules into descriptive ones. Hedges that are useful for suppo... View full abstract»

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  • Fuzzy logic-based matching pursuits for lossless predictive coding of still images

    Publication Year: 2002, Page(s):473 - 483
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (425 KB) | HTML iconHTML

    This paper presents an application of fuzzy-logic techniques to the reversible compression of grayscale images. With reference to a spatial differential pulse code modulation (DPCM) scheme, prediction may be accomplished in a space-varying fashion either as adaptive, i.e., with predictors recalculated at each pixel, or as classified, in which image blocks or pixels are labeled in a number of class... View full abstract»

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  • An accelerated approach for solving fuzzy relation equations with a linear objective function

    Publication Year: 2002, Page(s):552 - 558
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (405 KB) | HTML iconHTML

    In literature, the optimization model with a linear objective function subject to fuzzy relation equations has been converted into a 0-1 integer programming problem by Fang and Li (1999). They proposed a jump-tracking branch-and-bound method to solve this 0-1 integer programming problem. In this paper, we propose an upper bound for the optimal objective value. Based on this upper bound and rearran... View full abstract»

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  • Fuzzy models of language structures

    Publication Year: 2002, Page(s):421 - 435
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (571 KB) | HTML iconHTML

    Statistical distribution of language structures reflect important regularities controlling informational and psycho-physiological processes, which accompany the generation of verbal language or printed texts. In this paper, fuzzy quantitative models of language statistics are constructed. The suggested models are based on the assumption about a super-position of two kinds of uncertainties: probabi... View full abstract»

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  • Parallelization of a fuzzy control algorithm using quantum computation

    Publication Year: 2002, Page(s):451 - 460
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (341 KB) | HTML iconHTML

    Quantum computation is proposed for the parallelization of a fuzzy logic control (FLC) algorithm. Quantum computation speeds up the fuzzy inference since serial operations between matrices of large dimensionality are now replaced by a one-step quantum addition or a quantum subtraction. The unitarity properties of the algorithm prove that the FLC stands for a simulator of a quantum computing machin... View full abstract»

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  • Algorithms for the computation of T-transitive closures

    Publication Year: 2002, Page(s):541 - 551
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB) | HTML iconHTML

    We present two weight-driven algorithms for the computation of the T-transitive closure of a symmetric binary fuzzy relation on a finite universe X with cardinality n (or, equivalently, of a symmetric (n×n)-matrix with elements in [0, 1]), with T a triangular norm. The first algorithm is proven to be valid for any triangular norm T, whereas the second algorithm is shown to be valid when T is... View full abstract»

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  • Expected value of fuzzy variable and fuzzy expected value models

    Publication Year: 2002, Page(s):445 - 450
    Cited by:  Papers (430)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (271 KB) | HTML iconHTML

    This paper will present a novel concept of expected values of fuzzy variables, which is essentially a type of Choquet integral and coincides with that of random variables. In order to calculate the expected value of general fuzzy variable, a fuzzy simulation technique is also designed. Finally, we construct a spectrum of fuzzy expected value models, and integrate fuzzy simulation, neural network, ... View full abstract»

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  • The SOF-PID controller for the control of a MIMO robot arm

    Publication Year: 2002, Page(s):523 - 532
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (346 KB) | HTML iconHTML

    The application of a self-organizing fuzzy proportional-integral-derivative (SOF-PID) controller to a multiple-input-multiple-output (MIMO) nonlinear revolute-joint robot arm is studied in this paper. The SOF controller is a learning supervisory controller, making small changes to the values of the PID gains while the system is in operation. In effect, the SOF controller replaces an experienced hu... View full abstract»

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Aims & Scope

The IEEE Transactions on Fuzzy Systems (TFS) is published bimonthly. TFS will consider papers that deal with the theory, design or an application of fuzzy systems ranging from hardware to software.

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Meet Our Editors

Editor-in-Chief
Chin-Teng Lin
National Chiao-Tung University
Hsinchu 30010, Taiwan 
ctlin@mail.nctu.edu.tw
Phone: 886-3-5731753
Fax: 886-3-5727382