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TASK-CONFIGURATION OF A PEARL-BASED programmable controller FOR PROCESS AUTOMATION

CONTROL ENGINEERING PRACTICE 1995年第6期3卷 843-848页

作者： THIELE, G BEESTERMOLLER, HJ RENNER, L DORNO, M POPOVIC, D UNIV BREMEN INST AUTOMAT TECHNOL FB 1 POB 330440 D-28334 BREMEN GERMANY

This paper describes the configuration of real-time tasks using a PEARL-based programmable controller (''PEARL-PLC''). It will be shown that tasks can be consistently configured with function-blocks for logic, sequence and feedback control. Furthermore, the synchronization of cooperating tasks, controlling interdependent sub-processes, can also be configured using communication function-blocks based on Multicomputer-PEARL. Moreover, using the explicit task-scheduling offered by PEARL, the needed processor-time can be reduced to a conceptual minimum. Details of the configuration of a sequence-control task and a fuzzy-control task, the latter as a representative of a feedback-control task, are presented. Finally, trends of future developments of the ''PEARL-PLC'', e.g. the implementation of fault-tolerance, are pointed out.

关键词： programmable controller TASK CONFIGURATION PEARL-PLC APERIODIC TASK SCHEDULING SEQUENCE CONTROL TASK SYNCHRONIZATION FUZZY CONTROL

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HIGH IMPEDANCE MECHANICAL VENTILATOR FOR SMALL ANIMALS - USE OF programmable controller

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PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY 1992年第2期420卷 136-139页

作者： DOJAT, M HARF, A WALTON, C MACQUINMAVIER, I FAC MED CRETEIL DEPT PHYSIOLF-94010 CRETEILFRANCE FAC MED CRETEIL DEPT PHARMACOL CLINF-94010 CRETEILFRANCE

We built a simple high impedance ventilator, which generates a pattern of flow largely independent of respiratory mechanics, to mechanically ventilate anaesthetized small animals. The system includes a source of compressed gas with an electronic valve and a flow controller on the inspiratory side and a second valve on the expiratory side. The two valves are driven by a programmable controller. To assess the performance of this ventilator we measured the delivered tidal volume while the ventilator was connected to an external, gradually varying resistance. This resistance was progressively increased to simulate bronchoconstriction of the respiratory system. Comparison with a volume-controlled ventilator was made. The use of a programmable controller also allows control of different patterns of mechanical ventilation, such as end-inspiratory pause or the static pressure-volume relationship, which can be used to perform lung function tests. The system is a simple, versatile device allowing both reliable mechanical ventilation and lung function assessment in small rodents and is suitable for routine use in laboratories.

关键词： MECHANICAL VENTILATION FLOW VENTILATOR programmable controller LUNG FUNCTION TESTING

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Implementation of Networked Control Systems Using programmable controller Based Ethernet Network

Implementation of Networked Control Systems Using Programmab...

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International Conference of Information and Communication Technology (ICoICT)

作者： Ramadhan, Aris Murti, Muhammad Ary Yovita, Leanna Vidya Telkom Inst Technol IT Telkom Fac Elect & Commun Bandung Indonesia

ISBN: (纸本)9781467349925;9781467349901

This paper presents the implementation of networked control systems (NCS) to be applied in industrial automation by using the programmable controller as the platform controller based Ethernet network. The fast growing in ICT technology on recent era brings some essential progress to support the development of NCS becomes more reliable to be implemented especially for critical delay application in industrial automation. The experiment, which is to measure the delay on the control signal that occur, the control execution accuracy and the cycle time of the programmable controller, had been conducted in four phase from identifying component of NCS and its characteristics, designing NCS, taking simulation of process workflow and simulation of the network and implement to physical system. The delay measure by monitoring the status of communication port of programmable controller. The measurement of control execution accuracy took after observation of process of removing the box from conveyor. The programmable controller's cycle time measurement obtained by capturing the cycle time data from its memory. The experiment results shows that the latest programmable controller along with recent network protocols has capability to deal with the delay and traffic. Delay in the network could decrease the control execution accuracy. The best control accuracy performances occur when total delay in the network are less than 1 s. Thus, the critical delay < 1 s. In other hand, the traffic condition does not have any impact related to the cycle time.

关键词： Networked Control Systems (NCS) Industrial Automation programmable controller Ethernet network delay

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Task-configuration of a pearl-based programmable controller for process-automation

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Annual Review in Automatic Programming 1994年第C期18卷 115-120页

作者： Thiele, G Beestermöller, H.J Renner, L Dorno, M Popovic, D University of Bremen Institute of Automation Technology D-28334 Bremen FB 1 P.O.B 330440 Germany

This paper describes the configuration of real-time tasks using a PEARL-based programmable controller ("PEARL-PLC"). It will be shown that tasks can be consistently configurated with function-blocks for logic-, sequence- and feedback-control. Furthermore, the synchronization of cooperating tasks, controlling interdependent sub-processes, can also be configurated using communication function-blocks based on Multicomputer-PEARL. Moreover, using the explicit task-scheduling offered by PEARL, the needed processor-time can be reduced to a conceptual minimum. Details of the configuration of a sequence-control task and a fuzzy-control task, the last one as a representative of a feedback-control task, are presented. Finally, trends of future developments of the "PEARL-PLC", e.g. the implementation of fault-tolerance, are pointed out. © 1994.

关键词： aperiodic task scheduling fuzzy-control PEARL-PLC programmable controller sequence-control task-configuration task-synchronization

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Course Instructional Design of programmable controller Application and Practice Guided by Innovative Projects 41

Course Instructional Design of Programmable Controller Appli...

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第41届中国控制会议

作者： Dong Li Wenda Yu Liting Fan Lixiu Zhang Yuanyuan Zou Defang Zou Zhenpeng Liu School of Mechanical Engineering Shenyang Jianzhu University

ISBN: (数字)9789887581536

ISBN: (纸本)9781665482561

Guided by the school's characteristic revitalization strategy,aiming at the difficulty for students to use the learned theory of programmable control technology to solve the control problems of complex mechanical system in the practice of precast concrete components(PC components),the curriculum design of programmable controller application and practice is carried *** the scientific research results obtained by the team in the production industry of PC components as an innovative project case,the knowledge and ability of graduated college students for completing similar projects is *** this basis,the teaching content design of the programmable controller application and practice course is carried *** the training goals of graduation ability of international engineering education certification,the goals are sorted out in this *** course teaching methods are designed so that students could better grasp the teaching contents of the course through the classroom.

关键词： Innovative project programmable controller Instructional design

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DESIGNING THE HARDWARE AND SOFTWARE OF THE PACIFIC HVDC INTERTIE REMEDIAL ACTION SCHEME USING A programmable controller

DESIGNING THE HARDWARE AND SOFTWARE OF THE PACIFIC HVDC INTE...

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TRANSMISSION AND DISTRIBUTION CONF OF THE IEEE POWER ENGINEERING SOC

作者： BHUIYAN, MR TAYLOR, AE KEZMAN, NC

The thoughts and processes during the design of the Pacific HVDC Intertie Remedial Action Scheme using a programmable controller are presented. Hardware and software design aspects are presented. Reliability considera... 详细信息

ISBN: (纸本)0780302192

关键词： PACIFIC HVDC INTERTIE REMEDIAL ACTION SCHEME programmable controller LADDER LOGIC WATT TRANSDUCER RELIABILITY AND AVAILABILITY TEST BIPOLE BLOCK

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Arithmetic and Comparison Operations for Ladder Diagram Based programmable controller 1

Arithmetic and Comparison Operations for Ladder Diagram Base...

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1st IEEE International Conference on Recent Advances in Electronics and Communication Technology (ICRAECT)

作者： Shobha, S. Rekha, K. R. Nataraj, K. R. Cambridge Inst Technol Bengaluru India SJB Inst Technol Bangalore Karnataka India

ISBN: (纸本)9781509067015

programmable controller is a prominent technology used for automation of industrial process controls. Ladder diagrams are specialized schematics, predominantly used in industries. Various tasks performed by Ladder diagram programming for programmable controllers are Boolean logic, timing, counting, shifting, arithmetic and comparison operations. This paper proposes arithmetic and comparison operations using ladder diagrams for programmable controller. Test benches have been written to validate the design modules using Model Sim.

关键词： programmable controller Ladder Logic RTL FPGA and Xilinx

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Application　of　programmable　controller　in　a　Rail　Welding　Machine

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Journal of Modern Transportation 1997年第1期14卷 80-85页

作者： Dai Hong Department of Materials Engineering, Southwest Jiaotong University, Chengdu 610031, China Xiang Junjie Long Zhuohong Chengdu Rail Welding Factory, Chengdu 610037, China

An innovation is conducted on a K190πK rail auto welding machine because of its poor stability in quality of welding joints. A new control system based on a programmable controller is designed to replace the old one. The new control system is of higher accuracy in controlling sequence and good ability in anti disturbance, and is convenient to operate. The comparison tests are carried out. The experimental results show that the quality of welded joints is greatly increased by the improved welding mechine.

关键词： rail welding maching programmable controller control system quality of welding joint

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Task-Configuration of a Pearl-Based programmable controller for Process-Automation

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IFAC Proceedings Volumes 1994年第6期27卷 115-120页

作者： G. Thiele H.-J. Beestermöller L. Renner M. Dorno D. Popovic University of Bremen Institute of Automation Technology FB 1 P.O.B 330440 D-28334 Bremen Germany

This paper describes the configuration of real-time tasks using a PEARL-based programmable controller (“PEARL-PLC”). It will be shown that tasks can be consistently configurated with function-blocks for logic-, sequence-, and feedback-control. Furthermore, the synchronization of cooperating tasks, controlling interdependent sub-processes, can also be configurated using communication function-blocks based on Multicomputer-PEARL. Moreover, using the explicit task-scheduling offered by PEARL, the needed processor-time can be reduced to a conceptual minimum. Details of the configuration of a sequence-control task and a fuzzy-control task, the last one as a representative of a feedback-control task, are presented. Finally, trends of future developments of the “PEARL-PLC”, e.g. the implementation of fault-tolerance, are pointed out.

关键词： programmable controller task-configuration PEARL-PLC aperiodic task scheduling sequence-control task-synchronization fuzzy-control

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Automatic Generation of Fault Detection Models for programmable controller Based Manufacturing Systems Using Complementary-Places Petri Nets

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IFAC Proceedings Volumes 1996年第1期29卷 6620-6625页

作者： Itsuo Hatono Kenji Baba Motohide Umano Hiroyuki Tamura Department of Systems Engineering Faculty of Engineering Science Osaka University Toyonaka Osaka 560. JAPAN

This paper describes a method of generating CPN (Complementary-Places Petri Nets) models of fault detection for manufacturing systems controlled by PC (programmable controller) automatically. To generate the fault detection model, we use two kinds of information: logging data of limit switches and ladder programs. By using the generated model, we can detect failures in the PC based manufacturing systems. Furthermore, we evaluate the obtained model by computer simulations.

关键词： Fault diagnosis programmable controller Ladder Programs Complementary-Places Petri Nets

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