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Artificial Intelligence and Electromechanical Automation (AIEA), International Conference on

作者： Zhiming Wang Zhongsheng Li Qi Hua Dongdong Liu School of Mechatronics Engineering and Automation Shanghai University Shanghai China

ISBN: (数字)9781728182889

ISBN: (纸本)9781728182896

AGV is a kind of unmanned intelligent handling equipment. The accuracy of the trajectory motion control determines whether the car can adjust its position in real time according to the error and work according to the preset trajectory. In this paper, the kinematics model is first established, then the two-wheel speed is obtained by analyzing the relationship between the position deviation and speed deviation of the AGV, that is, the posture of the car can be adjusted by the wheel speed. Next a Siemens 1200 PLC's PID module is used to simulate its trajectory tracking, in which the PID parameters are determined by the optimization method. Finally, the correcting effect is compared, and the feasibility of using PID to adjust the trajectory deviation is verified.

关键词： AGV Modeling kinematics analysis PID control optimization method trajectory deviation Proportional Integral Derivative Control Kinematic analysis optimization method Automated guided vehicle systems Pelvic Inflammatory Disease programmable logic controllers positional variance trajectory Cars Proportional derivative control speed deviation

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Coloured Petri Net based PLC program validation with a fast simulation method

Coloured Petri Net based PLC program validation with a fast ...

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International Conference on Process Control

作者： Tamas Schne Tibor Holczinger Department of Computer Science and Systems Technology University of Pannonia

ISBN: (纸本)9781479909261

A Coloured Petri Net (CPN) based method for programmable logic Controller (PLC) program validation is proposed in this paper. It uses a simple fixed net structure and does not require the creation of different Petri Nets for every new PLC program. The base of the method is the so-called technology description and operation state table used in engineering practice. The CPN simulates the operation of the PLC and compares the resulted values to the desired ones. In the case of a difference it indicates the existence of an error. The method is capable of automatic program validation and safety analysis, which is demonstrated through the example of an oil tank system.

关键词： Petri nets analog approach programmable logic controllers Safety Analysis lower block Oil tanks

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Study of Communication between VFP and Mitsubishi FXSerial PLC

Study of Communication between VFP and Mitsubishi FXSerial P...

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2010 International Conference on E-Health Networking,Digital Ecosystems and Techonlogies(2010电子健康网络、数字生态系统和技术国际会议 EDT 2010)

作者： Jinjiao Zhang Binfang Wu School of Mechanical Engineering Hubei University of Technology Wuhan 430068 PR.China

ISBN: (纸本)9781424455140;9781424455157

This paper briefly introduces hardware connection, serial port settings, operation commands and control characters in the serial communication between computer and FX programmable logic controller (PLC) programming port, and it also presents in detail the message format, operation address and communication program written by Visual FoxPro(VFP) during four operations such as Force ON ,Force OFF, Read and Write.

关键词： VFP FX PLC Communication Communication Research control characters programmable logic controllers Communication Programs Force serial communication Surgery message format serial I/O Serial Publications logic controller

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An Intelligent Solution to In-Home Power Line Communication

An Intelligent Solution to In-Home Power Line Communication

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International Conference on Intelligent Computing, Automation and Systems (ICICAS)

作者： Yingxue Li Huaide Peng Boxuan Chang Xiaofeng Zhang Mengyuan Cheng Yongpeng Wu Jiangxi Economic Research Institute state STATE GRID Nanchang China Department of Electrical Engineering Shanghai Jiao Tong University Shanghai China

ISBN: (数字)9781728161068

ISBN: (纸本)9781728161075

This paper provides an intelligent solution to power line communication (PLC) by applying deep learning (DL) to the transmission system of PLC. To this end, we choose low voltage (LV) power line as a study case. Based on the channel measurement campaign on residential LV distribution areas in Ganzhou city, Jiangxi province, China, the in-home PLC channel is modeled as a multi-path channel. As for the noise model, we adopt the additive Middleton Class-A noise (AWCN) composed of impulsive and background noise. In order to combating this hostile PLC environment, a proprietary data encoder is recommended in the physical layer of the IEEE standard for broadband over power line networks. Accordingly, we design an intelligent data decoder combining deep neural network (DNN) and domain knowledge in decoding algorithms, able to learn and adapt the environment of PLC channel until achieving the optimal performance. The simulation results confirm the high-performance and low-complexity of the proposed decoder.

关键词： broadband networks carrier transmission on power lines decoding encoding IEEE standards impulse noise learning (artificial intelligence) neural nets power engineering computing carrier transmission on power lines Power engineering computing Neural network Broadband networks IEEE Standards Impulse noise DECODING programmable logic controllers coding Transmission systems Noise models line network

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Reconfigurable Elements of Execution Semantics for Industrial Cyber-Physical Systems

Reconfigurable Elements of Execution Semantics for Industria...

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Annual Conference of the IEEE Industrial Electronics Society

作者： Wenbin Dai Cheng Pang Valeriy Vyatkin Key Laboratory of System Control and Information Processing Ministry of Education of China and Department of Automation Shanghai Jiao Tong University China Cheng Pang Aalto University Finland

ISBN: (纸本)9781479917631

With the increasing computing power and network capacity, distributed automation systems are facing new challenges of handling massive amounts of distributed nodes within tight real-time constraints. The industrial cyber-physical systems is considered as the key to solve these complexities. In distributed industrial automation systems, there exists several execution semantics. In this paper, all existing execution semantics are summarized as a set of rules which are described by reconfigurable elements. During the simulation and verification of industrial cyber-physical systems, those rules are helpful to provide a generic runtime environment which can perform various execution semantics. This reconfigurable execution environment is demonstrated using a case study of a room lighting system.

关键词： Execution Semantics IEC 61499 Function Blocks Industrial Cyber-Physical Systems programmable logic controllers Reconfiguration programmable logic controllers Reconfiguration Legal Executions Semantics semiotics configurability automation system Operating Environment computational power Industrial network capacity

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Knowledge compilation languages as proof systems

arXiv

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arXiv 2019年

作者： Capelli, Florent Université de Lille Inria UMR 9189 - CRIStAL - Centre de Recherche en Informatique Signal et Automatique de Lille LilleF-59000 France

In this paper, we study proof systems in the sense of Cook-Reckhow for problems that are higher in the polynomial hierarchy than coNP, in particular, #SAT and maxSAT. We start by explaining how the notion of Cook-Reckhow proof systems can be apply to these problems and show how one can twist existing languages in knowledge compilation such as decision DNNF so that they can be seen as proof systems for problems such as #SAT and maxSAT. Copyright © 2019, The Authors. All rights reserved.

关键词： programmable logic controllers

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PLC NOISE AND IMPEDANCE MEASUREMENTS ON LOADS AND IN THE DISTRIBUTION GRID

PLC NOISE AND IMPEDANCE MEASUREMENTS ON LOADS AND IN THE DIS...

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International Conference and Exhibition on Electricity Distribution

作者： Rafael JAHN Dries LEMMENS Wim FOUBERT Stijn UYTTERHOEVEN LABORELEC

ISBN: (纸本)9781629931333

Power Line Communication is still one of the most popular ways to solve the last-mile problem in Smart Metering. The main drawbacks of this medium are the harsh circumstances in the grid. The unpredictability of noise and impedance in the grid makes it a difficult task to model the physical channel and therefore choose the right modulation technique for the job. In this paper noise and impedance measurements are executed. This leads to a classification of the different types of loads in function of the basic parameters influencing power line communication.

关键词： LOAD carrier transmission on power lines Characteristic impedance Noise impedance load type grids Grates critical parameter programmable logic controllers Grid computing jobs indium

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Complex PLDs approach FPGA architectures

Electronic Engineering Times

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Electronic Engineering Times 2005年第1381期 40-40页

作者： Cataldo, Anthony

Lattice semiconductor Corp. has launched MachXO, a family of programmable logic devices that marks a change in the way the company designs complex PLDs. Rather than make a CPLD based on macrocells that comprise product terms, lattice switched to four-input lookup table logic cells, which are usually associated with FPGAs. Macrocells have offered consistent performance for a range of functions implemented in CPLDs. By shifting to a more cost efficient architecture, Lattice is betting that MachXO will be received by systems companies looking for more registers and memory without having to switch to FPGAs.

关键词： programmable logic controllers

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A narrowband PLC modem design project for an international DSP course

A narrowband PLC modem design project for an international D...

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European DSP Education and Research Conference (EDERC)

作者： Carsten Roppel Faculty of Electrical Engineering University of Applied Sciences Schmalkalden Schmalkalden Germany

ISBN: (纸本)9781467345965

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.

关键词： signal processing algorithms Modems frequency shift keying Narrowband Desmoplakin Gene Digital signal processing algorithms programmable logic controllers FREQUENCY SHIFT Students

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Automatic Test Case Generation for PLC Programs using Coverage Metrics

Automatic Test Case Generation for PLC Programs using Covera...

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IEEE Conference on Emerging Technologies and Factory Automation

作者： Hendrik Simon Nico Friedrich Sebastian Biallas Stefan Hauck-Stattelmann Bastian Schlich Stefan Kowalewski Embedded Software Laboratory RWTH Aachen University ABB Corporate Research Germany

ISBN: (纸本)9781467379304

This paper presents a method for automatic test case generation for PLC software following the IEC61131-3 standard. The core component is a model checker that iteratively creates program traces, each of them covering a part of the program in terms of a coverage metric. These test cases are translated into Structured Text, a programming languages defined in the IEC61131-3, to allow the execution on a soft-PLC or the actual hardware. Our approach is evaluated on a set of function blocks that are used in industry. We demonstrate that test cases can be automatically generated within few seconds in most cases.

关键词： CASING INSPECTION Automatic testing programmable logic controllers Coverage Metronidazole Legal Executions

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