检索结果-南通市图书馆

The Application of Simulation Technique in Whole CIMS Life Cycle

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of systems Engineering and Electronics 1994年第3期5卷 64-67,70-72页

作者： Xiong Guangleng and Guo Jianbo (Department of Automation, Tsinghua University Beijing 1000084, P.R.China ) Department of Automation Tsinghua University Beijing 1000084 P.R. China

The life cycle of CIMS (Computer Integrated manufacturing System) includes four phases:requirement analyzing, designing, implementation and running. For reducing the risk of investment and achieving better economic results the simulation technique is needed in the above four phases of CIMS life cycle. Under the support of China 863/CIMS plan a series of simulation projects are established. Some of them are finished with succeed and have been used in application. In this paper four simulation projects are introduced.(1) The Integrated manufacturing Simulation Software (IMSS). It is an integrated platform, based on the discrete event simulation principle. It can be used to analyze and design CIMS, especially FMS; and evaluate the daily production plan.(2) The Advanced Hierarchical Control System Emulator (AHCSE), a software system, based on the finite state machine principle. It can be used to analyze and design of CIMS hicrarchical control system, and check expanded system performance before expanding.(3) The Factory Scheduling Environment (FASE), a software system based on the discrete event simulation principle and artificial intelligence technology. It can be used for shop floor scheduling. (4) The Machining Process Simulator (MPS). It can simulate the machining process of machining center by computer. It can check the correctness of NC code (including interference and confliction) and replace the real machining center to support the simulation environment for shop floor scheduling and controlling. There are three companies and universities joining in these four projects, they are: Tsinghua University,Huazhong University of Technology, Beliing Institute of Computer Application and Simulation.

关键词： manufacturing systems Modeling and simulation CIAS life cycle.

维普期刊数据库

Intelligent manufacturing in the Context of Industry 4.0： A Review

在线全文

学校读者我要写书评

暂无评论

Engineering 2017年第5期3卷 616-630页

作者： Ray Y. Zhong Xun Xu Eberhard Klotz Stephen T. Newman Department of Mechanical Engineering The University of Auckland Auckland 1142 New Zealand Industry 4.0 Campaign Festo AG & Co. KG Esslingen F3726 Germany Department of Mechanical Engineering University of Bath Bath BA2 7AY UK

Our next generation of industry-lndustry 4.0-holds the promise of increased flexibility in manufacturing, along with mass customization, better quality, and improved productivity. It thus enables companies to cope with the challenges of producing increasingly individualized products with a short lead-time to market and higher quality. Intelligent manufacturing plays an important role in Industry 4.0. Typical resources are converted into intelligent objects so that they are able to sense, act, and behave within a smart environment. In order to fully understand intelligent manufacturing in the context of Industry 4.0, this paper provides a comprehensive review of associated topics such as intelligent manufacturing, Internet of Things （IoT）- enabled manufacturing, and cloud manufacturing. Similarities and differences in these topics are highlighted based on our analysis. We also review key technologies such as the loT, cyber-physical systems （CPSs）, cloud computing, big data analytics （BDA）, and information and communications technology （ICT） that are used to enable intelligent manufacturing. Next, we describe worldwide movements in intelligent manufacturing, including governmental strategic plans from different countries and strategic plans from major international companies in the European Union, United States, Japan, and China. Finally, we present current challenges and future research directions. The concepts discussed in this paper will spark new ideas in the effort to realize the much-anticipated Fourth Industrial Revolution.

关键词： Intelligent manufacturing Industry 4.0 Internet of Things manufacturing systems Cloud manufacturing Cyber-physical system

Memory and machine attributes-based profiling and elliptic curve cryptography-based multi-level authentication for the security of Internet of Things

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Intelligent Computing and Cybernetics 2017年第2期10卷 241-256页

作者： Vivek V.Jog Senthil Murugan,T. Department of Computer Science and Engineering Vel Tech Dr.RR&Dr.SR Technical UniversityChennaiIndia

Purpose-Due to the connectivity of the multiple devices and the systems on the same network,rapid development has become possible in Internet of Things(IoTs)for the last ***,IoT is mostly affected with severe security challenges due to the potential vulnerabilities happened through the multiple connectivity of sensors,devices and *** order to handle the security challenges,literature presents a handful of security protocols for *** purpose of this paper is to present a threat profiling and elliptic curve cryptography(ECC)-based mutual and multi-level authentication for the security of *** work contains two security attributes like memory and machine-related attributes for maintaining the profile ***,the profile table stores the value after encrypting the value with ECC to avoid storage resilience using the proposed ***,three entities like,IoT device,server and authorization centre(AC)performs the verification based on seven levels mutually to provide the resilience against most of the widely accepted ***,DPWSim is utilized for simulation of IoT and verification of proposed protocol to show that the protocol is secure against passive and active ***/methodology/approach-In this work,the authors have presented a threat profiling and ECC-based mutual and multi-level authentication for the security of *** work contains two security attributes like memory and machine-related attributes for maintaining the profile ***,the profile table stores the value after encrypting the value with ECC to avoid storage resilience using the proposed ***,three entities like,IoT device,server and AC performs the verification based on seven levels mutually to provide the resilience against most of the widely accepted ***-DPWSim is utilized for simulation of IoT and verification of the proposed protocol to show that this protocol is secure against passive and active ***,at

关键词： Security Authentication Internet of Things(IoT) manufacturing systems Networked control DNA computing Elliptic curve cryptography(ECC) Profile table

FUZZY LOGIC BASED UNCERTAINTY REPRESENTATION AND SIMULATION IN A FLEXIBLE ASSEMBLY SYSTEM

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Modeling, Simulation, and Scientific Computing 2012年第3期3卷 118-139页

作者： AHAD ALI A.Leon Linton Department of Mechanical Engineering Lawrence Technological University 21000 West Ten Mile Road Southfield Michigan 48075USA

This paper provides intelligent simulation approach using manufacturing uncertainty in the form of simulation intelligence to improve the performances of manufacturing production *** shows how simulation can be used to evaluate alternative designs in an uncertain manufacturing *** rule-based manufacturing uncertainties are addressed in this study.A combination of product mix and production volume is analyzed using intelligent simulation model for an optimal production *** intelligent simulation approach would improve the modeling accuracy in terms of more realistic presentation of uncertain *** proposed intelligent simulation modeling shows significant improvement and validated with real life application.

关键词： Simulation manufacturing systems uncertainty product mix modeling

A Survey of the Use of the Discrete-event Simulation in manufacturing Industry

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

厦门大学学报（自然科学版） 2002年第S1期41卷 193-195页

作者： Arne Ingemansson Gunnar S Bolmsj Ulrika Harlin Department of Mechanical Engineering Lund UniversityDepartment of Mechanical Engineering Lund UniversityIVF Industrial Research and Development Corporation Mlndal SwedenSwedenSweden

In this work, a survey of companies has been produc ed from a questionnaire and in-depth inter-views. The aimof the paper is to give a current view of the use of DES (Discrete- Event Simulation) in the indust ry. The companies have been selected in a wide range in e.g. size, capital turno ver and employees. The survey was restricted to Sweden, although the results may be applicable to other countries with similar industrial structure. Some of the companies investigated are also multinational with branches around the world. T o illustrate the differences in production systems different sectors have be en investigated, e.g. the manufacturing industry and energy sector. The manufact uring systems generally differ in that the energy sector is more known for high reliability in their systems and the manufacturing sector tends to work more wit h lean production. Previous surveys of manufacturing efficiency illustrate different aspects. Accor ding to one survey, more than one-third (34%) of the disturbances in two countr ies (the U.S. and Finland) were mainly caused by design-based errors and flaws. The survey also showed the scope of safety problems experienced in the implemen tation and use of flexible manufacturing systems (Jrvinen et al., 1996). Another survey in Germany reports a gap between users and non-users of DES. Man y companies that are not familiar with simulation are not aware of its benefits. The study suggested integrating simulation into the planning processes as a reg ular tool. So far, DES is mostly used in system planning, resource planning and scheduling and production planning (Hirschberg & Heitmann, 1997). The disposition of the accomplished questionnaire had been multiple-choice ques tions in a strict order. The respondents gave their views on what the interviewe r considered relevant for the survey. The questionnaire was mailed to 220 person s in May 2001; a second round for unanswered surveys was dispatched in August 20 01. Replies came from 114 r

关键词： discrete-event simulation manufacturing systems disturbances productivity improvement

维普期刊数据库

Load Allocation Research in a manufacturing System

在线全文

学校读者我要写书评

暂无评论

International Journal of Plant Engineering and Management 2006年第3期11卷 166-173页

作者： ZHANG Yi-ping LI Lin-lin HUANG Wei Suzhou Vocational University Suzhou 215104 P. R. China Suzhou Industrial Park Institute of Vocational Technology Suzhou 215021 P. R. China

Based on queuing theory, a nonlinear optimization model is proposed in this paper, which has the service load as its objective function and includes three inequality constraints of Work In Progress （WIP）. A novel transformation of optimization variables is also devised and the constraints are properly combined so as to make this model into a convex one from which the Lagrangian function and the Karurh Kuhn Tucker （KKT） conditions are derived. The interior-point method for convex optimization is presented here as a computationaUy efficient tool. Finally, this model is evaluated on a real example, from which such conclusions are reached that the optimum result can ensure the full utilization of machines and the least amount of WIP in manufacturing systems; the interior-point method needs fewer iterations with significant computational savings and it is possible to make nonlinear and complicated optimization problems convexified so as to obtain the optimum.

关键词： load allocation manufacturing systems convex optimization

维普期刊数据库

The Development of an ERP Application within a Computer Integrated manufacturing Laboratory

在线全文

学校读者我要写书评

暂无评论

The Development of an ERP Application within a Computer Inte...

Agent-based Holonic Dynamic and Optimal manufacturing System for Distributed manufacturing

第25届中国控制会议

作者： Dumbrava Stefan “Gh．Asachi”Technical University of lasi Faculty of Automatic Control and Computer Engineering Iasi 700050Romania

＜正＞Enterprise control applications are becoming more and more complex, exploiting distributed object technology in multi-tier architectures. For educational purposes, the development of a manufacturing control laboratory that may emphasize the new control techniques and the overall integration of the system activities with business processes is a complex and challenging task. In the paper, an educational enterprise application that integrates the ERP concept together with a Flexible manufacturing System in a Computer Integrated Laboratory is presented. It contains modularized, distributed subsystems in configurable and maintainable software, covering the business processes, from the customer order, to planned order dispatch. The software architecture contains the ERP components that are implemented using Enterprise Java Beans, deployed in a J2EE application server. It enables transactions with the business environment, shop-floor system and the database. The application is conceptually designed and analyzed using a visual model developed in Unified Modeling Language.

关键词： Computer-integrated enterprises manufacturing systems Control engineering Conceptual representation Software engineering

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Agent-based Holonic Dynamic and Optimal Manufacturing System...

A Control Model for Automated Assembly systems with a Multi-agent Architecture

2009 International Conference on Environmental Science and Information Application Technology

作者： Linghong Lai Departmant of ordnance and transportation Engineering College of CAPF.Xi’an China

In the inter-enterprise cooperative manufacturing mode,meeting the dynamic demand of manufacturing information management,comprehensivly utilizing and fully communicating,based on holonic theory,this paper describes a practical system framework for holonic design and operations in a distributed manufacturing environment using multi-agent *** on the negotiation mechanism of multi-agent,the optimizing of dynamic holonic manufacturing systems is study.A dynamic holonic manufacturing systems implementation is developed to demonstrate and validate the proposed *** shows that the proposed system can satisfy the agility,distribution,and robustness requirements.

关键词： holonic multi-agent manufacturing systems

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

A Control Model for Automated Assembly Systems with a Multi-...