The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Software Defined Networking (SDN) and Network Function Virtualization (NFV) are catching the attention of telecom operators. Telecom environments establish a set of Carrier Grade requirements such as high availability, high throughput and low latency. To address these challenges SDN deploys logically-centralized controllers, such as ONOS and OpenDayLight. Based on the JAIN SLEE component model, which...
ITER control system model (ICM) is a currently developed simulation platform for control, data access, and communication (CODAC), which is a central control system responsible for integrating and controlling all plant systems of ITER. ICM is a large-scale implementation of CODAC that follows hardware and software standards but does not have any interfaces to other physical components of ITER. ICM...
A system for the excitation of numerous capacitive loads such as electroluminescent devices is presented. It is based on a controller equipped with up to 16 driver boards which are based on an arbitrary waveform generator. Besides the three template waveforms, any requested waveform can be generated by a Digital-to-analog converter whose output is amplified. Signals can be generated with up to 400...
This work presents the development of a remote laboratory service and its application during the teaching of Control Systems subject of third course in a Telecommunication Technology and Service Engineering degree. The application was successful allowing the student to control the same components as remotely, in a similar way as they were in the laboratory. There was an elevated interest by the students,...
Oil is one of the most important energy sources in the world, due to the uneven distribution of it, its transportation is an important step in the process of oil production. With the development of information technology, the traditional way of pipeline transportation has been unable to meet the requirement of high speed and high accuracy of product oil transportation process. A fuzzy PID control...
Software-Defined Networking (SDN) has great potentials in changing the fragile and complex enterprise networks. One operational challenge to SDN deployment is the settlement of legacy switches. A hybrid SDN consisting of both SDN and legacy switches may be a tradeoff. Nevertheless most of the current SDN control planes can not handle legacy switches. To overcome this problem, we present HybridFlow,...
The VR-1 reactor is operated by the Czech Technical University in Prague more than 20 years. The reactor is utilized mainly for education and training purposes. Therefore, the Czech Technical University, as a reactor licensee, makes an effort to continuously improve the reactor equipment, instrumentation and the educational and training methodologies. It is the way of providing an effective education...
Remora III, a 6,000-meter rated Remotely Operated Vehicle (ROV) designed, built, and operated by Phoenix International Holdings, Inc. (Phoenix), has performed extremely well during its 16 years of service as a search and recovery vehicle. While several mechanical upgrades have been made to the vehicle during this period, the desire to increase Remora's service capability and operational availability...
Cyber-Physical Systems (CPS) are yielding novel problems and solutions for security researchers. CPSs connect computerized controllers and human supervisors with physical systems used in the energy, transportation, water, manufacturing, and other sectors. Recent attacks against CPS have prompted unprecedented investigation into new threats and mitigations against CPSs. There are motivating examples...
In order to detect the nonlinear characteristics (flow hysteresis) of aviation fuel valves and to improve the accuracy and efficiency of fuel valve performance test, a computer aided fuel valve automatic test system is designed. The test system mainly consists of industrial control computer, data acquisition card, signal conditioning circuit and test software developed on the LabVIEW virtual instrument...
The main goal of this paper is to present a simple and inexpensive software solution for remote management of PTZ camera systems EVI-D70CP. Performed analysis demonstrates the technological solution for control of multiple cameras within lecture room or laboratory. Paper deals with the differences in the various serial communication methods, various functionalities of camera systems, followed by a...
This paper presents results of developing and operating a team of multiple unmanned aircraft system. It is a challenging task since the system complexity increases as the number of the unmanned aircraft increases. Given the autonomy of each vehicle in navigation, guidance, control, and vision-based missions, a system of multiple unmanned aircraft is constructed which is expected to be applied to complicated...
This paper describes the design of a medium size three-axis manipulator. The implementation of CNC control is also presented. The equipment has been designed and produced for the purpose of CNC systems teaching based on the electrical drives. The basis for the control system is an industrial computer. The Module with PWM outputs supplies the power to the drives of all three axes which have DC motors...
The National Spherical Torus Experiment (NSTX) is currently finishing a multi-year upgrade (NSTX-U) that vastly increased the capabilities of the system. These upgrades required an improved coil protection system to prevent immediate damage as well as fatigue over time to the magnetic coils that control the plasma. Because the action taken by the DCPS affects many other systems, NSTX-U will additionally...
In olden day's machine (lathe or milling machine) movements were operated by manual for that trained persons were required, the workspace and the no of axes were limited one. Productions of complicated parts were difficult and batch production also impossible. The dimensions between the parts were varied so to produce batch production, testing was required. So, the cost of production was increased...
This paper analyzes two existing methods for securing Git repositories, Git-encrypt and Git-crypt, by comparing their performance relative to the default Git implementation. Securing a Git repository is necessary when the repository contains sensitive or restricted data. This allows the repository to be stored on any third-party cloud provider with assurance that even if the repository data is leaked,...
The paper covers the period from 1966 to 1987 when the Research Institute of Electronic Machines (NIEM) -- the Research Centre of Electronic Computational Equipment (NICEVT) -- "Argon" NII" carried out works for providing mobile computer devices for "Maneuver" automated front troop control system. The author, being the primary constructor of "Beta-2" and "Beta-3M"...
Computation, networking and controls are in the midst of a true transformation. Previously it was assumed that delays in network communication would inhibit control systems from leveraging networked resources such as remote compute power. Now, industrial and residential applications of the Internet of Things force us to revisit principled deployment and support of distributed sensing and actuation...
As patients become more proactive about their health and turn to technologies such as the Internet to acquire knowledge, the patient-health care professional relationship has been changing. Traditionally, information has flowed from health care professional to patient, but change to a two-way dialogue is taking place. In this study, we examine a high level design of a perceived medical system and...
The correctness of PLC (Programmable Logic Controller) program in automatic control is vital to this kind of safety-critical applications. In this paper, we present a useful method of combinational testing for correctness of PLC programs. The method is based on the denotational semantics of PLC program and the semantic functions for basic instructions. It establishes the definition of denotational...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.