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International Conference on Advanced Design and Manufacturing Engineering (ADME 2011)

作者： Yu, Fengwei Sun, Hongying Qingdao Ocean Shipping Mariners Coll Qingdao Shandong Peoples R China

ISBN: (纸本)9783037852163

Automatic synchronization is one of the important functions of marine power station management system. Grasping of ACB (air circuit breaker of generator) closing opportunity is the difficult and key point of automatic synchronization control. This paper offers a rapid and simple method of automatic synchronization control based on PLC and emphasizes on discussing a new method of grasping ACB closing opportunity in synchronization control. The system researched makes the best use of the computing function of PLC program and reduces the hardware as possible to improve the reliability and economical efficiency. Similar triangle principle and a new timing mode based on PLC scan cycle are adopted in grasping ACB closing opportunity. Several years of operation in training lab proved that the automatic synchronization system is reliable and steady.

关键词： Marine Power Station Automatic Synchronization Circuit Breaker Closing Opportunity programmable logic controller

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CONSIDERATIONS IN NETWORK AND AUTOMATION OPTIONS FOR LOW-VOLTAGE MOTOR CONTROL CENTERS

CONSIDERATIONS IN NETWORK AND AUTOMATION OPTIONS FOR LOW-VOL...

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Annual IEEE Pulp and Paper Industry Technical Conference (PPIC)

作者： Feldmeier, Gerry Zantout, Firas Durocher, David B. Eaton Corp 4201N 27th St Milwaukee WI 53216 USA Essroc Italcementi Grp Martinsburg WV 25401 USA Eaton Corp Wilsonville OR 97070 USA

ISBN: (纸本)9781612842714

The wide spread utilization of industrial communication networks in industrial applications for Low-Voltage Motor Control Centers (LV MCC's) started in 1995 when Open DeviceNet Vendors Association (ODVA) was formed and an open standard for DeviceNet was developed. The main value proposition behind networks was wire savings and reduction of downtime, both quantifiable and tangible benefits, as well as many non-tangible metrics such as data richness and diagnostics. Today there are many types of industrial networks available. These networks provide connectivity from working equipment to upstream supervisory programmable logic controllers (PLCs), Distributed Control Systems (DCS) in process environments, or Supervisory Control & Data Acquisition (SCADA) systems which usually also employ an operator interface (OI) for control and monitoring. When an advanced communicating system is employed, facilities typically need personnel proficient in network installation and diagnostics, supervisory control programming, device programming and OI design, thus requiring a more technical resource than a traditional hard wired system. It is the intent of this paper to timeline industrial networks past and future, inform the reader of current standards for equipment control and automation, and to share how the industry is adapting to support these emerging challenges.

关键词： Communication cables Connectors Media Network topology Open DeviceNet Vendors Association SCADA SCADA systems Supervisory Control and Data Acquisition systems Switches Topology Wires automation option distributed control system equipment automation equipment control industrial communication network industrial network low-voltage motor control center machine control network installation operator interface programmable controllers programmable logic controller supervisory control programming voltage control

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Application of PLC and Human-Machine Interface on Screening Equipment

Application of PLC and Human-Machine Interface on Screening ...

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2011 International Conference on Informatics,Cybernetics,and Computer Engineering(ICCE 2011)

作者： Liu Wei-Sheng Department of Physics Tang Shan Teachers College

ISBN: (纸本)9783642251870

The article introduces a screening control system consisting of programmable logic controller and human-machine interface(HMI).It discusses the structural characteristic of the control *** describes the hardware components and overall design,and it also provides the program design *** system uses PLC industrial control technology and network technology to achieve the control of the multiple high frequency screen and multi-exciter *** Touch Screen(HMI) design provides a graphical user interface and creates a good operating environment for the *** control system is flexible,simple and stable.

关键词： programmable logic controller human-machine interface control system

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Improvement of photovoltaic pumping systems based on standard frequency converters by means of programmable logic controllers

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SOLAR ENERGY 2010年第1期84卷 101-109页

作者： Fernandez-Ramos, Jose Narvarte-Fernandez, Luis Poza-Saura, Fernando Univ Malaga Dept Elect E-29071 Malaga Spain Univ Politecn Madrid IES E-28040 Madrid Spain

Photovoltaic pumping systems (PVPS) based on standard frequency converters (SFCs) are Currently experiencing a growing interest in pumping programmes implemented in remote areas because of their high performance in terms of component reliability, low cost, high power range and good availability of components virtually anywhere in the world. However, in practical applications there have appeared a number of problems related to the adaptation of the SFCs to the requirements of the photovoltaic pumping systems (PVPS). Another disadvantage of dedicated PVPS is the difficulty in implementing maximum power point tracking (MPPT). This paper shows that these problems can be solved through the addition of a basic industrial programmable logic controller (PLC) to the system. This PLC does not increase the cost and complexity of the system, but improves the adaptation of the SFC to the photovoltaic pumping system, and increases the overall performance of the system. (C) 2009 Elsevier Ltd. All rights reserved.

关键词： PV pumping Frequency converter programmable logic controller

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programmable logic controller system for controlling and monitoring home application using mobile network

Programmable logic controller system for controlling and mon...

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23rd IEEE Instrumentation and Measurement Technology Conference

作者： Alheraish, A. Alomar, W. Abu-Al-Ela, M. King Saud Univ Dept Elect Engn POB 375529 Riyadh 11335 Saudi Arabia

ISBN: (纸本)9780780393592

Controlling and monitoring the machines remotely is an important field of study these days. Since we are living in the mobile communication evolution, some researches study the methodology of implementing a communication system that can be used by the machines. This paper designs a control system that allows to the user to control and monitor the machine by using the mobile phone network.

关键词： programmable logic controller machine automation GSM home security microcontroller

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A Design Pattern for translating UML software models into IEC 61131-3 Programming Languages

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IFAC Proceedings Volumes 2011年第1期44卷 9158-9163页

作者： Cesare Fantuzzi Cristian Secchi Marcello Bonfè University of Modena and Reggio Emilia Via Amendola 2 42122 Reggio Emilia (Italy) University of Ferrara Via Saragat 1 44100 Ferrara (Italy)

Abstract The paper deal with a deep analysis and application of object-oriented methodologies for the design process of industrial machine controllers. The process pass thought the phases of (1) conceptual model development of the software artifacts, and (2) model code deployment for the automation system target, which is in general a programmable logic controller (PLC) compliant with the international standard IEC 61131-3 for programming languages. The paper describes a design pattern for the software conceptual model deployment, with a particular emphasis on practical requirements enforced by PLC of different brands. In fact, IEC 61131-3 compliance provides a common “look-and-feel” for programming languages, but does not guarantee straightforward code portability between different PLC vendors. The paper has a great focus on applications and provides an example, based on a generic flow-pack machine, to better explain the proposed methodology.

关键词： manufacturing control oriented models programmable logic controller controlling machines finite state machine

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PLC based peak load control for chemical industries

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WORLD JOURNAL OF ENGINEERING 2011年第1期8卷 35-43页

作者： Mohan, L. Ashok, S. Natl Inst Technol Calicut Dept Elect Engn Calicut 673601 Kerala India Calicut Kerala Calicut 673601 Kerala India

Chemical processes, employed for manufacturing basic chemicals are highly energy intensive. Due to escalating costs of fossil fuels and capacity addition, the electricity cost has been increasing for the last few decades. Electricity intensive industries find it very difficult to cope up with higher electricity charges particularly with time-of-use (TOU) tariffs implemented by the utilities with the objective of flattening the load curve. Load management programs focusing on reduced electricity use at the time of utility's peak demand, by strategic load shifting, is a viable option for industries to reduce their electricity cost. This paper presents an optimization model and formulation for load management of continuous process industries. The case study of a chemical industry is taken for conducting load management study. The formulation utilizes nonlinear programming technique for minimizing the electricity cost and reducing the peak demand, by rescheduling the loads, satisfying the industry constraints. Development of a generalized graphical user interface (GUI) in Visual Basic for implementing load management actions in industries and testing the GUI with the case study are done. Real time implementation of load management actions using programmable logic controller (PLC) is also investigated.

关键词： Load management Load scheduling Time-of-use tariff Graphical user interface programmable logic controller

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Invoking Web Services from programmable logic controllers

Invoking Web Services from Programmable Logic Controllers

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15th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Stoidner, Christoph Freisleben, Bernd Univ Marburg Dept Math & Comp Sci D-35032 Marburg Germany

ISBN: (纸本)9781424468508

The adoption of service-oriented architectures based on web services in industrial application domains enables the seamless integration of business software with manufacturing tasks and promises increased interoperability. To be able to invoke a manufacturing task running on a programmable logic controller (PLC) as a web service from a business application, the SOAP4PLC engine has been proposed. In this paper, an extension of the SOAP4PLC engine is presented to invoke a web service based business application from a PLC application. A use case is shown in which the extended SOAP4PLC engine is used to interface a PLC application concerned with realizing the functionality of a charging station for electrical vehicles with a web service based accounting system.

关键词： S0AP4PLC engine Web service based accounting system Web services business software electrical vehicle manufacturing processes open systems programmable controllers programmable logic controller service oriented architecture software architecture

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Design of PLC-based Hydraulic System for Workpiece Turnover

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Procedia Engineering 2011年 15卷 122-126页

作者： WANG Hong School of Mechanical and Electronic Engineering Weifang University Weifang 261061 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.

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

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Web-based modules for programmable logic controller education

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COMPUTER APPLICATIONS IN ENGINEERING EDUCATION 2006年第4期13卷 266-279页

作者： Hsieh, SJ Hsieh, PY Texas A&M Univ Dept Engn Technol College Stn TX 77843 USA Texas A&M Univ Dept Mech Engn College Stn TX 77843 USA Texas A&M Univ Syst Off College Stn TX 77845 USA

This study describes the Virtual programmable logic controller (Virtual PLC), a web-based system for PLC education that consists of (1) educational simulations to help students visualize abstract concepts, practice programming and device interfacing skills, and understand problem-solving processes;and (2) a simple intelligent tutoring system. Results from two preliminary evaluations are also presented. Index Terms-PLC, intelligent tutoring system, simulation, manufacturing engineering education. (c) 2005 Wiley Periodicals, Inc. Comput Appl Eng Educ 13: 266-279, 2005;Published online in Wiley InterScience (***. com);DOI 10.1002/cae.20052

关键词： programmable logic controller intelligent tutoring system simulation manufacturing engineering education

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