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Emerging Technologies and Factory Automation Proceedings, 1997. ETFA '97., 1997 6th International Conference on

Date 9-12 Sept. 1997

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Displaying Results 1 - 25 of 103
  • 1997 IEEE 6th International Conference on Emerging Technologies and Factory Automation Proceedings [front matter]

    Publication Year: 1997, Page(s):i - xxi
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    Freely Available from IEEE
  • 1997 IEEE 6th International Conference on Emerging Technologies and Factory Automation Proceedings, EFTA '97

    Publication Year: 1997
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    Freely Available from IEEE
  • Index to Authors

    Publication Year: 1997, Page(s): 573
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    Freely Available from IEEE
  • Efficient implementations of Banker's algorithm for deadlock avoidance in flexible manufacturing systems

    Publication Year: 1997, Page(s):214 - 220
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (756 KB)

    Manufacturing systems researchers have dismissed Banker's algorithm as being too conservative for deadlock avoidance in contemporary flexibly automated, discrete-part manufacturing systems. In this paper, we provide a modified Banker's logic for the FMS context, and show that the resulting implementations compare favorably in terms of operational flexibility with modern deadlock avoidance policies... View full abstract»

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  • Modeling ethology inspired scenarios for mobile minirobotics using object-oriented Petri-nets

    Publication Year: 1997, Page(s):431 - 435
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    This paper presents an approach of modeling ethology inspired scenarios for cooperative mobile minirobotics. We are particularly interested in recruitment mechanisms of ants colonies. Therefore, we deal with multi-agent systems, where an agent is an autonomous mobile minirobot. The fact of scaling down the size of the robots inspires missions which will capitalise on several and relatively simple ... View full abstract»

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  • A comparison of passivity-based and input-output linearization controllers for induction motors

    Publication Year: 1997, Page(s):60 - 63
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    An experimental and theoretical comparison of passivity-based and input-output linearization controllers for induction motors is presented. The comparison is done taking into account saturation of the magnetic material in the main flux path of the induction motor. Experimental results show that the use of the passivity-based controller results in reduced position tracking errors as compared with t... View full abstract»

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  • Virtual factories: an object-oriented simulation-based framework for real-time FMS control

    Publication Year: 1997, Page(s):208 - 213
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    Increasingly, automation and computer-based control play key roles in the operation of manufacturing systems. These two factors are necessary to support trends towards greater product customization and increased emphasis on reduction of lead times. At the same time, though, automation and computer-based control can be enormously expensive to design and implement in a factory. These high costs moti... View full abstract»

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  • Solving the reachability problem of a class of Petri nets

    Publication Year: 1997, Page(s):258 - 262
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    We present a theorem on the reachability of a class of Petri nets, called process nets with resources (PNRs), which model shared-resource automated manufacturing systems based on the concept of separately specifying operation and resource requirements. It is shown that the reachability of a PNR only depends on whether all minimal siphons are marked. An algorithm is presented to show how the state ... View full abstract»

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  • Intelligent and integrated production control system for manufacturing enterprise

    Publication Year: 1997, Page(s):15 - 18
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    In order to effectively confront increased competition, an enterprise needs a flexible and specific production management system. Recent innovative information and communication technologies are making it possible for an manufacturing enterprise to control the whole of process production, qualities of the human and products, using a database containing data concerning products and production. In t... View full abstract»

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  • An inter-organizational information system design for virtual enterprises

    Publication Year: 1997, Page(s):139 - 142
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    We have used the term “virtual enterprise” in articulating the 21st century global manufacturing enterprise strategy. One of the key requirements is to design an information system (IS) architecture to control the interoperability of the participated organization's distributed, heterogeneous and concurrent systems. This article presents design of an inter-organizational information sys... View full abstract»

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  • Operational policies for the management of critical resources in production facilities

    Publication Year: 1997, Page(s):427 - 430
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Effective bottleneck management is a well-known and widely accepted practice in the operations and production management literature. It recognizes that the throughput of a line is strongly affected by the way operations are managed at the bottleneck. In this paper we review an approach which attempts to minimize the probability of starvation at critical resources. The contribution stands in an ana... View full abstract»

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  • Disassembly/assembly path search reusing solutions

    Publication Year: 1997, Page(s):183 - 188
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    It is important to generate and evaluate disassembly paths in product design stages for reducing the recycling and repairing costs of products. This paper proposes a method for generating the disassembly paths automatically by using CAD data. The method is efficient especially to generate the disassembly paths of the design objects got by modifying the original ones whose disassembly paths have be... View full abstract»

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  • Remote wireless measuring systems

    Publication Year: 1997, Page(s):55 - 59
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    In this paper we presented remote wireless measuring systems. The wireless measuring systems transfer the digital data information among personal computer and single-chip microprocessor peripherals without cables and expensive network operating systems. Personal computer is a remote receiving/monitoring part and single-chip microprocessors are local measuring parts. The system has some advantages:... View full abstract»

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  • Expansion of SFC expression for sequential control systems

    Publication Year: 1997, Page(s):467 - 472
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    Sequential control systems in the case of factory automation (FA) usually consist of programmable controllers (PCs). One of the authors, has been engaged in constructing material handling systems (MHS) for a long time and has been studying how its control design should be for keeping efficiency and for realizing correct control systems. Accordingly, the authors propose here a description method to... View full abstract»

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  • Assembly cell with a robot: how to increase effectiveness?

    Publication Year: 1997, Page(s):201 - 207
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    A new solution to the robotic assembly problem by means of a special pneumo-vortical module gripped by a robot is discussed. The assembling orienting module is successively supplied by necessary parts from vibro-hoppers or magazines, then it orients these parts and assembles them into a final product. The elements of the pneumo-vortical assembly theory and the results of computer-aided design, par... View full abstract»

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  • Analysis of signal/event nets

    Publication Year: 1997, Page(s):253 - 257
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    Net condition/event systems (NCES) have been defined to provide a modular modelling framework for discrete event systems. NCES are based on the interconnection of modules whose dynamic behavior is modeled by means of Petri nets. The interconnection is performed by signals only. The resulting system is no longer an ordinary, classical Petri net. Hence, if we want to analyse those systems by means o... View full abstract»

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  • A framework of virtual design for product customization

    Publication Year: 1997, Page(s):7 - 14
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    One major challenge of mass customization is how to meet two seemingly conflicting goals, namely satisfying individual customers' needs while keeping mass production efficiency. In order to help customers to select the appropriate product family so that the closest variant can be quickly generated and delivered, this paper proposes a virtual design approach by developing virtual prototypes to repr... View full abstract»

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  • On an expert system with multicriteria Tabu search for multiobjective project scheduling

    Publication Year: 1997, Page(s):287 - 291
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    We present a decision support system for multiobjective project scheduling problems under multiple category resource constraints. It handles quite a general class of nonpreemptive scheduling problems with renewable, nonrenewable and doubly-constrained resources, multiple performing modes of activities, precedence constraints in the form of an activity network and multiple project performance crite... View full abstract»

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  • A real-time messaging system for manufacturing environments

    Publication Year: 1997, Page(s):133 - 138
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    Communication systems, which are to be used in real-time distributed systems, must be designed with real-time constraints in mind. Thus, it becomes essential in our opinion, to provide a communication system that can guarantee these constraints. The architecture and the performance of this system are of paramount importance to efficient and reliable operation of integrated real-time environments. ... View full abstract»

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  • A Petri net-based architecture for plant simulation

    Publication Year: 1997, Page(s):397 - 402
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB)

    We propose a hybrid architecture for the simulation of plants. Its core is a Petri net executor based on a new class of Petri nets called extended simple colored Petri nets. The executor is supervised by an expert system. Our architecture is very well-suited for the software-engineering development of plant simulators, as development times and errors can be dramatically reduced. The validity of ou... View full abstract»

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  • An analog-current mode local cluster neural net

    Publication Year: 1997, Page(s):237 - 242
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    The local cluster (LC) artificial neural net is a special kind of multilayer perceptron where the sigmoid functions combine in clusters that have a localised response in input space. The proponents of the LC architecture have shown that it is versatile and trains well. They also suggested that the LC nets could be suitable for realisation in analog VLSI. We investigated the feasibility of an analo... View full abstract»

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  • Artificial vision for automated manufacturing systems in communications industry

    Publication Year: 1997, Page(s):421 - 426
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    The authors have been involved in the implementation of a total quality control project in a communications equipment company, whose products are mounted and tested in a manufacturing plant controlled by an IBM Token Ring LAN. The most significant products are RF and microwave amplifier boards for satellite TV receivers, with electronic components based on SMT technology. The first implementation ... View full abstract»

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  • Dynamic generation of disassembly sequences

    Publication Year: 1997, Page(s):177 - 182
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    Disassembly for material recovery and environment protection is an increasingly important aspect in the manufacturing industry. Most of the present research works for disassembly focus on the generation of predictive optimal sequences. In fact, the disassembly process is particularly uncertain. Frequent incidents make a predetermined plan unrealistic. In this paper we present a new disassembly met... View full abstract»

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  • Data quality and flowshop scheduling results

    Publication Year: 1997, Page(s):87 - 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    Few works have been done on the impact of poor data quality on scheduling and planning. This paper presents two dimensions of data quality: accuracy and granularity of attributes. After the modelling of data inaccuracy by different methods, the authors develop simulation experiments in the field of flowshop scheduling so as to study the impact of inaccuracy on scheduling (heuristics sensitivity). ... View full abstract»

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  • The development of PC-based highly model-mixed engine dispatching systems

    Publication Year: 1997, Page(s):49 - 54
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (732 KB)

    This paper aims to propose the design and implementation of a real-time model-mixed engine dispatching system. The proposed engine dispatching system (EDS) is applied to the engine plant of Ford Lio-Ho Motor Company. The production system of Ford Lio-Ho Engine Plant (FLHEP) is a highly model-mixed production system. It attempts to achieve the goals of more flexibility, higher efficiency, lower cos... View full abstract»

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