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Cichos, Daniel, Patrick Kölsch und Jan Christian Aurich. „Concept for Planning and Controlling of Multiple, Parallel Engineering Changes in Manufacturing Systems“. Advanced Materials Research 1140 (August 2016): 497–504. http://dx.doi.org/10.4028/www.scientific.net/amr.1140.497.
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Manufacturing companies have to adapt existing factories due to changing customer demands and new technologies. The coordination of several engineering changes in manufacturing systems is a key factor for the efficiency of their implementation. In this paper, a concept for planning and controlling of multiple engineering changes is presented. The concept includes the preselection, planning and execution of engineering changes. The engineering changes can be classified with regard to their relevance and urgency. The needed work steps for the implementation are deduced from the software-based planning and the time schedule for the work steps is created. The work steps are monitored while executing and events are initiated, if necessary. The concept is implemented in a software demonstrator and validated through this software.
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Tkachuk, Nikolay V. „Concept of Integrated Environment of Reengineering for Complex Informating-Controlling Systems“. Journal of Automation and Information Sciences 35, Nr. 2 (2003): 1–8. http://dx.doi.org/10.1615/jautomatinfscien.v35.i2.10.
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Ohtsuki, T., T. Kawazoe und T. Masui. „Intelligent control system based on blackboard concept for wastewater treatment processes“. Water Science and Technology 37, Nr. 12 (01.06.1998): 77–85. http://dx.doi.org/10.2166/wst.1998.0506.
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An intelligent control system for wastewater treatment processes has been developed and applied to fullscale, high-rate, activated sludge process control. In this control system, multiple software agents that model the target system using their own modeling method collaborate by using data stored in an abstracted database named ‘blackboard’. The software agents, which are called ‘expert modules’, include a fuzzy expert system, a fuzzy controller, a theoretical activated sludge model, and evaluators of raw data acquired by various online sensors including a respirometer. In this paper, the difficulties of controlling an activated sludge system by using a single conventional strategy are briefly reviewed, then our approach to overcome these difficulties by using multiple modeling methods in the framework of an ‘intelligent control system’ is proposed. Case studies of applications to a high-rate activated sludge process that treats BOD and nitrogen of human excrement are also presented.
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Dodevska, Zorica, Vladimir Kvrgic, Marko Mihic und Boris Delibasic. „The concept and application of simplified robotic models“. Serbian Journal of Electrical Engineering 16, Nr. 3 (2019): 419–37. http://dx.doi.org/10.2298/sjee1903419d.
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The use of robotic models with the main functionalities of real objects together with the implementation of innovative technologies, augmented reality (AR) in this case, is the focus of the paper. Therefore, the concept of a simplified robotic model (SRM) is presented. This concept is important because it is useful for achieving the goals of engineering projects, which is especially justified prior to the construction of the real objects. It improves presentation, development, and education capabilities that are unavoidable segments of the project strategy. Additionally, it is possible to transfer developed solutions to the final objects after certain modifications. Multidisciplinary building of the unique SRM of the 3-axis centrifuge for pilot training is described, where multi-attribute decisionmaking is used to conduct some experiments. The application includes the use of a physical model, built from LEGO elements, software for controlling and monitoring the physical model, and an AR mobile app.
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Li, Shan Shan, Peng Wang, Xu Han, Jin Feng Liu und Xiao Gang Zhou. „Investigation of Ventilation Monitoring and Controlling System for Supercavitation Experiment in the Water-Tunnel Based on Configuration Software“. Applied Mechanics and Materials 556-562 (Mai 2014): 3219–22. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.3219.
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The supercavitation weapon is a new concept weapon moving at a high speed underwater, which is devised applying the characteristic of supercavitation reducing the resistance of water, and it may be widely used in the future. The present ventilating system has many shortcomings, such as less automation and numerous data cannot be measured and recorded timely. In this paper, the automatic monitor and control ventilating system of supercavitation water-tunnel was developed using configuration software and PLC. All parameters can be measured, recorded and displayed automatically via using of the system. It has many advantages such as higher automation, convenience, and easy maintenance.
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Magaña, A., und G. Prof Reinhart. „Herstellerneutrale Programmierung von Robotern*/Manufacturer-independent programming of robots - A software architecture concept for controlling and programming heterogeneous robotic systems“. wt Werkstattstechnik online 107, Nr. 09 (2017): 594–99. http://dx.doi.org/10.37544/1436-4980-2017-09-32.
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Industrieroboter sind zu einer Schlüsseltechnologie in der Produktion geworden. Mit dem steigenden Einsatz von diversen Robotersystemen wächst das Bedürfnis, deren Kompatibilität zu steigern. Heutzutage gibt es keine Technologie in der Industrie, die eine standardisierte Programmierung und Steuerung von verschiedenen Robotersystemen gewährleisten kann. Dieser Fachbeitrag präsentiert ein einheitliches Konzept, welches die Anwendung von herstellerneutralen Roboterapplikationen ermöglicht. Industrial robots have become a key technology in production. The increasing use of various robotic systems, raises the need to enhance their compatibilit.y Nowadays, there is no technology in the industry to guarantee a standardized programming and control of different robot systems. This article presents a concept enabling the use of manufacturer-independent robot applications.
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GUPTA, ANSHU, REECHA KAPUR und P. C. JHA. „CONSIDERING TESTING EFFICIENCY AND TESTING RESOURCE CONSUMPTION VARIATIONS IN ESTIMATING SOFTWARE RELIABILITY“. International Journal of Reliability, Quality and Safety Engineering 15, Nr. 02 (April 2008): 77–91. http://dx.doi.org/10.1142/s0218539308002940.
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Advances in software technologies have promoted the growth of computer-related applications to a great extent. Building quality in terms of reliability of the software has become one of the main issues for software developers. Software testing is necessary to build highly reliable software. Monitoring and controlling the resource utilization, measuring and controlling the progress of testing, efficiency of testing and debugging personals and reliability growth are important for effective management the testing phase and meeting the quality objectives. Over the past 35 years many Software reliability growth models (SRGM) are proposed to accomplish the above-mentioned activities related to the software testing. From the literature it appears that most of the SRGM do not account the changes in the testing effort consumption. During the testing process especially in the beginning and towards the end of the testing frequent changes are observed in testing resource consumption due to changes in testing strategy, team constitution, schedule pressures etc. Apart from this testing efficiency plays a major role determining the progress of the testing process. In this paper we incorporate the important concept of testing resource consumption variations for Weibull type testing effort functions and testing efficiency in software reliability growth modeling. The performance of the proposed models is demonstrated through two real life data sets existing in literature. The experimental result shows fairly accurate estimating capabilities of the proposed models.
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Sakr, Aziz, und Zoltán Orbán. „Controlling the failure behavior of FRP-reinforced concrete elements“. Pollack Periodica 16, Nr. 1 (25.03.2021): 38–44. http://dx.doi.org/10.1556/606.2020.00168.
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AbstractConcrete indeterminate flexural members represented by continuous beams reinforced with both fiber-reinforced polymers and steel bars in a way that allows for moment redistribution at failure are analyzed. The efficiency of introducing steel bars in the critical sections where plastic hinges are likely to form is evaluated in terms of reliability. Monte Carlo simulation and the concept of comparative reliability are both employed. Ultimately, the effect of different design parameters on the strength reduction factor is evaluated.
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Rajeev Kumar, M., N. K. Senthil Kumar und D. Balaji. „Franchise and retail management system“. International Journal of Engineering & Technology 7, Nr. 2.20 (18.04.2018): 144. http://dx.doi.org/10.14419/ijet.v7i2.20.12795.
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The main concept of franchise and retail management system is to make a very user friendly environment for all the retailers and franchisee. The software will provide real-time communication between franchisees or the controlling office over the Internet. This online system will be used both at the controlling office and the franchisee centers. It will cover registration, login and order facility for franchisees etc. and store those details at the head office's centralized database. Its main application is to maintain franchisee details such as business partner details, agreement validity, meetings to be organized etc. and to integrate a number of franchisees irrespective of geographical boundaries to facilitate easy monitoring and reporting to the main office.
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Preuss, Nils, Georg Staudter, Moritz Weber, Reiner Anderl und Peter F. Pelz. „Methods and Technologies for Research- and Metadata Management in Collaborative Experimental Research“. Applied Mechanics and Materials 885 (November 2018): 170–83. http://dx.doi.org/10.4028/www.scientific.net/amm.885.170.
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Newly developed technologies and methods for the purpose of controlling uncertainty in technical systems must be proven and validated against reliable experimental studies. The availability of descriptive metadata is mandatory to enable long term usability and sharing of such experimental research data. This article introduces a concept for a software independent solution for managing data in collaborative research environments. The proposed approach leverages the advantages of capturing metadata in a uniform, modular data structure and providing software independent access to a centralized data repository as well as its contents by means of a web-application. The article presents a prototype implementation of the proposed approach and discusses its application on the demonstrator test rig of a collaborative research centre in the field of mechanical engineering.
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Okanovic, Dusan, van Hoorn, Zora Konjovic und Milan Vidakovic. „SLA-driven adaptive monitoring of distributed applications for performance problem localization“. Computer Science and Information Systems 10, Nr. 1 (2013): 25–50. http://dx.doi.org/10.2298/csis110926037o.
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Continuous monitoring of software systems under production workload provides valuable data about application runtime behavior and usage. An adaptive monitoring infrastructure allows controlling, for instance, the overhead as well as the granularity and quality of collected data at runtime. Focusing on application-level monitoring, this paper presents the DProf approach which allows changing the instrumentation of software operations in monitored distributed applications at runtime. It simulates the process human testers employ-monitoring only such parts of an application that cause problems. DProf uses performance objectives specified in service level agreements (SLAs), along with call tree information, to detect and localize problems in application performance. As a proof-of-concept, DProf was used for adaptive monitoring of a sample distributed application.
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Yang, Guibin, und Hongyu Gao. „Uncertain Risk Assessment of Knowledge Management: Based on Set Pair Analysis“. Scientific Programming 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/2025892.
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Since the knowledge resource becomes an important part of enterprise resources, the knowledge management risks could significantly affect the enterprise operation efficiency. Controlling knowledge management risks is one of the enterprise management tasks; the managers and researchers focus on how to effectively evaluate the risks. This paper aims to solve this problem and puts forward an evaluation model of the uncertain risks of knowledge management. Based on set pair theory, a model is established to identify the knowledge management risk. Through the concept of connection number, knowledge management risk is divided into five levels. Meanwhile, the development trend of knowledge management risk is classified into same tendency, equal tendency, and contrary tendency by the concept of set pair theory. The application of this model is empirically verified with Chinese enterprises. Through both static and dynamic evaluations of the knowledge management risk, this paper can effectively analyze risk development trend and provide decision support for the enterprise manager about the uncertain risks of knowledge management.
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Lappi, Teemu, und Kirsi Aaltonen. „Project governance in public sector agile software projects“. International Journal of Managing Projects in Business 10, Nr. 2 (04.04.2017): 263–94. http://dx.doi.org/10.1108/ijmpb-04-2016-0031.
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Purpose Agile methodologies are widely used to manage the technical complexity of software development, and project governance can provide feasible means of organizational support for complex project success. The purpose of this paper is to: analyze the project governance practices of public sector organizations, illustrate what kind of impact these practices have on agile software projects and describe the tensions of agile project governance. Design/methodology/approach The research is based on qualitative research strategy and applies elaborative logic with analyses of three case projects in the Finnish public sector. Findings The findings of the research describe how project governance practices can be categorized into six dimensions: business case, contracting, controlling, steering, decision-making and capability building. The results illustrate how these practices either support or detract the performance of agile projects. The results also show that there are two interfaces to agile project that create most tensions to governance – the public sector and technology. Originality/value The study contributes to both project management and information and communication technology theories by combining technical aspects of agile methodologies with micro-level project governance practices. The study also adds original value to academics by introducing the new concept of “agile project governance.” The results of this study will allow public sector project organizations to design appropriate governance mechanisms for agile projects, and to identify the challenges and tensions that need to be considered and managed in the process.
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Wang, X. W., S. F. Wu, H. B. Qin und Z. Y. Wang. „Research of Holographic Assembly Technology for Overhead Traveling Crane’s Bridge Based on the Holographic Model“. Advanced Materials Research 215 (März 2011): 356–60. http://dx.doi.org/10.4028/www.scientific.net/amr.215.356.
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According to the crane’s bridge structure assembly characteristics, taking advantages of 3D CAD software about “top-down” parameterization model design, importing the concept of product holograph assembly, all-purpose distortional module was established. Adaptive architecture based on holographic assembling and knowledge reuse was constituted ,through renewing and reusing the distinct assembly module knowledge, which used “Layout Sketch “controlling the assembly parameter and adopted the constraint relation of holographic model realized the product design alteration. The results show that the technology has satisfied the needs for assembly knowledge reuse of the products variant design, to greatly enhance product knowledge inheritance.
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Kari, Raheleh, und Martin Steinert. „Human Factor Issues in Remote Ship Operations: Lesson Learned by Studying Different Domains“. Journal of Marine Science and Engineering 9, Nr. 4 (05.04.2021): 385. http://dx.doi.org/10.3390/jmse9040385.
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The idea of remote controlling ships for operational and commercial uses has developed beyond concepts. Controlling and monitoring vessels from a distant location requires updating the concept and requirements of shore control centers (SCCs), where human operators control the fleet via cameras, GPS, and many other types of sensors. While remote ship operation promises to reduce operational and maintenance costs, while increasing loading capacity and safety, it also brings significant uncertainty related to both the human-machine and human-human interactions which will affect operations. Achieving safe, reliable, and efficient remote ship operations requires consideration of both technological, cultural, social and human factor aspects of the system. Indeed, operators will act as captain and crew remotely, from the SCC, introducing new types of hardware and software interactions. This paper provides an overview of human factor issues that may affect human-machine and human-human interactions in the course of remote ship operations. In doing so, the literature related to remote operations in the domains of shipping, aerial vehicles, cranes, train transportation, automobiles, and mining is reviewed. Findings revealed that human factor issues are likely to fall into 13 distinct groups based on the type of human interactions that take place in SCCs.
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Marshall, Owen. „Shibboleths in the studio: Informal demarcation practices among audio engineers“. Social Studies of Science 50, Nr. 6 (06.05.2020): 881–900. http://dx.doi.org/10.1177/0306312720922314.
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Recording engineers have an interest in maintaining their roles as skilled professionals as compared to external competitors, which increasingly include unpaid amateurs and automated software tools. They do this through a variety of material-semiotic demarcation practices. Formal modes of demarcation, such as unionization and professional attire, have largely eroded in recent decades, making informal practices increasingly important. These informal demarcation practices, which I term ‘shibboleths’, allow engineers to locally observe and perform differences between ‘real’ engineers and non-engineers (amateur and automated) while also controlling the visibility of these performances for various audiences. I situate the shibboleth concept within the existing literature on boundary objects and boundary-work, suggesting that it is useful for analyzing situations where collaboration and consensus temporarily break down. I consider two examples: electrical audio cable wrapping techniques and hearing the artifacts of digital vocal tuning software.
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Kadri, Salim, Sofiane Aouag und Djalal Hedjazi. „Multi-View Model-Driven Projection to Facilitate the Control of the Evolution and Quality of the Architecture“. International Journal of Software Innovation 8, Nr. 4 (Oktober 2020): 21–39. http://dx.doi.org/10.4018/ijsi.2020100102.
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In model driven-engineering, there is a myriad of approaches that use models and transformations to develop software systems. However, a few works in the literature have discussed the simplification of these models to make them more readable, understandable, and easy to navigate. This article proposed an approach that simplifies models in order to assist architects in controlling architecture evolution and quality, especially with large systems. This approach consists of two main concepts, multi-view modeling and on-demand model projection. In the former, formally specified models are divided into two views. The first one is dedicated to describe quality attributes. The second view represents the architectural view. The multi-viewing can enrich stakeholder reasoning about the developed architecture and simplify the mapping between quality attributes and architectural decisions at different abstraction levels. In the latter, the projection concept consists of extracting from source models only elements of interest to generate simpler and narrower models as output.
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Takubo, Tomohito, Tatsuo Arai, Kenji Inoue, Hikaru Ochi, Takeshi Konishi, Taisuke Tsurutani, Yasuo Hayashibara und Eiji Koyanagi. „Integrated Limb Mechanism Robot ASTERISK“. Journal of Robotics and Mechatronics 18, Nr. 2 (20.04.2006): 203–14. http://dx.doi.org/10.20965/jrm.2006.p0203.
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The Integrated Limb Mechanism (ILM) concept deals with a dual arm-leg integrating the leg for locomotion and the arm for manipulation, while it enables a robot, for example, to operate flexibly in different work and situations, dual use requires that components are compact and mobile. Integrated software controlling the leg and arm is also required for implementing the actual robot. The ILM robot ASTEIRSK has six limbs arranged radially around the center to enable locomotion and manipulation capabilities omnidirectionally. ASTERISK features upper and lower symmetrical body and workability. We propose a design for the ILM and develop a small robot I/O controlling robot motion and monitoring sensors. In multimodal performance, ASTERISK uses omnidirectional drive control to walk hexapodally alternating tripod gait and creeping for restricted mobility. The new transportation way of hexapod walking style on a grid ceiling is proposed. Experiments deal with the detection of heat sources using infrared sensors and remote control to handle an object using two arms.
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Finch, N. A., P. J. Murray, M. T. Dunn und J. Billingsley. „Using machine vision classification to control access of animals to water“. Australian Journal of Experimental Agriculture 46, Nr. 7 (2006): 837. http://dx.doi.org/10.1071/ea05325.
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Invasive vertebrate pests together with overabundant native species cause significant economic and environmental damage in the Australian rangelands. Access to artificial watering points, created for the pastoral industry, has been a major factor in the spread and survival of these pests. Existing methods of controlling watering points are mechanical and cannot discriminate between target species. This paper describes an intelligent system of controlling watering points based on machine vision technology. Initial test results clearly demonstrate proof of concept for machine vision in this application. These initial experiments were carried out as part of a 3-year project using machine vision software to manage all large vertebrates in the Australian rangelands. Concurrent work is testing the use of automated gates and innovative laneway and enclosure design. The system will have application in any habitat throughout the world where a resource is limited and can be enclosed for the management of livestock or wildlife.
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Himmler, Florian. „The Digital Factory“. International Journal of Distributed Systems and Technologies 5, Nr. 2 (April 2014): 17–30. http://dx.doi.org/10.4018/ijdst.2014040102.
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Today, industrial enterprises are increasingly facing the need to achieve shorter lifecycles for their products, which at the same time are getting more and more complex. One approach to face this challenge is to introduce the Digital Factory. The Digital Factory is defined as an IT system capable of digitally planning, controlling and optimizing all resources and activities related to a product which are performed beginning with its development and ending in the order processing – prior to the start of the real production of the product. In this article a newly defined reference process for the Digital Factory is used as basis for a software classification schema. Using this schema the results of a software market analysis for the Digital Factory domain have been structured and interpreted from a process and functionality coverage point of view. With this approach, the authors were able to prove that the amount of software solutions available within this domain is huge. This generates a need for IT support within the software selection process for the Digital Factory domain. To achieve this, a first concept for a structured software selection process is introduced. The results of this article can be used as a basis for future research on this topic.
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Ehler, Niels, Mark A. Rose und Jesper Mazanti Hansen. „Development of a Man–Plant Interface for Greenhouse Environmental Computers Using Generic Databases and Virtual Plants“. HortScience 31, Nr. 4 (August 1996): 607e—607. http://dx.doi.org/10.21273/hortsci.31.4.607e.
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Currently, greenhouse environmental computers are programmed to monitor and control the macroclimate instead of directly controlling plant growth and development, which are features of more interest to growers. Our objective was to develop a generic system to represent and control the dynamic plant processes that regulate plant growth in the greenhouse. Before plant growth can be directly controlled, the dynamic interactions between the microclimate around plants and plant physiological processes must be further understood. Future computerized control systems must be able to display an intuitive, interactive software program that helps the user understand and make use of the dynamic relationships between climate controls, climate processes, and plant processes. A conceptual framework was designed for a user interface with a biological orientation. This software consists of five different elements: the information provider, the information monitor, the information browser, the growth system controller, and the system visualizer. A demonstrator application illustrating this concept was developed and connected in real time to a standard greenhouse environmental computer. Crop tissue temperature is calculated and used instead of conventional irradiance limits to control shading screens to optimize the amount of radiation absorbed by the crop. The application is based on a set of generic automatically created paradox databases. A graphical user interface on the screen displays virtual plants that are used for visualizing, understanding, and controlling the different processes governing the crop tissue temperature.
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Kobzarenko, D. N., S. E. Savzikhanova und B. I. Shikhsaidov. „Automation Means for Controlling the Correctness of Typical Sections in a University Teacher's Document“. Programmnaya Ingeneria 12, Nr. 5 (06.08.2021): 274–80. http://dx.doi.org/10.17587/prin.12.274-280.
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The paper discusses approach to automating the processes of monitoring and editing standard sections in a document of a university teacher in streaming mode. As a toolkit for solving the problem, it is proposed to use the Python programming language with the connection of the python-docx and pandas libraries. Despite the fact that the projected automation tools are focused on a specific task to control documents of a university teacher, the development of the concept of their construction is carried out with an abstraction from the type of documentation. The set of functions may vary depending on the problem being solved. As a result of work on the creation of tools for automating the control of the correctness of typical sections of a university teachers document, a framework of an open software environment for streaming verification of typical sections of documents in the Python language was designed, capable of adapting to the required verification tasks. The project is currently implemented for autonomous operation in Windows OS, it is also expected to be implemented as a web application. For active use in practice for specific tasks, the development of appropriate script packages is required. The main purpose of the development is to release human resources from the routine process of document control and direct it to the implementation of the employees creative ideas.
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Mallett, Ian, Cem Yuksel und Larry Seiler. „Efficient Adaptive Deferred Shading with Hardware Scatter Tiles“. Proceedings of the ACM on Computer Graphics and Interactive Techniques 3, Nr. 2 (26.08.2020): 1–17. http://dx.doi.org/10.1145/3406184.
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Adaptive shading is an effective mechanism for reducing the number of shaded pixels to a subset of the image resolution with minimal impact on final rendering quality. We present a new scheduling method based on on-chip tiles that, along with relatively minor modifications to the GPU architecture, provides efficient hardware support. As compared to software implementations on current hardware using compute shaders, our approach dramatically reduces memory bandwidth requirements, thereby significantly improving performance and energy use. We also introduce the concept of a fragment pre-shader for programmatically controlling when a fragment shader is invoked, and describe advanced techniques for utilizing our approach to further reduce the number of shaded pixels via temporal filtering, or to adjust rendering quality to maintain stable framerates.
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Huang, Jian-Lin, Zhenishbek Zhakypov, Harshal Sonar und Jamie Paik. „A reconfigurable interactive interface for controlling robotic origami in virtual environments“. International Journal of Robotics Research 37, Nr. 6 (Mai 2018): 629–47. http://dx.doi.org/10.1177/0278364918769157.
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Origami shape transformation is dictated by predefined folding patterns and their folding sequence. The working principle of robotic origami is based on the same principle: we design quasi-two-dimensional tiles and connecting hinges and define and program their folding sequences. Since the tiles are often of uniform shape and size, their final configuration is governed by the kinematic relationship. Mathematicians, computer scientists and even architects have studied a wide range of origami algorithms. However, for multiple shape transformations, the origami design parameters and consequently sequence planning become more challenging. In this work, we present a reconfigurable interactive interface, a physics-based modeling control interface to explore the design space of origami robots. We developed two interactive modes for proof of concept of a bidirectional communication interface between virtual and physical environments. The first interaction mode is origami-inspired, foldable surfaces with distributed sensors that can recreate folding sequences and shape transformations in a virtual environment via hardware-in-loop simulation. Its complementary digital transcription lays the foundation for a robotic origami design tool that provides visual representation of various design formulations as well as an intuitive controller for robotic origami. In the second interaction mode, we construct a physics-based modeling interface for intuitive user manipulation of robotic origami in a virtual environment. Algorithms for graphical representation and command transformation were developed for robotic interaction. Lastly, we tested the efficacy of the algorithms on prototypes to discover the applications and capacities of the reconfigurable interactive interface.
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Kim, Won-Suk, und Sang-Hwa Chung. „Proxy SDN Controller for Wireless Networks“. Mobile Information Systems 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/7172187.
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Management of wireless networks as well as wired networks by using software-defined networking (SDN) has been highlighted continually. However, control features of a wireless network differ from those of a wired network in several aspects. In this study, we identify the various inefficient points when controlling and managing wireless networks by using SDN and propose SDN-based control architecture called Proxcon to resolve these problems. Proxcon introduces the concept of a proxy SDN controller (PSC) for the wireless network control, and the PSC entrusted with the role of a main controller performs control operations and provides the latest network state for a network administrator. To address the control inefficiency, Proxcon supports offloaded SDN operations for controlling wireless networks by utilizing the PSC, such as local control by each PSC, hybrid control utilizing the PSC and the main controller, and locally cooperative control utilizing the PSCs. The proposed architecture and the newly supported control operations can enhance scalability and response time when the logically centralized control plane responds to the various wireless network events. Through actual experiments, we verified that the proposed architecture could address the various control issues such as scalability, response time, and control overhead.
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Nadeem, Muhammad Asgher, und Scott Uk-Jin Lee. „Dynamic Agile Distributed Development Method“. Mathematics 7, Nr. 10 (13.10.2019): 963. http://dx.doi.org/10.3390/math7100963.
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“Agile” is an effective software engineering model with a high trust and acceptance rate among its users. The term agility comes from the concept of rapid development and working in a team for better results and a faster competition rate when compared with any other software engineering model. In this study, an assessment of the different patterns, frameworks, and application program interfaces available for distributed development in an agile model is given. After analyzing the state-of-the-art distributed models, a novel framework of a dynamic agile distributed development method (DADDM) is introduced in this paper. Many researchers have worked on global software development using the agile approach; however, we are presenting the idea of incorporating the agile benefits with dynamic distributed software development. The applicability of the proposed model is checked via two selected parameters: a feasibility study and a business study. The complete DADDM development life cycle is presented in the methodology section. The techniques used in DADDM and team members’ roles and responsibilities in DADDM are defined in this study. This study reflects all pillars of planning, controlling, organizing, and management of leadership. The use of DADDM in distributed agile development encourages future researchers to use this proposed framework for comparison and testing of their models and to check the effectiveness through a comparison with DADDM.
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Goh, H. H., Azuwien Aida, S. S. Lee, S. Y. Sim und K. C. Goh. „Predictive Direct Power Control (PDPC) of Grid-connected Dual-active Bridge Multilevel Inverter (DABMI)“. International Journal of Power Electronics and Drive Systems (IJPEDS) 8, Nr. 4 (01.12.2017): 1524. http://dx.doi.org/10.11591/ijpeds.v8.i4.pp1524-1533.
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This paper deals with controlling a grid-connected dual-active bridge multilevel inverter for renewable energy integration. The concept of direct power control is integrated with model predictive control algorithm, which is termed as predictive direct power control, to control the real and reactive power injected into the power grid. The proposed multilevel inverter allows more options of feasible voltage vectors for switching vector selections in order to generate multilevel outputs, and thereby obtaining high power quality in the power grid. By using the predictive direct power control, simulation results show that the proposed multilevel inverter produces lower power ripple and manage to achieve currents with low total harmonic distortion which are well within the IEEE standard. The modeling and simulation of the system are implemented and validated by MATLAB Simulink software.
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Pawliczek, Roland, und Piotr Soppa. „Measurement and Control System for Analysis of the Operation of the Stepper Motor“. Solid State Phenomena 260 (Juli 2017): 113–26. http://dx.doi.org/10.4028/www.scientific.net/ssp.260.113.
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The paper describes a control and measurement system for controlling and analysing operation of a stepper motor. The system design is based on the concept of virtual instrument, where data acquisition and transmission use standard solutions, whereas software serves both as a generator and a measurement system – an oscilloscope. The generator allows efficient control of motor operation in the following control modes: wave, full-step and half-step control. There were no winding powering sequence errors observed. The measurement system allows presenting and analysing voltage waveforms in individual windings with possibility to detect couplings and overvoltages. It was also shown that it is possible to detect locking of rotor rotation.The proposed virtual instruments have open structure, which enables extended analysis based on available measurements or expand range of measurements as long as measurement and control system instrumentation allows that.
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Lukic, Ljubomir, Zoran Andjelkovic und Suzana Stamatovic. „Computer integration of cardboard production“. Chemical Industry 58, Nr. 5 (2004): 221–27. http://dx.doi.org/10.2298/hemind0405221l.
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A company for the development of software for industrial applications "PBS" Belgrade has designed a modern information system for monitoring and controlling production in the paper industry, which is completely integrated with the technological equipment and production processes. The paper presents the complete concept of the system, from electronic communication with business partners over computer support to all the production processes in the factory, to the delivery of the products to the customers. Realized as a CIM (Computer Integrated Manufacturing) system, it enables management to have a complete overview of the condition of all the production and business activities, and ensures momentary and complete reliable information about all the parameters of the business system. Although the system was developed for the needs of the cardboard factory "Umka", with particular modifications, it could also be used in other factories of the paper and cardboard packaging industry.
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Otong, Muhamad, und Ceri Ahendyarti. „Control design variable speed drive three-phase induction motor based cascaded H-Bridge seven level“. MATEC Web of Conferences 218 (2018): 01004. http://dx.doi.org/10.1051/matecconf/201821801004.
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The design variable speed drive induction motor is based on the power supply system of cascaded H-bridge seven level inverter. The variable speed regulation of the induction motor is performed by controlling the variable magnitude and output voltage frequency of the CHB circuit. The output voltage of the CHB circuit is generated by synthesizing the reference voltage signal derived from the field oriented control algorithm model of the induction motor. Testing and circuit operation mode using switching phase-switch technique on variable speed drive system of induction motor is done to know system performance in transient and steady-state by using computer software. The response of the simulation shows the conformity of the proposed concept. From this research is expected to improve the quality and capacity of output power in modular way so that it can be applied to the electric drive in general.
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Lee, U., und C. Han. „A suspension system with a variable roll centre for the improvement of vehicle handling characteristics“. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 215, Nr. 6 (01.06.2001): 677–96. http://dx.doi.org/10.1243/0954407011528266.
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In this paper, the improvement of vehicle handling characteristics using variable roll centre suspension (VRCS) is investigated. A vehicle with VRCS can improve stability and ride comfort by automatically controlling suspension geometry in accordance with the running conditions of the vehicle. To achieve this, a variable roll centre concept in the McPherson strut suspension system is suggested, while the two parts most sensitive for controlling the roll centre are suggested. One is between the vehicle body-side connecting portion of the lower arm and the vehicle body (control input, LCZ), and the other is between the vehicle body-side connecting portion of the strut and the vehicle body (control input, STY). Kinematic roll centre analysis, based on the analytic half-car model, shows that the use of two control inputs, LCZ and STY, can decrease migration of the roll centre and centre of gravity according to the side force. In order to quantify the relationship between roll centre and geometry control input and evaluate handling performance, a full vehicle model of 15 degrees of freedom (DOF) is constructed using multi-body dynamic analysis software, ADAMS. In step steering and double lane change manoeuvres, simulation results demonstrate that a vehicle with VRCS adjusts roll centre migration, and handling characteristics such as roll angle, lateral acceleration and yaw rate are much improved.
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Suszynski, Robert. „A Stand-alone Station and DSP Method for Deep Sky Objects Astrophotography“. International Journal of Electronics and Telecommunications 60, Nr. 2 (01.06.2014): 157–64. http://dx.doi.org/10.2478/eletel-2014-0019.
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Abstract This article presents the basic assumptions and aspects of the design of a stand-alone station for deep sky objects (DSO) astrophotography. It describes the main elements of a project concerned with automatization, remote control and autoguiding [1-5] of a system. The article also covers in further detail the innovative use of a driver with an ATMEGA16 microcontroller and dedicated software for controlling the astronomical dome and its synchronization with telescope movement. Furthermore, a new concept of reprogrammable digital circuit implementation for auto-guiding systems is shown, which operates with a popular CCD webcam and ST4 compatible equatorial mounts. This idea was verified by the circuit prototype implemented on an Altera Cyclone II FPGA device and tested with real sky objects. A fully functional solution for performing automatic observation is presented. The project was also designed for amateur-astronomy, and therefore, user-friendly configuration and maintenance constituted very important factors, which were taken into consideration.
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Herbuś, K., und P. Ociepka. „Designing of a technological line in the context of controlling with the use of integration of the virtual controller with the mechatronics concept designer module of the PLM Siemens NX software“. IOP Conference Series: Materials Science and Engineering 227 (August 2017): 012057. http://dx.doi.org/10.1088/1757-899x/227/1/012057.
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Spirin, N. A., V. V. Lavrov, V. Yu Rybolovlev, D. A. Shnaider, A. V. Krasnobaev und I. A. Gurin. „Digital transformation of pyrometallurgical technologies: State, scientifc problems and prospects of development“. Izvestiya. Ferrous Metallurgy 64, Nr. 8 (02.09.2021): 588–98. http://dx.doi.org/10.17073/0368-0797-2021-8-588-598.
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The article considers an overview and critical analysis of the digitalization of the leading Russian ferrous metallurgy enterprises in accordance with the Industry 4.0 development concept. It provides for the creation of digital twins of pyrometallurgical technologies, the widespread use of machine vision and artifcial intelligence. The examples of domestic industrial systems using the technologies of machine (technical) vision in production cycle, digital assistants (twins) of metallurgical units and their sets are presented. With regard to blastfurnace production, technical vision systems used to control processes in the upper and lower zones of blast furnace are considered. A promising area is the integration of technical vision and decision support systems, including algorithms and software modules for implementation of deterministic mathematical models of individual phenomena of blast furnace smelting. They are based on fundamental physical concepts of blastfurnace smelting processes. One of the main directions of digital transformation of pyrometallurgical technologies is creation of intelligent control systems for technological process in metallurgy in real time. When formulating and solving problems, it is required not only to study the characteristics describing the effect of change in melting conditions on technical and economic indicators of the operation of individual furnaces, but also a detailed analysis for mathematical description of external and internal constraints. The authors present the examples of subsystems for control of heat losses in a blast furnace, predicting the parameters of tuyere hearths and controlling distribution of blast parameters around the perimeter of a blast furnace, an automated system for analyzing and predicting production situations in a blast furnace. Creation of such systems was carried out on the basis of modern principles and technologies for the development of appropriate mathematical, algorithmic and software support.
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Hofmann, Julian, und Holger Schüttrumpf. „Risk-Based and Hydrodynamic Pluvial Flood Forecasts in Real Time“. Water 12, Nr. 7 (02.07.2020): 1895. http://dx.doi.org/10.3390/w12071895.
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The effective forecast and warning of pluvial flooding in real time is one of the key elements and remaining challenges of an integrated urban flood risk management. This paper presents a new methodology for integrating risk-based solutions and 2D hydrodynamic models into the early warning process. Whereas existing hydrodynamic forecasting methods are based on rigid systems with extremely high computational demands, the proposed framework builds on a multi-model concept allowing the use of standard computer systems. As a key component, a pluvial flood alarm operator (PFA-Operator) is developed for selecting and controlling affected urban subcatchment models. By distributed computing of hydrologic independent models, the framework overcomes the issue of high computational times of hydrodynamic simulations. The PFA-Operator issues warnings and flood forecasts based on a two-step process: (1) impact-based rainfall thresholds for flood hotspots and (2) hydrodynamic real-time simulations of affected urban subcatchments models. Based on the open-source development software Qt, the system can be equipped with interchangeable modules and hydrodynamic software while building on the preliminary results of flood risk analysis. The framework was tested using a historic pluvial flood event in the city of Aachen, Germany. Results indicate the high efficiency and adaptability of the proposed system for operational warning systems in terms of both accuracy and computation time.
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Salem, Fathia H. A., Khaled S. Mohamed, Sundes B. K. Mohamed und Amal A. El Gehani. „The Development of Body-Powered Prosthetic Hand Controlled by EMG Signals Using DSP Processor with Virtual Prosthesis Implementation“. Conference Papers in Engineering 2013 (16.06.2013): 1–8. http://dx.doi.org/10.1155/2013/598945.
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The state of the art in the technology of prosthetic hands is moving rapidly forward. However, there are only two types of prosthetic hands available in Libya: the Passive Hand and the Mechanical Hand. It is very important, therefore, to develop the prosthesis existing in Libya so that the use of the prosthesis is as practical as possible. Considering the case of amputation below the elbow, with two movements: opening and closing the hand, this work discusses two stages: developing the operation of the body-powered prosthetic hand by controlling it via the surface electromyography signal (sEMG) through dsPIC30f4013 processor and a servo motor and a software based on fuzzy logic concept to detect and process the EMG signal of the patient as well as using it to train the patient how to control the movements without having to fit the prosthetic arm. The proposed system has been practically implemented, tested, and gave satisfied results, especially that the used processor provides fast processing with high performance compared to other types of microcontrollers.
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VIPSITA, SWATI, und SANTANU KU RATH. „PROTEIN SUPERFAMILY CLASSIFICATION USING ADAPTIVE EVOLUTIONARY RADIAL BASIS FUNCTION NETWORK“. International Journal of Computational Intelligence and Applications 11, Nr. 04 (Dezember 2012): 1250026. http://dx.doi.org/10.1142/s1469026812500265.
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In this paper, the concept of adaptive multiobjective genetic algorithm (AMOGA) is applied for the structure optimization of radial basis function network (RBFN). The problem of finding the number of hidden centers remains a critical issue in the design of RBFN. The number of basis function controls the complexity and generalization ability of the network. The most parsimonious network obtained from the pareto front is applied in one of the challenging research area of proteomics and computational biology: Protein superfamily classification. The problem deals with predicting the family membership of a newly discovered amino acid sequence. The modification to the earlier approach of multiobjective genetic algorithm (MOGA) is done based on the two key controlling parameters such as probability of crossover and probability of mutation. These values are adaptively varied based on the performance of the algorithm i.e., based on the percentage of total population present in the best nondomination level. Principal component analysis (PCA) is used for dimension reduction and significant features are extracted from long feature vector of amino acid sequences. Numerical simulation results illustrates the efficiency of our approach in terms of faster convergence, optimal architecture and high level of classification accuracy.
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Mehmood, Faisal, Israr Ullah, Shabir Ahmad und Do-Hyeun Kim. „A Novel Approach towards the Design and Implementation of Virtual Network Based on Controller in Future IoT Applications“. Electronics 9, Nr. 4 (02.04.2020): 604. http://dx.doi.org/10.3390/electronics9040604.
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The Internet of Things refers (IoT) to the billions of physical devices around the globe that are connected to the Internet, collecting and sharing data. The overall Internet of Things market is projected to be worth more than 50.6 billion U.S. dollars in 2020. IoT devices possess low processing capabilities, limited memory, limited storage, and minimal network protocol support. With the help of cloud computing technology, we can overcome the limited resources of IoT devices. A lot of research has been conducted on IoT device virtualization to facilitate remote access and control. The concept of virtualization in IoT is to provide a virtual representation of physical devices in the form of virtual objects. IoT devices are more likely to be accessed and communicate through virtual objects in the near future. In this paper, we present the design and implementation of building a virtual IoT network for a smart home. The virtual network is based on virtual objects and IoT controller. We derived the concept from Software Defined Network (SDN) and separated the control plane and data plane in the virtual IoT network. This enhanced the rapid development of diverse applications on top of the virtualization layer by establishing a dynamic end-to-end connection between IoT devices. This article briefly explains the design and development of the virtual network. Results achieved during experiments and performance analysis show that IoT controller enhances the capabilities of a virtual network by dynamically controlling the traffic congestion, handling mapping requests, and routing mechanisms.
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Dorovskoy, Vladimir Alekseevich, Andrey Vladimirovich Degtyarev, Nadezhda Pavlovna Smetyuh und Anton Aleksandrovich Zinchenko. „Multifunctional simulator for providing ship with data on maneuverability“. Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2021, Nr. 3 (31.08.2021): 14–22. http://dx.doi.org/10.24143/2073-1574-2021-3-14-22.
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The article presents the research analysis on the ship safety. It has been found out that due to the lack of a methodology for planning an algorithm for the maneuvering control system, there is no concept of solving technological problems or any understanding of what data are needed to perform the work. Despite the cybernetic devices and programs perform some part of the work and prepare the necessary data, the skipper does not understand how the device generates them. The task was to create a prototype that could allow to get data on the ship maneuverability. After the initial stage of training has been passed the skills should be obtained, which further will transform into the passive and stable abilities. The created hardware and software package allows implementing the concept of the guaranteed safety of maneuvering control in piloting vessels due to improving the methods of forming sustainable skills and bringing it to the automation level. It was recommended to use a simulator with visualization, to introduce the new algorithms of controlling the ship propulsion in the area of responsibility by coastal and to develop the recommendations on divergence, new training methods for pilots on shore. The conclusions were made on improving the level of information support by preparing subject-specific declarative knowledge and presenting it in an easily accessible form for perception when making decisions on maneuvering. The developed methodology is implemented in the training process of pilots in the training complex of Kerch State Maritime Technological University
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Magomedov, S. G., P. V. Kolyasnikov und E. V. Nikulchev. „Development of technology for controlling access to digital portals and platforms based on estimates of user reaction time built into the interface“. Russian Technological Journal 8, Nr. 6 (18.12.2020): 34–46. http://dx.doi.org/10.32362/2500-316x-2020-8-6-34-46.
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The paper addresses the development of technology for controlling access to digital portals and platforms based on assessments of personal characteristics of user behavior built into the interface. In distributed digital platforms and portals using personal data, big data is collected and processed using specialized applications using computer networks. In accordance with the law, the data is stored on internal corporate servers and data centers. Special attention is paid to the tasks of differentiation and control of access in modern information systems. Wide availability and mass scale of services should be accompanied by more careful control and user verification. Access control to such systems cannot be ensured only through technologies and information security tools; efficiency can be increased through software and hardware architectural solutions. The paper proposes to expand the currently developing SIEM technology (Security information and event management), which combines the concept of security event management and information security management, with blocks of user behavior analysis. As a characteristic that can be measured without overloading communication channels and is independent of the type of device used, the psychomotor reaction time is proposed, measured as the performance of actions with the interface. A technological solution has been developed for implementation in a wide range of digital platforms: banking, medical, educational, etc. The results of experimental research using a digital platform of mass psychological research are presented. For the research, data from a mass survey were used when answering (in the form of a choice from the available options) to questions about the level of education. Analysis of the reaction time data showed the possibility of standardization and the same indicators of specific users when answering different questions.
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Bertoli, Annalisa, Andrea Cervo, Carlo Alberto Rosati und Cesare Fantuzzi. „Smart Node Networks Orchestration: A New E2E Approach for Analysis and Design for Agile 4.0 Implementation“. Sensors 21, Nr. 5 (26.02.2021): 1624. http://dx.doi.org/10.3390/s21051624.
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The field of cyber-physical systems is a growing IT research area that addresses the deep integration of computing, communication and process control, possibly with humans in the loop. The goal of such area is to define modelling, controlling and programming methodologies for designing and managing complex mechatronics systems, also called industrial agents. Our research topic mainly focuses on the area of data mining and analysis by means of multi-agent orchestration of intelligent sensor nodes using internet protocols, providing also web-based HMI visualizations for data interpretability and analysis. Thanks to the rapid spreading of IoT systems, supported by modern and efficient telecommunication infrastructures and new decentralized control paradigms, the field of service-oriented programming finds new application in wireless sensor networks and microservices paradigm: we adopted such paradigm in the implementation of two different industrial use cases. Indeed, we expect a concrete and deep use of such technologies with 5G spreading. In the article, we describe the common software architectural pattern in IoT applications we used for the distributed smart sensors, providing also design and implementation details. In the use case section, the prototypes developed as proof of concept and the KPIs used for the system validation are described to provide a concrete solution overview.
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Specht, Cezary, Emilian Świtalski und Mariusz Specht. „Application of an Autonomous/Unmanned Survey Vessel (ASV/USV) in Bathymetric Measurements“. Polish Maritime Research 24, Nr. 3 (01.09.2017): 36–44. http://dx.doi.org/10.1515/pomr-2017-0088.
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AbstractThe accuracy of bathymetric maps, especially in the coastal zone, is very important from the point of view of safety of navigation and transport. Due to the continuous change in shape of the seabed, these maps are fast becoming outdated for precise navigation. Therefore, it is necessary to perform periodical bathymetric measurements to keep them updated on a current basis. At present, none of the institutions in Poland (maritime offices, Hydrographic Office of the Polish Navy) which are responsible for implementation of this type of measurements has at their disposal a hydrographic vessel capable of carrying out measurements for shallow waters (at depths below 1 m). This results in emergence of large areas for which no measurement data have been obtained and, consequently, the maps in the coastal zones are rather unreliable.The article presents the concept of bathymetric measurements for shallow waters with the use of an autonomous, unmanned survey vessel (ASV/USV). For this purpose, the authors modernized a typical ASV/USV unit with standard radio remote control system to the fully autonomous mode. As part of the modernization, the route planning software was created. The developed software works based on, alternatively, GNSS measurements of the coastline, or satellite images. The system was supplemented by an own autopilot (adapted for flying drones). Moreover, the method of controlling electric motors was changed thanks to the use of own electronic circuit.The modernized ASV/USV measuring system was verified by performing bathymetric measurements of the retention reservoir in Gdansk, Poland. Then, the obtained measurement data were used to create a digital bottom model and a bathymetric map of the reservoir.
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Kovalev, A. V., und L. N. Orlova. „Price as Underestimated Parameter of the System of Providing Economic Security in the Country“. Vestnik of the Plekhanov Russian University of Economics 18, Nr. 2 (09.04.2021): 178–98. http://dx.doi.org/10.21686/2413-2829-2021-2-178-198.
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The article studies genesis of price and pricing processes in the system of economic security. From theoretical and methodological point of view the research investigates different approaches to the definition and shaping the system of economic security, identifies key problems of pricing and shows lines of possible minimization of processes of price manipulation. It highlights non-linear character of pricing, drawbacks of today’s legal tools of regulating pricing processes (such as tariff and antitrust regulation), including those on the basis of administrative and court practices and causes of economic crises arising. From the practical point of view the article studies possibilities of developing the adaptive automation system, which can provide transfer, processing and storage of information about pricing processes. The goal of the research is to distinguish the role of pricing processes in the system of economic security and to develop the concept of uniform automated system of monitoring pricing processes aimed at resolving problems of complex management of economy and providing economic security of the country. On the basis of mentioned-above drawbacks (risks) the authors formulate the suggestion of shaping a new system of management and control over pricing processes based on maximum use of information technologies. These technologies should foster conducting analysis and risk estimation by using information and software means of the new system, including systems of controlling databases, the system of fast development of algorithms for information analysis and system and applied software. For this research such methods as system analysis, retrospective analysis and analytical methods of data investigation were used. Empiric materials of research were presented by open data and analytical reports of the Federal Antitrust Service of the Russian Federation, decisions and rules of the Supreme and Arbitration courts of the Russian Federation, official data of state power bodies.
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Zhang, Chong, Kaixuan Tan, Tingting Xie, Yahui Tan, Lingdi Fu, Nan Gan und Lingzhen Kong. „Flow Microbalance Simulation of Pumping and Injection Unit in In Situ Leaching Uranium Mining Area“. Processes 9, Nr. 8 (26.07.2021): 1288. http://dx.doi.org/10.3390/pr9081288.
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In situ leaching (ISL) uranium mining technology is an in situ mining technology in which the chemical solution is injected into the ore-bearing strata through drilling wells, and the solution moves along the ore bed by controlling the hydraulic gradient of the flow field and reacts with the ore to form uranium-bearing solution. To reduce leaching dead angle in the process of leaching, each pumping and injection unit should achieve uniform leaching at the end of production, and appropriate pumping and injection mode should be adopted for pumping and injection wells of each unit in the mining area. In this paper, on the basis of the actual production data of a sandstone uranium mine, we established the unit flow model of ISL uranium mining area by using GMS software. The unit flow balance of 72 boreholes in the whole mining area was analyzed and optimized through the model. The concept of flow microbalance of pumping and injection unit in the mining area is put forward for the first time, and the calculation equation of supply and receive the flow of pumping and injection well is determined. The calculation and analysis process of flow microbalance of pumping and injection unit in mining area is established. The simulation results showed that the application effect of the model was good, and the correlation coefficient of the solute transport model reached 0.8.
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Gumusel, L., und A. Baz. „Experimental and theoretical evaluation of the buoyancy and gravity driven underwater robots“. Robotica 13, Nr. 3 (Mai 1995): 273–86. http://dx.doi.org/10.1017/s026357470001780x.
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SummaryThe dynamic model of a new class of underwater robot is derived and the validity of the model is checked experimentally. Close agreements between theory and experiment are attained. The interaction between the buoyancy and gravity forces acting on the robot arm, present in the underwater environment, is used to generate torques necessary to move the arm. The mathematical model of a multi-arm robot is developed to define the interaction between the dynamics of the moving weight and the robot links under the action of the resisting water drag and other external forces. The Lagrangian method is used in the formulation of the arm dynamics. The developed dynamic equations serve as means for designing the control laws necessary for controlling the position of the different joints of the robots. The study indicates that the buoyancy and gravity-driven robot can position a payload accurately as well as at a fairly fast speed of response. It is indicated from the theoretical and experimental study that the arm motion is created by a small displacement of moving weight on the power screw. Therefore, power requirement of this type of robot is just as enough to overcome the friction between the power screw and the moving weight. This features emphasize the potential of the concept as a viable means for driving underwater robots
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H., Muhammad Asraf, Nur Dalila K.A., Zakiah M.Y., Amar Faiz Z.A. und Nooritawati M.T. „Computer Assisted E-Laboratory using LabVIEW and Internet-of-Things Platform as Teaching Aids in the Industrial Instrumentation Course“. International Journal of Online and Biomedical Engineering (iJOE) 14, Nr. 12 (23.12.2018): 26. http://dx.doi.org/10.3991/ijoe.v14i12.8992.
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<p class="0abstract">Nowadays, the emerging trend of utilizing the internet technology to improve teaching methods has caught the attention of many researchers. The education sector is the particular sector which has been getting the influence to implement more advanced teaching methods, and this can be seen through the application of the monitoring system, remote control, and even data acquisition through the Internet. Therefore, this study demonstrates the development of the interactive system via the Internet for the remote access to the equipment known as LD-Didactic temperature system which is used in the laboratory. This particular system is developed using an Arduino-Espresso8266 and LabVIEW platform which is integrated with Blynk software in order to remotely control the Proportional, Integral, and Derivative (PID) setting. Furthermore, the proposed framework is specifically focused on the PID temperature control system, which allows students to learn and simulate the concept of the control scheme by adjusting suitable parameter gains. Moreover, the system evaluation demonstrates the functionality and ability of direct controlling, monitoring, and tracking in order to achieve the targeted temperature control. These three strategies ensure the reproducibility of the experiment for the implementation in different systems. Last but not least, the designed system illustrates that full integration of the system with the internet platform provides students with the underlying knowledge of fundamentals, graphic visualization, and simulation practices. These will subsequently facilitate the learning process of the students.</p>
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Mizukawa, Makoto, Kazuhito Yokoi, Tsutomu Hasegawa, Shigeki Sugano und Yasushi Nakauchi. „Special Issue on Kukanchi Interactive Human – Space Design and Intelligence Dedicated to Dr. Kazuo Tanie“. Journal of Robotics and Mechatronics 21, Nr. 4 (20.08.2009): 441–42. http://dx.doi.org/10.20965/jrm.2009.p0441.
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The history of science and technology evolution plays a great role in expanding human ability. Physical enhancement is done by controlling power after invention of steam engines and governor. These lead inventions of various useful machines to improve the productivity of material, food, and many attractive consumer products such as automobiles. Electrics and electronics also provided social infrastructure for industries and individual life. From ancient times, media have been developed to assist in intellectual activities such as characters, clay boards, papers, printing machines to carry knowledge. The accumulation of knowledge was one source of governance power and social movement of the Enlightenment promoted spreading such knowledge to citizens by editing Encyclopedias. This movement opened modern and civilized era. Telecommunication and computer technologies have accelerated to develop tools that help thinking and communication using the enormous knowledge stored in storages distributed worldwide. Kukanchi —Interactive Human-Space Design and Intelligence— enhances human physical boundary limited by its body to its surrounding space adopting and fusing technologies such as robotics, structured information, sensor network, object oriented software, software engineering of Robot Technology (RT) middleware, human–robot–interaction, etc. Kukanchi is expected to provide barrier–free environment and support to maintain QoL of daily life for any kind of handicapped people. This special issue features nine excellent papers from researchers devoting efforts to establishing kukanchi field and concept. This special issue is edited by guest editors, Prof. Makoto Mizukawa (Shibaura Institute of Technology) and four editors, Drs. Kazuhito Yokoi (AIST), Tsutomu Hasegawa (Kyushu University), Shigeki Sugano (Waseda University), Yasushi Nakauchi (University of Tsukuba). We thank the authors for their contributions and reviewers for their time and effort in making this special issue possible. We also thank the JRM Editorial Board for providing the opportunity to take part in this work. In closing, we would like to express our deep gratitude to the late Dr. Kazuo Tanie, who founded the Kukanchi research group.
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Allafta, Hadi, Christian Opp und Suman Patra. „Identification of Groundwater Potential Zones Using Remote Sensing and GIS Techniques: A Case Study of the Shatt Al-Arab Basin“. Remote Sensing 13, Nr. 1 (31.12.2020): 112. http://dx.doi.org/10.3390/rs13010112.
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Rapid population growth has raised the groundwater resources demand for socio-economic development in the Shatt Al-Arab basin. The sustainable management of groundwater resources requires precise quantitative evaluation, which can be achieved by applying scientific principles and modern techniques. An integrated concept has been used in the current study to identify the groundwater potential zones (GWPZs) in the Shatt Al-Arab basin using remote sensing (RS), geographic information system (GIS), and analytic hierarchy process (AHP). For this purpose, nine groundwater occurrence and movement controlling parameters (i.e., lithology, rainfall, geomorphology, slope, drainage density, soil, land use/land cover, distance to river, and lineament density) were prepared and transformed into raster data using ArcGIS software. These nine parameters (thematic layers) were allocated weights proportional to their importance. Furthermore, the hierarchical ranking was conducted using a pairwise comparison matrix of the AHP in order to estimate the final normalized weights of these layers. We used the overlay weighted sum technique to integrate the layers for the creation of the GWPZs map of the study area. The map has been categorized into five zones (viz., very good, good, moderate, poor, and very poor) representing 4, 51, 35, 9, and 1% of the study area, respectively. Finally, for assessing the effectiveness of the model, the GWPZs map was validated using depth to groundwater data for 99 wells distributed over the basin. The validation results confirm that the applied approach provides significantly solid results that can help in perspective planning and sustainable utilization of the groundwater resources in this water-stressed region.
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Senkal, Doruk, und E. Ilhan Konukseven. „Passive Haptic Interface with MR-Brakes for Dental Implant Surgery“. Presence: Teleoperators and Virtual Environments 20, Nr. 3 (01.06.2011): 207–22. http://dx.doi.org/10.1162/pres_a_00045.
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In this research a passive haptic interface is explored as a surgical aid for dental implant surgery. The placement of a dental implant is critical since positioning mistakes can lead to permanent damage in the nerves controlling the lips, long lasting numbness, and failure of the implant and the crown on it. Haptic feedback to the surgeon in real time can decrease dependence on the surgeon's skill and experience for accurate implant positioning and increase the overall safety of the procedure. The developed device is a lightweight mechanism with weight compensation. Rotary magnetorheological (MR) brakes were custom designed for this application using the serpentine flux path concept. The resulting MR-brakes are 33% smaller in diameter than the only commercially available such brakes, yet produce 2.7 times more torque at 10.9 Nm. Another contribution of this research was a ferro-fluidic sealing technique which decreased the off-state torque. The control system implemented the passive force manipulability ellipsoid algorithm for force rendering of rigid wall-following tasks. Usability experiments were conducted to drill holes with haptic feedback. The maximum average positioning error was 2.88 mm along the x axis. The errors along the y and z axes were 1.9 mm and 1.16 mm, respectively. The results are on the same order of magnitude as other dental robotic systems. The innovative new MR-brake actuators, inherent safety of the system, and simplicity of control make this passive haptic interface a viable option for further exploration.
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Vajna, István, und Anita Tangl. „THE UPGRADED ROLE OF THE VALUE STREAM DESIGN FOR REDESIGNING THE FACTORY LAYOUT“. Journal of Management Vol. 36, No. 2 (01.12.2020): 49–57. http://dx.doi.org/10.38104/vadyba.2020.2.08.
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The case study shows the re-optimization of an initial new factory layout design with Value Stream Design (VSD). The VSD is a quantitative method and its’ final goal is to make a waste free optimized material flow. The primary goal of arrangement is to reduce transportation distances and frequencies, optimize human load. Initially the whole factory shop floor layout design was already made in push concept. The plans were made by production management, logistics, engineering department at the headquarter of the multinational automotive company with based on VDI2870 holistic concept linking strategy on tactics and operation. On the layout (v1.) the hundreds of machines were placed and arranged by CAD (Computer Design) engineers to fit the space. The factory building has 15,000 m2 with empty shop floor waiting for the final decisions for equipment. The factory production area was shared into six main production areas (P1-P6), which correlates with their product complexity of the product families. Each production area output can be finished product (FP) or semi-finished product (SFP) for the next production areas. To validate the whole factory layout it was necessary to involve lean experts that identified disadvantages and constraints. Without lean implementation the company’s transportation waste would be 49% more per year. The Value Stream Design importance nowadays is upgrading to a higher level, when the whole global business is changed, the labor force fluctuates, and the cost and delivery time reduction plays a vital role in the company’s profit and future. The research shows that if the decision taking is based on real data and facts the controlling and management can do its best in time. Using VSD and re-evaluating the transportation routes, frequency and costs is the first step to define a smooth, low cost, material flow (v2.). This development ensured the company to drive from push to pull production through mixed production system. Originally, the production flow was clockwise orientation. It was changed step by step to mixed production by eliminating work in process storages, implementing FIFO lanes, Milk Run, and Kanban. The total annual transportation distances were reduced from 4,905,000 m between the rump-up and serial production period. The warehouse storage size was reduced to 50% and implementation cost from €75,000 to €32,500. By eliminating work in process storages along production lines it was possible to open a new two way transportation road that also will serve the AGV’s operations in industry 4.0 projects. Due to decreased lead time the logistic labor productivity increased by 45%. Besides taking measurements for the VSD it was used Value Stream Mapping as a lean tool and an own designed VSD evaluation and a simulation software. The VSD team’s cooperative actions reduced the evaluation and validation time with 65% then it was initially planned. The implementations were evaluated from the rump-up phase to the first serial productions and the results were confirmed by controlling and management