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Soft Computing Methods in Industrial Applications, 1999. SMCia/99. Proceedings of the 1999 IEEE Midnight-Sun Workshop on

Date 18-18 June 1999

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  • SMCia/99 Proceedings of the 1999 IEEE Midnight - Sun Workshop on Soft Computing Methods in Industrial Applications (Cat. No.99EX269)

    Publication Year: 1999
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    Freely Available from IEEE
  • Author index

    Publication Year: 1999, Page(s): xii
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    Freely Available from IEEE
  • Discussion of reliability criterion for US dollar classification by LVQ

    Publication Year: 1999, Page(s):28 - 33
    Cited by:  Papers (1)
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    Freely Available from IEEE
  • Adaptive and intelligent systems applications

    Publication Year: 1999, Page(s): 156
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (108 KB)

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  • Fuzzy logic two-phase traffic signal control for coordinated one-way streets

    Publication Year: 1999, Page(s):69 - 74
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    The specific goal of this study was to compare the differences in various traffic signal control algorithms when simulating two consequent one-way intersections with no turning traffic. The opportunities offered by fuzzy logic for controlling traffic are the subject of our FUSICO (FUzzy logic SIgnal group COntrol) research project. The compared algorithms used in the simulations were coordinated f... View full abstract»

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  • Adaptive notch filtering in impulsive noise environment

    Publication Year: 1999, Page(s):152 - 155
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    An adaptive digital notch filter is considered for 50/60 Hz line frequency signal processing. An adaptive algorithm allows tracking of the main frequency component such that the notch frequency is the only changing parameter. Since the power line frequency is known to within a narrow tolerance band, it is possible to apply soft or hard limiting on the notch frequency. Soft and hard limiting are co... View full abstract»

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  • Bayesian neural networks for industrial applications

    Publication Year: 1999, Page(s):63 - 68
    Cited by:  Papers (7)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    Demonstrates the advantages of using Bayesian neural networks in regression, inverse and classification problems, which are common in industrial applications. The Bayesian approach provides a consistent way to perform inference by combining the evidence from data with prior knowledge from the problem. A practical problem with neural networks is to select the correct complexity for the model, i.e. ... View full abstract»

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  • Friction compensation in servo motor systems using neural networks

    Publication Year: 1999, Page(s):146 - 151
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    Compensation of negative effects caused by friction in high precision servo control systems is an important and challenging problem. Conventional compensation methods often rely on an explicit friction model, which is difficult to acquire accurately in practice. We propose a neural network-based compensation scheme to cope with this problem. The visible disturbance resulting from friction is first... View full abstract»

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  • Genetic algorithms for tuning PLC loops

    Publication Year: 1999, Page(s):58 - 62
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    A common practice is to design a controller by plant observations (i.e. experiments) and to optimize some of its parameters by trial-and-error. This paper proposes a genetic algorithm for the automation of the search procedure and its implementation on a programmable logic controller (PLC). The details of this implementation are discussed, along with an example one carried out for the control of a... View full abstract»

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  • Condition monitoring of storage batteries in telecom power systems-crisp vs. soft computing methodology

    Publication Year: 1999, Page(s):97 - 102
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    The storage battery is the most important and decisive component in a telecom DC UPS system, determining its reliability and availability performance. The deployment of valve-regulated lead-acid (VRLA) batteries into telecom networks started an era of unbelievable problems and gradual deterioration of credibility. Battery condition monitoring has become a necessity, and not just a way to boost rel... View full abstract»

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  • Qualitative phase space modeling of non-linear electrical dynamic systems

    Publication Year: 1999, Page(s):140 - 145
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    The purpose of this paper is to combine the existing methodologies that describe non-linear dynamic systems, by using the phase space and the descriptions of qualitative behaviors of ordinary differential equations. The swing equation of a synchronous machine has been illustrated as an example View full abstract»

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  • The combination and prospects of neural networks, fuzzy logic and genetic algorithms

    Publication Year: 1999, Page(s):52 - 57
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    Today, there's a synergy beginning to form among neural nets (NNs), fuzzy logic (FL) and genetic algorithms (GAs). This paper reviews developments in this respect. Many designs of knowledge-based and associated learning systems using the combination of NNs and FL abilities have been presented. Some methods for the integration of GAs with fuzzy systems are described. Afterwards, work on hybrid syst... View full abstract»

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  • General framework for neural network based real-time voltage stability assessment of electric power system

    Publication Year: 1999, Page(s):91 - 96
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    The need for real-time security assessment of electric power systems has increased due to open systems, an increase in the number of power wheeling transactions and environmental concerns. In this paper, special attention is focused on neural network generalisation in large-scale system modelling. Generalisation has been improved by operation points classification and a reduction of the number of ... View full abstract»

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  • Adaptive critic control of the power train in a hybrid electric vehicle

    Publication Year: 1999
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (48 KB)

    Summary form only given. An adaptive critic control algorithm is used to control the flow of electric power in the power train of a hybrid electric vehicle. This system consists of a fuel cell which serves as the primary power source, a flywheel/battery to recover regenerative power and provide power for acceleration, and separate motor/generators on each wheel; connected by an inverter which cont... View full abstract»

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  • Introduction of soft computing techniques to welfare devices

    Publication Year: 1999, Page(s):116 - 121
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    This paper introduces our research into the use of soft computing techniques for hearing impairment compensation and physical rehabilitation. Evolutionary computation (EC) is used for fitting hearing aids based on an interactive EC and the user's preferences for sound. This technology allows hearing aid users to optimize their hearing aids in any acoustic environment without professional assistanc... View full abstract»

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  • Holonic control

    Publication Year: 1999, Page(s):128 - 133
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    A concept of holonic control is introduced. There are many complex systems which need to be controlled intelligently. We have tried to understand the target system to be controlled clearly, accurately, and precisely. After obtaining this information, systems can be controlled, but this method can result in more complex problems, more time consuming because of the size of a system, and comparativel... View full abstract»

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  • Data driven logic: a programming method using data flow diagrams

    Publication Year: 1999, Page(s):46 - 51
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    A large database of connections between software parts replaces procedural programs to realize a virtually-wired (visual) logic and to eliminate the regular work of programming. Having a knowledge database within a drawing environment allows programmers to easily select program parts using a mouse on the screen. This paper presents the system concept from the viewpoint of soft computing, as well a... View full abstract»

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  • Neural networks for energy flows prediction in facility systems

    Publication Year: 1999, Page(s):86 - 90
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    A procedure for the short-term prediction of the thermal energy consumption of a hospital is shown in this paper. First, linear ARX models are built in order to obtain information on the influence of the input variables on the output of the system. Therefore, nonlinear models based on feedforward neural networks (NNARX) are built using the information provided by the linear estimate. The results o... View full abstract»

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  • A genetic algorithm approach to solve channel assignment problem in cellular radio networks

    Publication Year: 1999, Page(s):34 - 39
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    We propose an efficient algorithm for channel assignment problem in cellular radio networks. The task is to assign channels to different cells in a spectrum-efficient way i.e. the minimum frequency band is used and at the same time interference among calls from different cells is avoided. The simplest version of this problem, where only co-channel interference is considered, is NP-complete. We pro... View full abstract»

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  • Furnace temperature control with fuzzy microcontroller

    Publication Year: 1999, Page(s):75 - 79
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    A new generation of processor, the so-called fuzzy microprocessor, is used to control the temperature in a laboratory furnace. The system consists of the furnace and a control device with an NLX230 fuzzy microcontroller, an 80C522 microcontroller, a clock, RAM and EPROM memories and an LCD. The fuzzy microcontroller works as coprocessor. It is possible to introduce, in an easy way, the mode requir... View full abstract»

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  • A hidden Markov model-based algorithm for online fault diagnosis with partial and imperfect tests

    Publication Year: 1999, Page(s):103 - 108
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    Presents a hidden Markov model (HMM) based algorithm for online fault diagnosis in complex large-scale systems with partial and imperfect tests. The HMM-based algorithm handles test uncertainties and inaccuracies, finds the best estimate of system states and identifies the dynamic changes in system states, such as from a fault-free state to a faulty one. We also present two methods to estimate the... View full abstract»

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  • Intelligent real-time control of moulding mixture composition in foundries

    Publication Year: 1999, Page(s):110 - 115
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    The implementation of an adaptive knowledge-based system in the foundry industry is presented. The problem of moulding mixture composition was solved because the majority of casting defects are due to inappropriate mould quality. The original learning method and system architecture was designed to ensure simple interaction and maintenance of the knowledge base as well as unambiguous interpretation... View full abstract»

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  • Application of genetic algorithms to airbase logistics planning

    Publication Year: 1999, Page(s):122 - 127
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    There is a need for a modeling approach that integrates simulation with human interaction and optimization to exploit the analyst's ability in addressing difficult to quantify issues while utilizing computer models and algorithms to perform complex computations in systems analysis. In this paper, we present an approach that integrates human interaction with simulations and genetic algorithms for t... View full abstract»

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  • Modeling virtual cities using genetic algorithms

    Publication Year: 1999, Page(s):134 - 139
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    A novel method is described for automatically modeling virtual cities. A city is considered to be composed of several city blocks, and each block has feature values, such as average building height. The feature values are determined using a genetic algorithm. A chromosome represents the building layout of a virtual city and a fitness function is used to measure the similarity between neighboring b... View full abstract»

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  • Soft computing applications in the electric power industry

    Publication Year: 1999, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    This paper focuses on two distinct types of problems; namely, sensor redundancy and set-point control. For the latter problem the workhorse of the industry is the 3-element proportional-integral-derivative (PID) controller which can be tuned to provide reasonable performance over a relatively wide range of operation and control problems. PID controllers can, however, become detuned over time as op... View full abstract»

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