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.
This paper presents a new approach developed in order to provide a better design solution for the 110–123 kV, SF6 type switches. Having an efficient computer based tool for the design of such important equipment it's always a challenge for any high voltage equipment manufacturer worldwide. We have to mention, in the first part of the paper, the particular technical characteristic of SF6 HV switches...
The development of the technical devices of today is nearly impossible to follow. From all of these devices, drones received the highest publicity. The results of this fast-paced development is certainly favourable to hobby aviators and professional users as well. However this fast spreading brings up many questions on the technical side, for example the safe and stable communication is concerned...
Communication and possibilities of flexible manufacturing systems control through a variety of communication protocols are described in this article. The main core of the article is to design robotic cells control by using the standard Ethernet (non-RT) while maintaining safety and quality of production, and the system is able to dynamically respond to changes in the production process. The core of...
This paper presents an application for managing education by creating presence lists. An administration application has also been created in order to allow manipulating with the content of the enumerables in the presence lists. Overviews of possible solutions are presented. Our main motivation was to provide secure and reliable way of evaluating student attendance on specific lectures. In order to...
In architecture, in special tasks of industrial robotics applications, in navigation and control systems of military technology, in solution for manipulation problems of space exploration in many cases we have to deal with definition, measurement of specified points of space. From measurement technology point of view, it is regarded as a classical solution to solve a problem by application of calculation...
Mental disorders, such as schizophrenia, are accompanied by increased morbidity and mortality rates, potentially reducing the lifespan of patients by up to 10 years. Premature deaths in schizophrenia sufferers are caused mainly by cardiovascular diseases and complications related to excessive weight gain and type 2 diabetes mellitus. Gaining weight is, furthermore, often a side effect of medicine...
In comparison with the assistance of blind and visually impaired people, more research is being conducted in the area of advanced driver assistance systems. Motivated by this fact, we aim at using the advances in camera based driver assistance for the assistance of blind and visually impaired people by developing a concept for the transfer of object detection algorithms in the traffic domain. In this...
In a wide class of robots of open kinematic chain the inverse kinematic task cannot be solved by the use of closed-form analytical formulae. On this reason the traditional approaches apply differential approximation in which the Jacobian of the — normally redundant — robot arm is "inverted" by the use of some "generalized inverse". These pseudo-inverses behave well whenever the...
Óbuda University wanted to publish public information related to the university in the form of Linked Open Data. Information about subjects, courses, events and teachers are successfully published using the related standards. We had to collect and categorize the sources where information come from; define a way for each category to make these information available; and develop algorithms and softwares...
Controller design based on Linear Parameter Varying (LPV) and Linear Matrix Inequality (LMI) combination can be extremely useful in modeling and controller design for patient specific physiological systems, which are generally nonlinear, time varying systems. These methods allow us the usage of considerations which come from the linear controller design theorems, but require advanced mathematics and...
Up to now the fundamental tool of adaptive nonlinear control design is Lyapunov's 2nd or "Direct" Method. Recently the Sigmoid Generated Fixed Point Transformation (SGFPT) has been introduced for evading the application of the Lyapunov technique. This systematic method has been presented for the generation of whole families of Fixed Point Transformations and has been extended from Single...
The task to distinguish between soft tissues by testing their mechanical properties is often referred to as the primary cognitive role of haptic devices. It is a common view that today's surgical simulators that are using haptic interfaces should rely on simple mechanical models of soft tissues, instead of complex, parameterized finite element models, thus enhancing real-time operation and focusing...
In this paper, a Simulink model for the robot navigation in unknown environment is presented. The robot navigation is handled by two controllers: pure pursuit and fuzzy logic controller. The pure pursuit controller computes a direct path from start to goal position without considering the obstacles in the path. For obstacle avoidance in robot navigation, the fuzzy logic controller is taken. This fuzzy...
The computer-based cell and tissue analysis has always been an active area of healthcare informatics, but the popularity has greatly increased since the evolution of hardware. The process began about a decade ago, and since then it has become a key research area in medical informatics. Over the years various approaches were attempted by the developers, these are mostly based on the properties of the...
In the past few years quadcopters have become an integral part of life. There are many applications for these objects including entertaining purpose, agricultural monitoring, or gathering information from places what humans can not reach. An interesting problem is controlling these vehicles from remote locations in order to follow a desired trajectory. While many solutions exist to this task the vast...
The implemented system automatically capable of annotating images of a database based on samples. The system creates annotations to images with detection of the object belonging to the keyword. The set of keywords is predefined. After the user searching the first twelve relevant results will be showed. Due to the higher accuracy of the system, the user has to comment results then the system has to...
This paper features a software system called ∞Exarns (InfinityExams) which supports (primarily in higher education) paper-based examination and makes it easier, more comfortable and speeds up the whole process while keeping every single positive attribute of it but also reducing the number of negative aspects. The approach significantly differs from the ones used in the previous 10+ years which were...
Behavior Modeling is always a attentive task in the complex product modeling. It is difficult to monitor different kind of behavior of a product in the physical environment. In the RFLP (Requirement Functional Logical Physical) structure, behavior modeling is accomplished in Function and Logical level. There are several ways to monitor the behavior of a product. In this paper, author made an effort...
This paper presents a mathematical model of heat production, exchange and accumulation during ethanol generator at small-scaled fermentor tanks in home wineries or breweries. Heat generation is directly related to CO2 production rate, which serves as a time-dependent input parameter of the model, as well as the actual ambient temperature. Validation at pilot scale experiments showed good agreement...
This paper presents the current progress in acquiring and analyzing the data, obtained from smartphone sensor measurements during a drive with a car. The main aim of the research is to create generic rules to identify road state and its quality. Previously, the mobile application has been created, and measurements began. Currently, we acquired data from more than 500km of daily driving and created...
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.