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18th International Conference on Computational Problems of Electrical Engineering (CPEE)

作者： Plakhtyna, Omelyan Kutsyk, Andriy Semeniuk, Mykola Kuznyetsov, Oleksiy Univ Sci & Technol Bydgoszcz Poland Lviv Polytech Natl Univ Lvov Ukraine Hetman Petro Sahaidachnyi Natl Army Acad Lvov Ukraine

ISBN: (纸本)9781538610404

The program environment for electromechanical system analysis based on object-oriented approach and authorial method of mathematical modeling is presented. This environment allows constructing computer models of comprehensive electrotechnical systems with semiconductor converters. Such computer models are distinguished by the high operation speed and ability of real-time operation in interaction with physical equipment. These features of computer models developed using the program environment allow their application in testing physical control systems by connecting a real control system to a computer simulator of the controlled object.

关键词： object-oriented modeling computer simulation electrotechnical system

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object-oriented approach for serviceability analysis and evaluation

Object-oriented approach for serviceability analysis and eva...

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6th Industrial Engineering Research Conference (IERC6)

作者： Wang, JP Allada, V Univ Missouri Dept Engn Management Comp Integrated Mfg Lab Rolla MO 65401 USA

ISBN: (纸本)0898061776

Design for serviceability influences the product usage life and is one of the active research areas of environmentally conscious design and manufacturing (ECDM). This paper deals with the development of a framework ibs serviceability analysis and evaluation of electromechanical and mechanical products. The framework consists of two major modules: serviceability evaluation module and object-oriented data modeling module. In this paper, the fuzzy neural network based serviceability evaluation module is briefly presented. Detailed description of this module appears in another paper by the authors [8]. The object-oriented data modeling module (OODM) consists of two sub-modules: object-oriented product data model (OOPDM) and object-oriented service resources model (OOSRM). The OOPDM and OOSRM supports the serviceability evaluation.

关键词： serviceability analysis object-oriented modeling

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object-oriented Model Validation for Single Bowden Power Window System Development 1

Object-oriented Model Validation for Single Bowden Power Win...

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IEEE International Symposium on Systems Engineering (ISSE) Proceedings

作者： Patalano, Stanislao Vitolo, Ferdinando Lanzotti, Antonio Univ Naples Federico II Dept Ind Engn Naples Italy

ISBN: (纸本)9781479919192

The paper deals with automotive power window systems and, in particular, tackles the problem of validating the object-oriented model of a single bowden system, to be used within a Model-Based System Engineering (MBSE) approach. Therefore, the paper tackles the problem of increasing accuracy of object-oriented models by defining model refinements i.e. by identifying objects whose modelling has to be improved. Firstly, the role of object-oriented modelling and the main characteristics of the power window system are summarized. Then, the objectoriented model of an automotive single bowden power window system is presented. Finally, the experimental phase, performed to characterize the behavior of the real system is summarised and the validation of simulation model, as well as the identification of model refinement, are accomplished.

关键词： mechatronic systems object-oriented modeling single bowden power window system model validation

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Atomic use case: A concept for precise modelling of object-oriented information systems

Atomic use case: A concept for precise modelling of object-o...

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9th International Conference on object-oriented Information Systems

作者： Nguyen, K Dillon, T La Trobe Univ Dept Comp Sci & Comp Engn Melbourne Vic 3086 Australia

ISBN: (纸本)3540408606

We propose the concept of "atomic use case" and demonstrate how this concept can be used to bring the analysis of functional requirements of information systems to a much deeper level than usual, and ultimately to construct a precise specification of the system's functionality. Specifically, the complete functionality of an information system is defined by a set of atomic use cases, which axe consistently specified in terms of their input, output, pre- and postcondition. We also show that the usefulness of the atomic use case concept goes beyond analysis. With this concept, a characterization of the business logic layer can be clearly formulated, and this layer can be systematically extended to effectively support the construction of graphical user interface.

关键词： object oriented analysis object-oriented modeling object-oriented information systems object database formal notation object-Z prototyping user interface

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Comparisons between the three-phase current injection method and the forward/backward sweep method

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INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS 2010年第7期32卷 825-833页

作者： de Araujo, Leandro Ramos Ribeiro Penido, Debora Rosana Carneiro Junior, Sandoval Rezende Pereira, Jose Luiz Nepomuceno Garcia, Paulo Augusto Univ Fed Juiz de Fora Dept Elect Engn Juiz De Fora MG Brazil Univ Fed Rio de Janeiro Dept Elect Engn Rio De Janeiro Brazil

This paper presents comparisons of two power flow methodologies for distribution system analysis: the three-phase current injection method - TCIM and the forward/backward sweep - FBS. These techniques were applied for large scale three-phase distribution systems, the advantages and drawbacks are emphasized and their computational performances are presented. The results presented in this work can be helpful to decide which one of the tested methods is the most suitable to solve a particular electrical system. (C) 2010 Elsevier Ltd. All rights reserved.

关键词： Distribution systems Forward-backward sweep method object-oriented modeling Power flow analysis Three-phase current injection method Three-phase systems

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A PAM approach to handling disruptions in real-time vehicle routing problems

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DECISION SUPPORT SYSTEMS 2013年第3期54卷 1380-1393页

作者： Hu, Xiangpei Sun, Lijun Liu, Linlin Dalian Univ Technol Sch Management & Econ Inst Syst Engn Dalian 116023 Liaoning Provin Peoples R China

During the urban distribution process, unexpected events may frequently result in disruptions to the current distribution plan, which need to be handled in real-time vehicle routing. In this paper, a knowledge-based modeling approach, PAM (disruption-handling Policies, local search Algorithms and object-oriented modeling), is developed, which combines the scheduling knowledge of experienced schedulers with the optimization knowledge concerning models and algorithms in the field of Operations Research to obtain an effective solution in real time. Experienced schedulers can respond to different disruptions promptly with heuristic adjustment based on their experience, but their solutions may be inaccurate, inconsistent, or even infeasible. This method is limited when the problem becomes large-scale. The model-algorithm method can handle large-scale problems, but it has to predefine a specific disruption and a specific distribution state for constructing a model and algorithm, which is inflexible, time-consuming and consequently unable to promptly obtain solutions for responding to different disruptions in real time. PAM modeling approach combines the advantages and eliminates the disadvantages of the two methods aforementioned. Computational experiments show that solutions achieved by this modeling approach are practical and the speed of achieving the solutions is fast enough for responding to disruptions in real time. (C) 2012 Elsevier B.V. All rights reserved.

关键词： Knowledge representation object-oriented modeling Local search algorithm Disruption Real-time Vehicle Routing Problem (RVRP)

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Development of a computer-aided concurrent net shape product and process development environment

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ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING 1997年第4期13卷 337-360页

作者： Chen, YM Natl Cheng Kung Univ Inst Mfg Engn Tainan 70101 Taiwan

This paper presents a systematic approach to developing a collaborative environment for computer-aided concurrent net shape product and process development. This approach includes the steps of (1) conventional development process analysis, (2) development process re-engineering, (3) computer-based system functional requirements analysis, (4) system framework design, and (5) system modeling, integration and implementation. This environment can support concurrent net shape product and process development by providing and integrating functions of product data management, process management and development advisory tools. The results of this research will facilitate the rationalization and automation of net shape product and process development and thus improve the efficiency and quality, and reduce the cost of net shape product development. IDEF structural analysis methodology was employed to capture the characteristics of net shape product and process development process, The concept of concurrent engineering was used to re-engineer the development process. The technology of system engineering was used to design the computer-aided system framework. object-oriented analysis, modeling and design methodology, knowledge engineering and data engineering techniques were employed for system modeling and implementation. (C) 1997 Elsevier Science Ltd.

关键词： concurrent engineering product data management information sharing object-oriented modeling system integration

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Supervisory nonlinear MPC for emergency voltage control using pattern search

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CONTROL ENGINEERING PRACTICE 2009年第7期17卷 841-848页

作者： Negenborn, R. R. Leirens, S. De Schutter, B. Hellendoorn, J. Delft Univ Technol Delft Ctr Syst & Control NL-2628 CD Delft Netherlands Univ Los Andes Dept Ingn Elect & Elect Bogota Colombia

The design of a higher-layer controller using model predictive control (MPC) is considered. The higher-layer controller uses MPC to determine set-points for controllers in a lower control layer. In this paper the use of an object-oriented model of the system for making predictions is proposed. When employing such an object-oriented prediction model the MPC problem is a nonlinear, non-smooth optimization problem, with an objective function that is expensive to evaluate. Multi-start pattern search is proposed as approach to solving this problem, since it deals effectively with the local minima and the non-smoothness of the problem, and does not require expensive estimation of derivatives Experiments in an. emergency voltage control problem on a 9-bus dynamic power network show the superior performance of the proposed multi-start pattern-search approach when compared to a gradient-based approach. (C) 2009 Elsevier Ltd. All rights reserved.

关键词： Power networks Supervisory control Model predictive control Pattern search object-oriented modeling Voltage control

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Modular dynamic virtual-reality modeling of robotic systems

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IEEE ROBOTICS & AUTOMATION MAGAZINE 1999年第4期6卷 13-23页

作者： Ferretti, G Filippi, S Maffezzoni, C Magnani, G Rocco, P Politecn Milan Dept Elect & Informat I-20133 Milan Italy

An integrated and efficient modular approach supported by an object-oriented database for modeling simulation, and 3-D animation.

关键词： dynamic modeling simulation virtual reality object-oriented database VRML modeling object-oriented modeling

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Traceability between models and texts through terminology

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DATA & KNOWLEDGE ENGINEERING 2001年第1期38卷 31-43页

作者： Cerbah, F Euzenat, J ESA DPR Dassault Aviat F-92552 St Cloud 300 France INRIA Rhone Alpes F-38330 Monbonnot St Martin France

modeling often concerns the translation of informal texts into formal representations. This translation process requires support for itself and for its traceability. We pretend that inserting a terminology between informal textual documents and their formalization can help to serve both of these goals. Modern terminology extraction tools support the formalization process by using terms as a first sketch of formalized concepts. Moreover, the terms can be employed for linking the concepts and the textual sources. They act as a powerful navigation structure. This is exemplified through the presentation of a fully implemented system. (C) 2001 Elsevier Science B.V. All rights reserved.

关键词： terminology extraction traceability model generation hypertext object-oriented modeling natural language

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