Intelligent System Development, Veysel Gazi, Mathew Moore et al. · 1998
The National Institute of Standards and Technology #NIST# has been developing the #Real-Time Control Systems #RCS#" software for more than two decades and using it for the design and implementation of complex intelligent control systems. Present applications of RCS include mining, manufacturing, robotics, and autonomous vehicles. In this paper we summarize the e#orts at Ohio State Universitytodevelop an educational program for the NIST RCS that includes classroom instruction, a strong laboratory component #complete with small-scale RCS implementations #, and a software handbook.
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Bettendorf, R. · SHAREOK (University of Oklahoma; Oklahoma State University; Central Oklahoma University) · 2019
It is a common practice in the paper industry to verify large portions of the control system software during machine commissioning. This is inefficient since the verification is done under production conditions when time is limited and delays are costly. The reason for this practice is that the machine, the drives, and other equipment are not integrated before installation and therefore no trial runs can be made with a web.
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L. Haynes, Albert J. Wavering · Zenodo (CERN European Organization for Nuclear Research) · 1986
The National Bureau of Standards Center for Manufacturing Engineering is currently conducting research to help define interface and data format standards necessary to support the factory of the future. In support of this goal, NBS has implemented an experimental factory, called the Automated Manufacturing Research Facility (AMRF). The evolution of the AMRF has included the development of a Real-Time Control System (RCS) to direct robot motions according to high-level commands received from a supervisory workstation controller and environmental data obtained by local sensors. During the development of RCS, it became clear that large-scale software for real-time control is fundamentally different, and in some aspects, more complex than that intended for scientific or business applications. Specifically, software designed for control purposes must contend with a large number of non-deterministic states which complicates program synthesis and makes testing and debugging extremely difficult. This paper discusses these problems, and how they are addressed by RCS.
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Jean-Michel Ayache, Jean-Pierre Courtiat, M. Díaz et al. · IFAC Proceedings Volumes · 1982
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B.L. Luk, A.A. Collie, John Billingsley et al. · 1992
This paper describes the structure of the real time control software system for NERO wall climbing robots which were commissioned by Nuclear Electric plc. The NERO robot is driven remotely by an operator via a control console. The status of the robot and the control console is displayed on the console’s PC monitor. In order to ensure the information on the screen is up-to-date, a multitasking facility is included. This allows the software system to control the robot's movement and at the same time interrogate all the essential sensors.
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Lijun Liu · Shenyang Gongye Daxue xuebao · 2001
The real -time interactive simulation software of a process control systemis a computer programwhich can simulate the process control system' s running and show the whole system an d its statuses graphically on the screen.All the system' s possible disturbances,the types o f controller,and the relevant param eters of the con-troller can be chosen or set easily wi th a mouse by the software' s user.The usage of this simulation s oftware is e-quivalent with doing experiments on a real process control system,there fore it can significantly increase l earning and training efficiency,decrease i ts cost.With learning to design this kind of simulation software,Studen ts also have opportunity to develop a thorou gh understanding about the analysis and design of systems,and learn to im-plement programming language VB6.0or VC ++6.0to the system' s design.
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Speth Raymond, Leonard F. Dubuque · 2002
The authors outline requirements for the development of statistical process control software that can be effectively utilized by manufacturing operators with limited computer experience and statistical knowledge. Topics that contribute to the application's success, such as customer education, balance between the statistician and manufacturing-operator needs, flexibility to change in the working environment, and customer feedback, are discussed. Creation of chart parameters, data entry, and chart viewing are also considered.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Pabst, Arthur F., Peters, John C., Technical Conference on Mitigation of Natural Hazards through Real-Time Data Collection and Hydrological Forecasting (1983 : Sacramento, Calif.) · The Journal of the Abraham Lincoln Association
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Nicholas Constantinides · Open University of Cape Town (University of Cape Town) · 1987
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Dong Kai-che · 2013
To test the control performance of attitude control software in real time for a micro-nano satellite under hardware limited,a real-time testing system for the attitude control software of micronano satellite was established and the control software was tested with the proposed system.Based on the dynamics and kinematics of satellite attitude,the environment information of satellite trajectory,and the mathematical model of an attitude control algorithm,a flight imitation platform for the micronano satellite was developed on a PC.Then,the efficient communication link between on-board computer and PC was established by a Controller Area Network(CAN)and serial communication.The main program of the attitude control software was also modified as required.Finally,the real-time control performance of the attitude control software for on-board computer was tested with the realtime testing system.Experimental results indicate that the attitude control software can complete the initial control stage and enter the bias three-axis stabilization mode by 18 446safter the separation of satellite and rocket,which achieves the stabilization control of micro-nano satellite attitude.In the bias three-axis stabilization mode,the minimum one-axis attitude accuracy and the angular velocity stability of the satellite are within±1.86°and±0.048(°)/s,respectively,which meets the requirements of attitude accuracy and converge time of the control mode.
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Ömer Barış Özlüoymak, Ali Bolat, Ali Bayat et al. · DergiPark (Istanbul University) · 2017
Advances in different technologies,such as high-resolution vision systems, innovative sensors and embeddedcomputing systems, are finding direct application in agriculture. In precisionfarming, image analysis techniques can aid farmers in herbicide applications,and thus lower the risk of soil and water pollution by reducing the amount ofchemicals applied. Optical sensors and computer vision, which can be used inautomated weed detection and control spray systems, are being used in recentyears extensively. A real-time auto tracking and determination system for weeddetection and spray on/off were designed, built and set up in the laboratory atthe Department of Agricultural Machinery and Technologies Engineering ofÇukurova University. In this study; to get the target images, a web camera,mounted at a height of 50 cm above the target object was used. During the startof the weed tracking operation, the web camera captured images of theartificial weeds. Developed software, which could be reprogrammed and adjustedaccording to the user preference, was created by using LabVIEW. Weed coveragewas determined from each image by using a “greenness method” in which the red,green, and blue intensities of each pixel were compared. The sprayer nozzle wasturned ‘on’ or ‘off’ by using a data acquisition card and a relay card,depending on the green color pixels of weeds. The sprayer valve opened thenozzle when the camera detected the presence of weeds. Image processingperformance of this system, in where nozzle and camera were mounted at astationary position while weeds were on a movable belt, was tested at thedifferent speeds of conveyor belt consisted of an inverter drive system and 3phase 4 pole electric motor. The laboratory performance evolution revealed thatthe system could detect the weeds successfully and could be used to decreasethe herbicide quantity.
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2008
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MA Yinyuan,WANG Hujun,ZHANG Wei · SHILAP Revista de lepidopterología · 2016
The control tasks without sequential properties in the control software of mechatronic system can not be clearly presented by monogamous statecharts model.According to the characteristics of tasks in real-time multi-task control system,tasks without sequential properties are introduced in the model and the statecharts model of the control software is expended.The expended model is comprised of sequential control tasks,asynchronous concurrency control tasks,cycle control tasks and global real-time control tasks.To implement the expanded model,each task in the model is encapsulated in function block.Function blocks are scheduled by their enable bits.Application result shows that the proposed modeling extension and implementation method reduce coupling between mission control modules and complex of control software,improve the real-time of mechatronic control system through task scheduling,and in a example control system,the cycle time of the software develop by introducing modeling and implementation method is 1 ms~2 ms while the cycle time of previous software is 2 ms~3 ms.
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Borut Zupančič · Simulation Practice and Theory · 1998
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Broesch, J. D., Penaflor, B. G., Coon, R. M. et al. · University of North Texas Digital Library (University of North Texas) · 1996
This paper describes the real time, multi-tasking, multi-user software and communications of the E-Power Supply System Integrated Controller (EPSSIC) for the DIII-D tokamak. EPSSIC performs the DIII-D system wide go/no-go determination for the plasma sequencing. This paper discusses the data module handling, task work load balancing, and communications requirements. Operational experience with the new EPSSIC and recent improvements to this system are also described.
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Boyan Karakolev · RePEc: Research Papers in Economics · 2019
Traffic problems are inherent to urban movement worldwide. Effective management of traffic control devices is the main instrument for dealing with these problems. The aim of this article is to suggest a model of a software product for real-life traffic light control and thus optimize traffic. Designing the model and its practical implementation would inevitably result in reducing traffic jams and cutting the time motorists spend behind the wheel. This in turn would lead to considerable economic and environmental benefits for the population of the city.
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Eldrich Rebello, Luigi Vanfretti, Muhammad Shoaib Almas · KTH Publication Database DiVA (KTH Royal Institute of Technology) · 2015
Low-frequency, electromechanically induced, inter-area oscillations are of concern in the continued stability of inter-connected power systems. Wide Area Monitoring, Protection and Control (WAMPAC) systems based on wide-area measurements such as synchrophasor (C37.118) data can be exploited to address the inter-area oscillation problem. This work develops a hardware prototype of a synchrophasor-based oscillation damping control system. A Compact Reconfigurable Input Output (cRIO) controller from National Instruments is used to implement the real-time prototype. This paper presents the design process followed for the development of the software architecture. The design method followed a three step process of design proposal, design refinement and finally attempted implementation. The goals of the design, the challenges faced and the refinements necessary are presented. The design implemented is tested and validated on OPAL-RT's eMEGASIM real-time simulation platform and a brief discussion of the experimental results is included.
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Artem V. Osintsev, Alexander A. Sobko, Maxim E. Komnatnov · 2016
The paper considers design of environmental shielded TEM-chamber. Block diagrams of temperature controller software with a real-time operating system (RTOS) are demonstrated. Test software has been developed and tested in the control board of a temperature controller of a TEM-chamber. The paper contains the results of a multiphase PWM signal conditioning controlled via mRTOS in cooperative mode.
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W. Treutterer, K. Behler, A. Lohs et al. · 2003
The toroidal magnetic confinement experiment ASDEX Upgrade investigates hot plasma performance and scalings in preparation of a thermonuclear fusion reactor. A new distributed real-time control has been designed for the device based on PCs and workstations under VxWorks and Solaris. As scientific progress requires frequent modification of algorithms, the system must provide flexibility to select specific sets of application processes (AP) and place these on target processors providing the necessary performance. For efficient information exchange between APs a shared memory layer for real-time signals, consisting of local ring buffers and shared memory hardware, has been developed which encapsulates signal routing and administration. The universal approach with free allocation of APs onto target processors combined with transparent real-time signal communication provides a flexible, reliable and efficient runtime infrastructure for general purposes.
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Krzysztof Błachut, Hubert Szolc, Mateusz Wąsala et al. · 2020
In this paper we present a vision based hardware-software control system enabling autonomous landing of a mul-tirotor unmanned aerial vehicle (UAV). It allows the detection of a marked landing pad in real-time for a 1280 x 720 @ 60 fps video stream. In addition, a LiDAR sensor is used to measure the altitude above ground. A heterogeneous Zynq SoC device is used as the computing platform. The solution was tested on a number of sequences and the landing pad was detected with 96% accuracy. This research shows that a reprogrammable heterogeneous computing system is a good solution for UAVs because it enables real-time data stream processing with relatively low energy consumption.
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