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Intelligent Control/Intelligent Systems and Semiotics, 1999. Proceedings of the 1999 IEEE International Symposium on

Date 17-17 Sept. 1999

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Displaying Results 1 - 25 of 81
  • Proceedings of the 1999 IEEE International Symposium on Intelligent Control Intelligent Systems and Semiotics (Cat. No.99CH37014)

    Publication Year: 1999
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    Freely Available from IEEE
  • Author index

    Publication Year: 1999, Page(s):463 - 464
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    Freely Available from IEEE
  • An analysis of type-1 and type-2 fuzzy logic systems

    Publication Year: 1999, Page(s):353 - 358
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    This document introduces the concept of type-2 fuzzy sets and compares the type-2 fuzzy set preliminaries with the ordinary type-1 fuzzy set. Two theorems are proved: the first one helps to generate the general form of the type-2 operations, the second provides an approach to transfer the type-1 fuzzy uncertainties to the type-2 system View full abstract»

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  • Symbol systems in constructed complex systems

    Publication Year: 1999, Page(s):191 - 197
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    This paper is about a particular technical problem in the study of autonomy in constructed complex systems: how can a computing system decide that it needs a new symbol system to re-express all of its own processes? We have shown earlier that a constructed complex system will need to change its symbol system, by proving two theorems that limit what it can do with a fixed symbol system. To change t... View full abstract»

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  • Contact sensor-based coverage of rectilinear environments

    Publication Year: 1999, Page(s):266 - 271
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB)

    A variety of mobile robot tasks require complete coverage of an initially unknown environment, either as the entire task or as a way to generate a complete map for use during further missions. This is a problem known as sensor-based coverage, in which the robot's sensing is used to plan a path that reaches every point in the environment. A new algorithm, CCR, is presented here which wor... View full abstract»

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  • Two problems in decentralized adaptive control using neural networks

    Publication Year: 1999, Page(s):167 - 172
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    Discusses two problems in the decentralized adaptive control of the outputs of a discrete-time dynamical system using multiple controllers, when each controller has only partial information concerning the overall system. The first problem is one of achieving exact tracking when the controllers communicate to each other their control decisions but not their measured system outputs. The second probl... View full abstract»

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  • A learning control scheme based on neural networks for repeatable robot trajectory tracking

    Publication Year: 1999, Page(s):102 - 107
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    This paper presents an iterative learning controller using neural network (NN) for the robot trajectory tracking control. The basic control configuration is briefly presented and a new weight-tuning algorithm of NN is proposed with a dead-zone technique. Theoretical proof is given which shows that our modified algorithm guarantees the convergence of NN estimation error in the presence of disturban... View full abstract»

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  • Emotions simulation in methodology of autonomous adaptive control

    Publication Year: 1999, Page(s):73 - 78
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    We offer a standpoint that emotions are a necessary mechanism for autonomous control systems. By an autonomous controlled object we understand an object, that is controlled by a control system which is its on-board subsystem. The control system performs learning and control in one process. We develop a methodology of autonomous adaptive control (AAC), that allows us to construct a control system f... View full abstract»

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  • Self-organizing CMAC neural networks and adaptive dynamic control

    Publication Year: 1999, Page(s):259 - 265
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    A self-organizing CMAC neural network mechanism and an CMAC based adaptive control scheme are presented. Two main efforts have been made in this study. One is on the self-organizing mechanism of CMAC neural network. The CMAC basis functions with a stair-waveform are introduced. A data clustering technique is used in reducing the memory size significantly and a structural adaptation technique is de... View full abstract»

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  • Multi-resolution techniques in the rules-based intelligent control systems: a universal approximation result

    Publication Year: 1999, Page(s):213 - 218
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    One of the main problems of fuzzy control is that the number of rules which are necessary to represent a given control strategy with a given accuracy, grows exponentially with the increase in accuracy. As a result, for reasonable accuracy and a reasonable number of input variables, a great number of rules is sometimes needed. In this paper, we start to solve this problem by pointing out that tradi... View full abstract»

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  • ICa: middleware for intelligent control

    Publication Year: 1999, Page(s):387 - 392
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    The effective development of intelligent process controllers of high complexity relies deeply on integration issues. CORBA technology offers a good infrastructure for complex controller integration and deployment. Integrability of heterogeneous technologies (like neural networks or expert systems), distributed nature of large plant controllers, modularized designs or construction and deployment ar... View full abstract»

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  • Intelligent spacecraft control using multiple models, switching, and tuning

    Publication Year: 1999, Page(s):84 - 89
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    In this paper an efficient scheme for failure detection and identification and adaptive reconfigurable control is proposed for spacecraft control in the presence of actuator failures, control input saturation, and large external disturbances. The resulting intelligent controller increases the spacecraft autonomy substantially. The scheme is based on the general methodology of multiple models, swit... View full abstract»

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  • Multi-resolution methods in non-destructive testing of aerospace structures and in medicine

    Publication Year: 1999, Page(s):207 - 212
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    Thorough testing of a huge aerospace structures results in a large amount of data, and long processing time. To decrease the processing time, we use a “multi-resolution” technique, in which we first separate the data into data corresponding to different vibration modes, and then combine these data together. We show how a general methodology for choosing the optimal uncertainty represen... View full abstract»

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  • Interpolation behavior of TS fuzzy controllers

    Publication Year: 1999, Page(s):359 - 364
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    In this paper the influence of the shape, the distribution of the membership functions and the order of the functional consequent (in case of Takagi-Sugeno controller, 1985) on the interpolation function of the fuzzy system is investigated. A linear membership function, product conjunction operator, and a general functional consequent are used. Different interpolation behavior can be observed by c... View full abstract»

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  • A neural network based vision system for 3D motion estimations

    Publication Year: 1999, Page(s):248 - 253
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    An active vision approach is proposed for 3D object motion estimation. The motion estimation problem is formulated as the problem of planning the poses of a moving vision system so as to minimize the estimation uncertainties. A Kalman filter is employed to estimate the object motion parameters. The Riccati equation of the filter is developed as a function of the vision system control parameters, n... View full abstract»

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  • Adaptive control of uncertain Chua's circuits

    Publication Year: 1999, Page(s):126 - 131
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    In this paper, the adaptive backstepping with tuning functions method is used for the control of uncertain Chua's circuits with all the key parameters unknown. First, we show that several Chua's circuits of different types including Chua's oscillator, Chua's circuit with cubic nonlinearity, and Murali-Lakshmanan-Chua circuit, can all be transformed into a class of nonlinear systems in the so-calle... View full abstract»

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  • Stability analysis of switched systems with impulse effects

    Publication Year: 1999, Page(s):79 - 83
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    Stability of switched systems with impulse effects is considered. Using the concepts of minimum holding time and redundancy, we establish sufficient conditions for stability, asymptotic stability, and exponential stability in the sense of Lyapunov. The presented results are more practical than the existing stability analyses that introduce multiple Lyapunov functions View full abstract»

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  • Designing the dynamic decision support systems of a semiotic type

    Publication Year: 1999, Page(s):296 - 301
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Describes designing the dynamic decision support systems (DDSSs) of a semiotic type. A DDSS of such a type is oriented towards open and dynamic problem domains and it is defined by a set of various models. The example of a DDSS prototype for monitoring and management of a nuclear power block, implemented on the basis of the tools G2+GDA, is given View full abstract»

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  • Underground pipe cracks classification using image analysis and neuro-fuzzy algorithm

    Publication Year: 1999, Page(s):399 - 404
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    Pipeline surface defects such as cracks cause major problems for asset managers, particularly when the pipe is buried under the ground. The manual inspection of surface defects in the underground pipes has a number of drawbacks, including subjectivity, varying standards, and high costs. Automatic inspection systems using image processing and artificial intelligence techniques can overcome many of ... View full abstract»

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  • Comparison of relational methods and attribute-based methods for data mining in intelligent systems

    Publication Year: 1999, Page(s):162 - 166
    Cited by:  Papers (1)  |  Patents (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    Most of the data mining methods in real-world intelligent systems are attribute-based machine learning methods such as neural networks, nearest neighbors and decision trees. They are relatively simple, efficient, and can handle noisy data. However, these methods have two strong limitations: (1) a limited form of expressing the background knowledge and (2) the lack of relations other than “ob... View full abstract»

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  • New matrix formulation for supervisory controller design in practical flexible manufacturing system

    Publication Year: 1999, Page(s):144 - 149
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    The paper deals with a new matrix formulation of a supervisory controller design in practical flexible manufacturing system (FMS). Design method is applied to the laboratory setup of a finite-buffer multiple re-entrant flow line FMS. Control of the FMS is based on a matrix model approach which significantly reduces the computational effort. The results obtained during experiments have confirmed th... View full abstract»

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  • Knowledge-based supervision and diagnosis of complex process

    Publication Year: 1999, Page(s):225 - 230
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    The knowledge about industrial processes concerns the structure and the behaviour as well as the relations between actions and effects. We describe here first the knowledge-based process description approach, leading to building a set of executable instructions. From that a causal graph can be implemented. Simultaneously, a knowledge-based variable analysis methodology is developed so that supervi... View full abstract»

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  • Mechanisms underlying the evolution of robust nonlinear control in biology

    Publication Year: 1999, Page(s):441 - 446
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    A number of papers have highlighted remarkably high levels of robustness in the biochemical processes that control cellular function. This robustness is achieved in spite of the `inexact' and highly stochastic nature of molecular interactions. Averaging, thresholding, resynchronization, and feedback are used extensively in biological systems to achieve robustness. How did incremental evolutionary ... View full abstract»

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  • Emotions, learning and control

    Publication Year: 1999, Page(s):132 - 137
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    There is a popular belief that emotions are mysterious gut feelings, beyond mathematical analysis. This paper counters the popular belief by describing a mathematical technique incorporating emotions into intelligent control systems and establishes relationships between mathematical, psychological and philosophical analyses of emotions. Many control systems incorporate signals that are directly re... View full abstract»

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  • Fault accommodation of a class of nonlinear dynamical systems using a learning approach

    Publication Year: 1999, Page(s):185 - 190
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The paper presents a robust fault diagnosis scheme for detecting and accommodating faults occurring in a class of nonlinear multi-input multi-output dynamical systems. Changes in the system dynamics due to a fault are modeled as nonlinear functions of the control input and state variables. The fault function can model slowly developing (incipient) or abrupt faults, with each component of the fault... View full abstract»

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