检索结果-内蒙古大学图书馆

A magneto-thermal study of a high-speed synchronous reluctance machine

IEEE TRANSACTIONS ON MAGNETICS 2006年第4期42卷 1271-1274页

作者： Lamghari-Jamal, MI Fouladgar, J Zaim, EH Trichet, D Univ Nantes Ecole Polytech F-44600 St Nazaire France Univ Nantes F-44600 St Nazaire France

the paper presents a magneto-thermal model of a high-speed synchronous reluctance machine (SRM). Both magnetic and thermal aspects are described using two-dimensional and three-dimensional finite-element method for machine modeling. Additional current harmonics losses, friction losses, and convective exchange coefficients at high speed are estimated. Finally, test results on a 20 kW, 20 000 rpm SRM are reported and compared with the simulation results.

关键词： high speed synchronous reluctance machine thermal modeling

来源：评论

学校读者我要写书评

暂无评论

Finite elements modeling for the characterization of rigidity increment of a piezoceramic actuator integrated in thermoplastic parts

Finite elements modeling for the characterization of rigidit...

引用

15th IASTED International conference on Applied simulation and Modelling

作者： Elsoufi, L. Charon, W. Zoaeter, M. Lachat, R. Khalil, K. Univ Technol Belfort Montbeliard F-90010 Belfort France

ISBN: (纸本)0889865590

Plate and shell laminates that include piezoelectric layers have found increasing use in modern engineering applications, especially in the field of smart structures, where the piezoelectric components are used as actuator and sensor. Many functional constraints prohibit controlling the structure by elements reported on surfaces of the object. thus, the piezoelectric actuators and sensors necessary for the control of the structures will be integrated into this one, i.e., in material even the material of the shell. the current development of the integrated smart structures is primarily carried out in supports with thermosetting materials which constitute an obstacle to their development in the automobile sector where the parameter of recycling is dominating. For this reason, we propose to use thermoplastic materials. Unfortunately, the current processes of achieving models in smart thermoplastic structures are not directly exploitable for the integration of components such as the piezoelectric actuators and sensors which are fragile and sensitive to the temperature. the objective of this work consists on studying the thermal behavior of piezoelectric actuator in order to characterize its rigidity increment with a systematic increase of temperature by using the homogenization theory and the finite elements modeling developed under "ANSYS" and "ROBOT Millennium" software.

关键词： homogenization equivalent modulus finite elements modeling piezoelectric actuator rigidity increment

来源：评论

学校读者我要写书评

暂无评论

Stochastic modeling of gearbox via genetic algorithm

Stochastic modeling of gearbox via genetic algorithm

引用

15th IASTED International conference on Applied simulation and Modelling

作者： Khanmohammedi, S. Alizadeh, G. Giasi, A. R. Ettefagh, M. M. Univ Tabriz Fac Elect & Comp Engn Tabriz Iran Univ Tabriz Fac Mech Engn Tabriz Iran

ISBN: (纸本)0889865590

Determining the gearbox model has a high importance in validation stage of different fault diagnosis process. Most of previous proposed models were deterministic. Meanwhile the stochastic approach for modeling of signals could improve the model accuracy. In this paper the idea of stochastic modeling of amplitude and phase module is applied for gearbox modeling by using McFadden model. Studying the properties of gearbox amplitude and phase modulation signals, it is seen that the bounded sinusoidal stochastic model is suitable for accurate modeling of amplitude and phase module. the proposed stochastic model contains some parameters to be identified. In this paper the genetic identification algorithm has been used. the good accuracy of proposed model is shown by using the Mont-Carlo simulation of gearbox signal.

关键词： gearbox signal modeling bounded random process McFadden model genetic optimization

来源：评论

学校读者我要写书评

暂无评论

Petri Net based modeling and simulation of pipelined block-cyclic broadcasts

Petri Net based modeling and simulation of pipelined block-c...

引用

15th IASTED International conference on Applied simulation and Modelling

作者： Souravlas, Stavros I. Roumeliotis, Manos Univ Macedonia Appl Informat Dept 156 Egnatia St Thessaloniki Greece

ISBN: (纸本)0889865590

Many complicated parallel computing applications are composed of several stages. As the program proceeds from one stage to another, it may require different distribution of data between several processor sets. Examples of such applications are the alternate direction implicit method and the multidimensional Fast Fourier Transform. the block-cyclic redistribution is one of the most common methods in literature, that handles runtime data redistributions. In this paper, we initially propose a pipeline based block-cyclic redistribution strategy for redistributing variable sized messages. We then model this scheme using Petri Nets and we implement a simple block-cyclic redistribution simulator.

关键词： pipeline block-cyclic redistribution parallel processors modeling simulation Petri Nets

来源：评论

学校读者我要写书评

暂无评论

Dynamic simulation of vacuum pressure swing adsorption process

Dynamic simulation of vacuum pressure swing adsorption proce...

引用

15th IASTED International conference on Applied simulation and Modelling

作者： Mofarahi, Masoud Persian Gulf Univ Dept Chem Engn Bushehr Iran

ISBN: (纸本)0889865590

A general dynamic model describing the adsorptive separation was applied to propylene/propane separation system over 5A zeolite. the model is used to investigate the dynamics of the VPSA pilot plant. A mathematical model of the adsorption beds was formulated by application of fundamental mass- and energy transport modeling. For a feed to a conventional VPSA unit, containing an equimolar mixture of propylene and propane. Effects of a number of design parameters such as pressure history, feed rate and dilution with H,, purge rate and temperature on the product purity and recovery were investigated. the comparison of experiments and simulation gave a reasonable agreement.

关键词： simulation modelling vacuum pressure swing adsorption propylene/propane separation

来源：评论

学校读者我要写书评

暂无评论

Information fusion for simulation based decision support in manufacturing

引用

ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING 2006年第5-6期22卷 429-436页

作者： De Vin, Leo J. NG, Amos H. C. Oscarsson, Jan Andler, Sten F. Univ Skovde Ctr Intelligent Automat S-54128 Skovde Sweden Univ Skovde Distributed Real Time Syst Res Grp S-54128 Skovde Sweden

Robust and informed decisions are important for the efficient and effective operation of installed production facilities. the paper discusses Information fusion (IF) including a generic model for IF, and situations for decision-making. the paper also discusses current and future use of manufacturing resource simulation for design/configuration, operational planning and scheduling, and service and maintenance of manufacturing systems. Many of these applications use IF in some way, as is explained in more detail for simulation based service and maintenance. An extension of the generic model for IF is presented which incorporates modeling and simulation, and active databases as used in a simulation based service and maintenance system at the authors' laboratory. (C) 2006 Elsevier Ltd. All rights reserved.

关键词： information fusion virtual manufacturing

来源：评论

学校读者我要写书评

暂无评论

Dynamic simulation of high-density perpendicular recording head and media combination

引用

IEEE TRANSACTIONS ON MAGNETICS 2006年第4期42卷 943-946页

作者： Liu, ZJ Long, HH Ong, ET Li, EP Li, JT Natl Univ Singapore Data Storage Inst Singapore 117608 Singapore Inst High Performance Comp Singapore 117528 Singapore

this paper presents numerical simulation of high-density magnetic recording process with perpendicular head and media. the simulation is based on three-dimensional micromagnetic model of the media and an analytical model of the single pole perpendicular recording write field. the physical problem is modeled with a hybrid FEM-BEM formulation and the evaluation is accelerated using a new Fast Fourier Transform on Multipoles method. the model is suitable for studying magnetization transition configuration in perpendicular media with softmagnetic underlayer, and in turn can be used to derive microtrack model for evaluating the performance of recording systems.

关键词： fast multipoles method FFT hybrid FEM-BEM micromagnefic modeling microtrack model

来源：评论

学校读者我要写书评

暂无评论

behavioral modeling of semiconductor devices taking into account the thermoelectrical effect using VHDL-AMS

Behavioral modeling of semiconductor devices taking into acc...

引用

15th IASTED International conference on Applied simulation and Modelling

作者： Mortezaee, R. Karimi, Gh. R. Mirzakochaki, S. Malekshahi, M. Islamic Azad Univ Seveh Tehran Iran Elect Engn Dept IUST Tehran Iran Razi Univ Kermanshah Tehran Iran

ISBN: (纸本)0889865590

the goal of this paper is to describe a methodology for modeling and simulation of thermal effects in semiconductor devices. this paper presents an application of the new standard of VHDL language: VHDL-AMS in the field of thermal effect in semiconductor devices. the principles, techniques and methodology used to achieve the design of an analytical third generation Spice transistor MOS model named EKV are presented, taking into account the thermoelectrical effect with VHDL-AMS, and with relevant parameters set to match a deep submicron technology. the models were validated using System Vision software from Mentor Graphics.

关键词： methodology semiconductor devices VHDL-AMS thermal effect

来源：评论

学校读者我要写书评

暂无评论

Integration of stochastic generation in power systems 15

Integration of stochastic generation in power systems

引用

15th Power Systems Computation conference (PSCC 05)

作者： Papaefthymiou, G. Schavemaker, P. H. van der Sluis, L. Kling, W. L. Kurowicka, D. Cooke, R. M. Delft Univ Technol Inst Appl Math Delft Netherlands Eindhoven Univ Technol NL-5600 MB Eindhoven Netherlands

Stochastic generation, i.e., electrical power production by an uncontrolled primary energy source, is expected to play an important role in future power systems. A new power system structure is created due to the large-scale implementation of this small-scale, distributed, non-dispatchable generation;the 'horizontally-operated' system. modeling methodologies that can deal with the operational uncertainty introduced by these power units should be used for analyzing the impact of this generation to the system. In this contribution, the principles for this modeling are presented, based on the decoupling of the single stochastic generator behavior (marginal distribution-stochastic unit capacity) from the concurrent behavior of the stochastic generators (stochastic dependence structure-stochastic system dispatch). Subsequently.. the stochastic hounds methodology is applied to model the extreme power contribution of the stochastic generation to the system, based on two new sampling concepts (comonotonicity-countermonotonicity). the application of this methodology to the power system leads to the definition of clusters of positively correlated stochastic generators and the combination of different clusters based on the sampling concepts. the stochastic decomposition and clustering concepts presented in this contribution provide the basis for the application of new uncertainty analysis techniques for the modeling of stochastic generation in power systems. (C) 2006 Elsevier Ltd. All rights reserved.

关键词： stochastic power generation distributed generation steady-state analysis uncertainty analysis Monte-Carlo simulation risk management

来源：评论

学校读者我要写书评

暂无评论

Criteria for the optimal design of magneto-encephalography measurement system

引用

IEEE TRANSACTIONS ON MAGNETICS 2006年第4期42卷 1155-1158页

作者： Ferraioli, F Formisano, A Martone, R Romagnuolo, N Univ Naples 2 Dipartimento Ingn Informaz I-80131 Naples Italy Ansaldo Ric SpA I-80147 Naples Italy

Magneto-encephalography is a promising technique for the in vivo monitoring of brain activity. the information about neural activity is reconstructed from the electrical current map of the brain, which is in turn deduced, via an inverse problem resolution, from the magnetic field map measured by superconductive quantum interference devices placed around the head. In this paper, a possible strategy to improve the detection ability of the procedure by optimally designing the representation system is proposed and discussed.

关键词： electromagnetic modeling of biological systems inverse problems source identification

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：