When creating distributed control systems, we can choose one of two possible approaches based on IEC 61131 and IEC 61499 standards. The first of them has been used for a long time in the PLC sphere, but it does not di...
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ISBN:
(纸本)9781467330053;9781467330046
When creating distributed control systems, we can choose one of two possible approaches based on IEC 61131 and IEC 61499 standards. The first of them has been used for a long time in the PLC sphere, but it does not directly support the creation of extensive distributed systems. The second of the standards, IEC 61499, offers a direct solution for distributed system creation. The truth is that it is a new standard, which is why it is supported by only a few device manufacturers. This raises the question of which approach and which standard is more effective and suitable for individual system designing.
We fabricated a DP-QPSK receiver PLC by the heterogeneous integration of eight highspeed PDs on a compact silica-based PLC platform with a PBS, 90-degree optical hybrids and a VOA. 32 Gbaud DP-QPSK signal demodulation...
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ISBN:
(纸本)9781557529503
We fabricated a DP-QPSK receiver PLC by the heterogeneous integration of eight highspeed PDs on a compact silica-based PLC platform with a PBS, 90-degree optical hybrids and a VOA. 32 Gbaud DP-QPSK signal demodulation was successfully demonstrated.
This work presents the direct method for studying the behavior of the drive for horizontal motion on gantry cranes and tower cranes in laboratory conditions. The developed and described laboratory setup enables the te...
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ISBN:
(纸本)9781467319720
This work presents the direct method for studying the behavior of the drive for horizontal motion on gantry cranes and tower cranes in laboratory conditions. The developed and described laboratory setup enables the testing of an algorithm for precise control over this drive, with the basic goal of eliminating swaying of the load. The most significant results obtained during the conducted tests are displayed at the end of the work.
We describe the design and implementation of a narrowband power line communications (PLC) modem. The modem uses frequency shift keying (FSK) and is implemented on a C6000 DSP. The use of FSK and the selected receiver ...
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ISBN:
(纸本)9781467345972;9781467345958
We describe the design and implementation of a narrowband power line communications (PLC) modem. The modem uses frequency shift keying (FSK) and is implemented on a C6000 DSP. The use of FSK and the selected receiver architecture allows for a simple and efficient implementation. The project is used in an international DSP course to introduce students to basic signal processing algorithms.
Using the Power Distribution Network (PDN) concurrently as a data bus with Power Line Communications (PLC) technology provides an interesting solution for reducing the complexity, weight and volume of electrical syste...
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ISBN:
(纸本)9781467317009
Using the Power Distribution Network (PDN) concurrently as a data bus with Power Line Communications (PLC) technology provides an interesting solution for reducing the complexity, weight and volume of electrical systems in commercial aircraft. The European Union project TAUPE has recently completed an investigation on the use of PLC in commercial aircraft. A Technology Readiness Level (TRL) of four was reached and significant weight and complexity savings were demonstrated. Extensive functional and performance tests have been performed for two cabin reference applications in a representative demonstrator. The measurements were performed with commercial off-the-shelf (COTS) PLC equipment based on a state-of-the-art industry standard. A detailed analysis of the results showed a number of deficiencies in applying COTS technology, which has been developed primarily for consumer in-home multimedia distribution, to avionics systems. This paper will provide an analysis of the deficiencies identified during testing as well as present a set of guidelines to aid the way forward for further development towards reaching a higher TRL with PLC which has become well established in the consumer market, but has yet to reach its full potential for avionics applications.
The paper introduces a discrete-event simulation-based decision supporting system aiming at automatically mirroring the current state of a large-scale material handling system of a production system in a digital model...
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ISBN:
(纸本)9781467347792;9781467347808
The paper introduces a discrete-event simulation-based decision supporting system aiming at automatically mirroring the current state of a large-scale material handling system of a production system in a digital model and supporting the analysis of diverse control settings and rules. The discrete-event digital model is built in an automated way and all the data necessary for the model are taken from a manufacturing execution system (MES) and additionally directly from programmable logic controllers (PLC). Main focus is given to present the results of the PLC program code processing method (code mapping) generating a structured dataset, as well as the model-reconstruction method for the simulation software. The easy-of-use support tool is intended to be used both in planning and operation phases of an automotive manufacturing company, thus the capabilities of model reconstruction and simulation are tested on real-world data.
One of the most widespread techniques to evaluate various aspects of an existing manufacturing system is discrete-event simulation (DES). However, building a simulation model of a manufacturing system needs great reso...
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One of the most widespread techniques to evaluate various aspects of an existing manufacturing system is discrete-event simulation (DES). However, building a simulation model of a manufacturing system needs great resource expenditures. Automated data collection and model buildup can drastically reduce the time of the design phase as well as support model reusability. Since most of the manufacturing systems are controlled by low level controllers they store structure and control logic of the system to be modeled by a DES system. The paper introduces an ongoing research of PLC code processing method for automatic simulation model generation of a conveyor system of a leading automotive factory. (c) 2012 The Authors. Published by Elsevier B.V. Selection and/or peer-review under responsibility of Professor D. Mourtzis and Professor G. Chryssolouris.
Transaction level (TL) models are key to early design exploration, performance estimation and virtual prototyping. Their speed and accuracy enable early and rapid System-on-Chip (SoC) design evaluation and software de...
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ISBN:
(纸本)9783981080186
Transaction level (TL) models are key to early design exploration, performance estimation and virtual prototyping. Their speed and accuracy enable early and rapid System-on-Chip (SoC) design evaluation and software development. Most devices have only register transfer level (RTL) models that are too complex for SoC simulation. Abstracting these models to TL ones, however, is a challenging task, especially when the RTL description is too obscure or not accessible. This work presents a methodology for automatically creating a TL model of an RTL memory controller component. The device is treated as a black box and a multitude of simulations is used to obtain results, showing its timing behavior. The results are classified into conditional probability distributions, which are reused within a TL model to approximate the RTL timing behavior. The presented method is very fast and highly accurate. The resulting TL model executes approximately 1200 times faster, with a maximum measured average timing offset error of 7.66%.
In this paper an approach to support the development process of closed-loop control software for programmable logic controllers (PLC) is shown. To enhance the development process, a fast and reliable data transfer bet...
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ISBN:
(纸本)9781467324212
In this paper an approach to support the development process of closed-loop control software for programmable logic controllers (PLC) is shown. To enhance the development process, a fast and reliable data transfer between different tools and models used during different design phases is realized by model transformation. A core model created using the Systems Modeling Language (SysML) and a corresponding model editor based on the Unified Modeling Language (UML) in combination with a newly realized model transformation from the SysML parametric diagram to the Simulink block diagram is used to integrate the information from different engineering tools and models involved during automation engineering design phases. Hence, a consistent process for the development of closed-loop control software is realized.
作者：
Riera, B.Annebicque, D.Gellot, F.Philippot, A.Benlorhfar, R.
UFR des Sciences Exactes et Naturelles Université de Reims Champagne-Ardenne Moulin de la Housse BP 1039 51687 Reims Cedex 2 France
IUT de Troyes 9 rue de Québec 10026 Troyes Cedex France
This paper presents an original approach of safe control synthesis of manufacturing systems. This approach is based on the use of a logic filter (placed at the end of PLC (programmablelogic Controller)) robust to con...
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