检索结果-内蒙古大学图书馆

第三届数字制造与自动化国际会议

作者： Man Zhang Yongqiang Yang Department of Mechanical and Electrical Engineering Shaanxi University of Science ＆ Technology

This article designs a kind of automatic adjustment of the press control values based on PLC including the design of function, composition, principle and software. It not only analyses and studies the structure and th... 详细信息

关键词： press control values automatic adjustment programmable logic controller

来源：评论

学校读者我要写书评

暂无评论

Control System Design of Palletized Loading System Based on PLC and Fuzzy Control Technology

Control System Design of Palletized Loading System Based on ...

引用

2012 IEEE International Conference on Computer Science and Automation Engineering（CSAE 2012）

作者： Meng Xiangde Military Transportation University Tianjin,China Li Lishun Military Transportation University Tianjin,China

Based on the function of Palletized Loading System and the operation principle of the self-loading and unloading system,a set of electro-hydraulic control system was designed which its core is mobile programmable logic controller(PLC).For the non-linear kinematics characteristic of the self-loading and unloading mechanism,a fuzzy controller was designed with two input variables and one output variable in it and was achieved via the method of off-line inference and on-line looking up table in PLC.

关键词： programmable logic controller Fuzzy Control Palletized Loading System Hydraulic

来源：评论

学校读者我要写书评

暂无评论

Research of Automotive Airbag Automatic Folding Device

Research of Automotive Airbag Automatic Folding Device

引用

2012 International Conference on Materials and Manufacturing Research (ICMMR 2012)

作者： Wei Zhang Zhigang Guo Xiaodong Wang Liangdong An Hui Chen School of Mechatronic Engineering Changchun University of Technology

In order to improve the quality of folding and increase the production efficiency in the process of airbag folding,a new airbag automatic folding device(AAFD) with programmable logic controller(PLC) as control unit and magnetic induction sensors as well as photoelectric sensors as trace positional parameters of rolling bag institutions has been developed. In addition, the important data of the device can also be stored by structured query language(SQL) which can query, update, and manage relational database system. The experimental results showed that, compared to a traditional AFD, the uniformity of gap during the production of airbag folding had been significantly improved, and the impact of human interference had also been reduced. Meanwhile, the device can produce a variety of types of products and also can ensure the quality of products, improve the production efficiency, and enhance the degree of standardization of the device.

关键词： Airbag Airbag folding device programmable logic controller Versatility

来源：评论

学校读者我要写书评

暂无评论

Enhancement of a stand-alone photovoltaic system's performance: Reduction of soft and hard shading

引用

RENEWABLE ENERGY 2011年第4期36卷 1306-1310页

作者： Lamont, Lisa A. El Chaar, Lana Petr Inst Dept Elect Engn Abu Dhabi U Arab Emirates

A stand-alone photovoltaic (PV) system is the most promising solution to supply electric power to meet energy demand in isolated locations. This technology can offer an interesting alternative to other currently existing sources of energy. Due to space constraint in the remote offshore oil and gas industry, a stand-alone system is used for cathodic protection, telemetry and valve control. However in such an environment, dust accumulation and bird droppings have been critical issues to the operation of off-grid solar devices. These factors do not only reduce the available power of the modules but also makes the cost of solar devices ineffective since cleaning, especially on well-head towers, is very expensive due to the location. Hence this paper presents two technical solutions that have shown promising results in reducing the impact of these factors. (C) 2010 Elsevier Ltd. All rights reserved.

关键词： Stand-alone photovoltaic systems Solar energy Dust accumulation Bird droppings Microcontroller programmable logic controller

来源：评论

学校读者我要写书评

暂无评论

A Model-Integrated Computing based Tool Prototype for Designing programmable logic controllers

A Model-Integrated Computing based Tool Prototype for Design...

引用

2011 International Conference on Intelligent Computing and Integrated Systems(ICISS 2011)

作者： Rongqing LI Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China Xingguo QIN Guilin University of Electronic Technology, Guilin, Chinarq.li@***

Computer-Integrated Manufacturing employs computers for controlling the process of production in the manufacturing. programmable logic controllers are controlling devices that commonly used for controlling the process of production. In this paper, we construct a tool prototype based on Model-Integrated Computing for designing programmable logic controllers. By exploring the basic elements and relationships in programmable logic controllers, we abstract a meta-model from them and construct the metamodel in Generic Modeling Environment. After interpreting the meta-model, an extensible and hierarchical tool prototype is generated. A printing control system is taken as a case study. We could construct the programmable logic controller model of the printing control system in the tool prototype. By using the interpreter we have built, non-Ladder Diagram parts of the printing control system model could be translated into Structured Text.

关键词： Computer-Integrated Manufacturing programmable logic controller Model-Integrated Computing Generic Modeling Environment Printing Control System

来源：评论

学校读者我要写书评

暂无评论

An FPGA Implementation of Hard-Wired Sequence Control System Based On PLC Software

引用

IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING 2011年第4期6卷 367-375页

作者： Ichikawa, Shuichi Akinaka, Masanori Hata, Hisashi Ikeda, Ryo Yamamoto, Hiroshi Toyohashi Univ Technol Dept Knowledge Based Informat Engn Tempaku Ku Toyohashi Aichi 4418580 Japan

Although a programmable logic controller (PLC) has been widely adopted for the sequence control of industrial machinery, its performance does not always satisfy the recent requirements in large and highly responsive systems. With the state-of-the-art field programmable gate array (FPGA) technology, it is possible to implement a control program with hard-wired logic for higher response and reduced implementation cost/space. This approach is also worthwhile for transmigration of legacy PLC software into forthcoming FPGA-based control hardware. This study presents a systematic method to implement a hard-wired sequence control from PLC software. PLC instructions are converted into VHDL codes, and then implemented as logic circuit with various peripheral functions. Productive PLC programs were examined with Mitsubishi Electric FX2N PLC and Altera Stratix II FPGA, and were shown to fit into a common FPGA chip. A straightforward Sequential design was estimated to be 184 times faster than PLC, while a performance-oriented Flat design was estimated to be 44 times faster than Sequential design (i.e., 8050 times faster than PLC). A practical perfect layer winder system was actually built and successfully operated with our FPGA control board, whose logic design was implemented with our tools. (C) 2011 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

关键词： programmable logic controller field programmable gate array sequence control ladder diagram embedded systems

来源：评论

学校读者我要写书评

暂无评论

Remote diagnosis design for a PLC-based automated system: 1-implementation of three levels of architectures

引用

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 2011年第5-8期57卷 683-700页

作者： Sekar, Ramnath Hsieh, Sheng-Jen Wu, Zhenhua Texas A&M Univ Dwight Look Coll Engn Dept Engn Technol & Ind Distribut College Stn TX 77843 USA Texas A&M Univ Dwight Look Coll Engn Dept Mech Engn College Stn TX 77843 USA

To troubleshoot the equipment installed in geographically distant locations, equipment manufacturers and system integrators are increasingly resorting to remote diagnosis, thereby achieving savings in cost and time for both customers and manufacturers. Remote diagnosis involves the use of communication technologies to perform fault diagnosis of a system located at a site distant to a troubleshooter. Several frameworks for remote diagnosis have been proposed, incorporating advancements such as automated fault diagnosis, collaborative diagnosis, and mobile communication techniques. Furthermore, standards for different levels of remote diagnosis exist. However, there has been relatively little research on the application of these levels of remote diagnosis architectures to diagnose failures in a discrete automated system. This paper is the first of two parts of a design for remote diagnosis for a programmable logic controller (PLC)-based discrete automated system. It investigates experimental variables, infrastructure, and hardware and software used for diagnosis in order to empirically validate the use of hierarchical levels of remote diagnosis architectures by experts to remotely diagnose failures in a PLC-based automated assembly line. Common failures in automated assembly systems were identified and duplicated. The suitability of each level of architecture for diagnosing different types of failures was evaluated based on ratings from experts in the field of automation. The experts opined that the architecture with the most advanced capabilities was most suitable for diagnosing failures related to measured or monitored system variables. For failures purely related to system hardware that could not be monitored, an architecture with basic capabilities was preferred.

关键词： Automated systems Remote diagnosis programmable logic controller Diagnosis architectures

来源：评论

学校读者我要写书评

暂无评论

Developing architecture for upgrading I&C systems of an operating nuclear power plant using a quality attribute-driven design method

引用

NUCLEAR ENGINEERING AND DESIGN 2011年第12期241卷 5281-5294页

作者： Suh, Yong Suk Keum, Jong Yong Kim, Hyeon Soo Chungnam Natl Univ Dept Comp Sci & Engn Taejon South Korea Korea Atom Energy Res Inst SMART Technol Validat Div Taejon South Korea

This paper presents the architecture for upgrading the instrumentation and control (I&C) systems of a Korean standard nuclear power plant (KSNP) as an operating nuclear power plant. This paper uses the analysis results of KSNP's I&C systems performed in a previous study. This paper proposes a Preparation-Decision-Design-Assessment (PDDA) process that focuses on quality oriented development, as a cyclical process to develop the architecture. The PDDA was motivated from the practice of architecture-based development used in software engineering fields. In the preparation step of the PDDA, the architecture of digital-based I&C systems was setup for an architectural goal. Single failure criterion and determinism were setup for architectural drivers. In the decision step, defense-in-depth, diversity, redundancy, and independence were determined as architectural tactics to satisfy the single failure criterion, and sequential execution was determined as a tactic to satisfy the determinism. After determining the tactics, the primitive digital-based I&C architecture was determined. In the design step, 17 systems were selected from the KSNP's I&C systems for the upgrade and functionally grouped based on the primitive architecture. The overall architecture was developed to show the deployment of the systems. The detailed architecture of the safety systems was developed by applying a 2-out-of-3 voting logic, and the detailed architecture of the non-safety systems was developed by hot-standby redundancy. While developing the detailed architecture, three ways of signal transmission were determined with proper rationales: hardwire, datalink, and network. In the assessment step, the required network performance, considering the worst-case of data transmission was calculated: the datalink was required by 120 kbps, the safety network by 5 Mbps, and the non-safety network by 60 Mbps. The architecture covered 17 systems out of 22 KSNP's I&C systems. The architecture is implementable wi

关键词： 1E electrical class 1E AAC D/G alternate AC diesel generator BDAS boron dilution alarm system BOP balance of plant BOP RMS BOP radiation monitoring system BP bistable processor CCG control channel gateway CEA control element assembly CEAC CEA calculator CEDM control element drive mechanism CEDM CS CEDM control system CEDM CS AC CEDM CS auxiliary cabinet CEDM MGC CEDM motor generator cabinet CET core exit thermocouple CIM component interface module CP coincidence processor CPC core protection calculator CPCS core protection calculation system CPM control panel multiplexer CPP CEA position processor CS confirm switch CWP CEA withdrawal prohibit DCS distributed control system DPS diverse protection system ENFMS ex-core neutron flux monitoring system ESFAS ARC engineered safety feature actuation system auxiliary relay cabinet FIDAS fixed in-core detector amplification system FPD flat panel display FWCS feedwater control system GC group controller HJTC heated junction thermocouple IC initiation circuit ICCMS inadequate core cooling monitoring system ICD in-core detector ILS interposing logic system Iso. isolator ITP interface and test processor LC loop controller LPMS loose parts monitoring system MCB main control board MCR main control room MTP maintenance and test panel N1E electrical non-class 1E NCCS non-safety component control system NCS NSSS control system NIAN non-safety indication and alarm network NIAS non-safety indication and alarm system NIMS NSSS integrity monitoring system NPIS non-safety process instrumentation system NSSS PCC NSSS process control cabinet NSSS PPC NSSS process protective cabinet NSSS RMSC NSSS radiation monitoring system cabinet NSSS nuclear steam supply system OM operator's module PAM post-accident monitoring PAMI post-accident monitoring and indication PAMS post-accident monitoring system PAS AC PAS auxiliary cabinet PAS plant annunciator system PASC PAS cabinet PAS CC PAS computer cabinet PCS plant computer system PDAS plant data acquisition system PIS process instrumentation system

来源：评论

学校读者我要写书评

暂无评论

An Embedded PLC Development for Teaching in Mechatronics Education

An Embedded PLC Development for Teaching in Mechatronics Edu...

引用

6th IEEE Conference on Industrial Electronics and Applications (ICIEA)

作者： Pratumsuwan, Pornjit Pongaen, Watcharin King Mongkuts Univ Technol N Bangkok Mechatron Educ Res Grp Teacher Training Mech Engn Dept Bangkok Thailand

ISBN: (纸本)9781424487554

The major obstacles to teaching programmable logic controller (PLC) is a variety of PLCs and the rapid pace of technological development with new models and innovations. Moreover, costs incurred in the setting up of comprehensive and modern PLC laboratory facilities, and in the required periodic updating of teaching material and equipment are, as a result, very high. After investigated the conception and features of PLC and embedded system, the development of the embedded PLC for teaching machatronics students is proposed in this paper with the seamless combination of the LabVIEW software and the ARM Microcontroller with the LabVIEW embedded module. The flexibility of the proposed PLC makes it relatively easy and less costly to teach the basic principle of different kinds of PLCs due to their variety and rapid change. The implementation of the embedded PLC is discussed and evaluated. The results of evaluation shows that embedded PLC can be taught in an uncomplicated manner.

关键词： programmable logic controller embedded system embedded PLC mechatronics education

来源：评论

学校读者我要写书评

暂无评论

Design of PLC-based Hydraulic System for Workpiece Turnover

Design of PLC-based Hydraulic System for Workpiece Turnover

引用

International Conference on Advanced in Control Engineering and Information Science (CEIS)

作者： Hong, Wang Weifang Univ Sch Mech & Elect Engn Weifang 261061 Peoples R China

Workpiece turnover is completed automatically by the automatic turnover device in automatic production line, Workpiece turnover device is an important part of automatic production line. Its hydraulic system was designed, its working principle was analysed, and the PLC control system was designed according to the control requirements to the hydraulic system of workpiece turnover. The Siemens PLC of SIMATIC S7-200 CPU266 was selected and a STEP7-Micro/WIN programming software was used to program the system control process. Using PLC control hydraulic system, can be very easy to meet process requirements, improve greatly the system stability, reliability, security and automation level. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of [CEIS 2011]

关键词： programmable logic controller hydraulic system PLC control system workpiece turnover device

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：