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Collection's Items (Sorted by Submit Date in Descending order): 21 to 40 of 57
Rath, Gerhard , Harker, Matthew
Global least squares solution for LTI system response

Linear time invariant (LTI) systems are the most important method to describe dynamic systems for the purpose of modeling, simulation and design of controllers. Dynamic systems are a process developing over time, hence the solution is an initial value problem (IVP). Solvers for ord...

Puričer, Pavel , Kovář, Pavel , Mikeš, Jan , Kákona, Jakub
Telemetry system for research stratospheric balloon

The paper presents telemetry system for stratospheric balloon mission based on the UHF transceivers designed for Internet of Things. The system operates in 869.5 MHz frequency band. The system uses very short packet without channel coding that can be successfully received and decoded&#x...

Pfeifer, Petr , Vierhaus, Heinrich Theodor
On implementation and usage of muller C-element in FPGA-based dependable systems

Muller C elements are key digital blocks especially used in asynchronous circuits and digital systems and correction of transient (glitch) errors. This paper presents an overview of implementation of Muller C elements in FPGAs. A new scheme is proposed in this paper and the im...

Pfeifer, Petr , Hosseinzadeh, Farnoosh , Vierhaus, Heinrich Theodor
On comparison of configurable encoders in Xilinx and Altera FPGAs

Encoders using generator polynomials and linear-feedback shift registers are the key parts of communication technologies widely used in most of today's integrated as well as field systems. This paper presents a detailed comparison of three ways of implementation of configurable encoders ...

Paulů, Filip , Hospodka, Jiří
GEEC: Graphic editor of electrical circuits

This paper presents web-based graphical schematic editor for analysis of electric and electronic circuits. It is a JavaScript application that uses Spice OPUS and Maple with PraCAn package as a computation engine. In case of linear circuits, results can be obtained in symbolic form...

Mihai, Oproescu , Bizon, Nicu , Iana, Gabriel , Birleanu, Florin , Lita, Ioan
Optimize of the long-term supply for a detection, vibration monitoring and recognition of the critical infrastructure protection system

In this paper is presented a solution for long-term power supply optimization implemented in a system for detection, monitoring and recognition of ground vibrations resulting from human activity to protect critical infrastructure. These systems must use besides conventional energy sources the...

Ondraczka, Lukáš , Ondraczka, Tomáš
Ultrasonic thermometry study and portable ultrasonic thermometer prototype

This paper presents an ultrasonic thermometry state of the art study and shows principle of the ultrasonic thermometry through experiments with an ultrasonic thermometer prototype. The study covers a brief ultrasonic temperature measurement research history and focuses on recent revelations in&#x...

Obermaier, Johannes , Specht, Robert , Sigl, Georg
Fuzzy-glitch: A practical ring oscillator based clock glitch attack

Clock glitches are useful in hardware security applications, where systems are tested for vulnerabilities emerging from fault attacks. Usually a precisely timed and controlled glitch signal is employed. However, this requires complex generators and deep knowledge about the system under attack.&#x...

Niedermaier, Matthias , Fischer, Florian , von Bodisco, Alexander
PropFuzz — An IT-security fuzzing framework for proprietary ICS protocols

Programmable Logic Controllers are used for smart homes, in production processes or to control critical infrastructures. Modern industrial devices in the control level are often communicating over proprietary protocols on top of TCP/IP with each other and SCADA systems. The networks in&...

Nagy, Lukáš , Chvála, Aleš , Stopjaková, Viera , Blaho, Michal , Kuzmík, Ján , Gregušová, Dagmar , Šatka, Alexander
Performance analysis of monolithically integrated depletion-/enhancement-mode InAlN/GaN heterostructure HEMT transistors

The paper addresses a top-down design flow of depletion-load digital inverter formed by monolithically integrated depletion-mode and enhancement-mode high electron mobility transistors (HEMTs) on common InAlN/GaN heterostructure grown on sapphire substrate. We describe the inverter design at transistor...

Mucha, Matthias , Mottok, Jürgen , Krämer, Stefan
Estimation of Worst Case Response Time boundaries in multi-core real-time systems

We address a novel probabilistic approach to estimate the Worst Case Response Time boundaries of tasks. Multi-core real-time systems process tasks in parallel on two or more cores. Tasks in our contribution may preempt other tasks, block tasks with semaphores to access global share...

Merz, Christian , Kupris, Gerald
Nonlinear large signal analysis of high Q RF energy harvesting circuits

The paper focuses on nonlinear analysis of high Q RF energy harvesting circuits. The analysis is made mathematically and by large signal simulation via Keysight Advanced Design System. The mathematical analysis of the nonlinear harvesting circuits is done by using the Galerkin method&#x...

Matoušek, David , Rejfek, Luboš
Practical aspects of realisation of negative charge pumps

A charge pump is DC/DC converter that produces a higher output voltage than power supply or generates a negative output voltage. Some variants of charge pumps work as voltage regulator, too. A charge pump is realised by capacitors, transistors and/or diodes. Therefore, some&#x...

Matoušek, David , Beran, Ladislav
Comparison of positive and negative Dickson charge pump and Fibonacci charge pump

An operation of electronic equipment is dependent on a power supply. Today, a trend of only one AC/DC adapter is used for supplying an electronic system. Thus, an electronic equipment with various power supply requirements uses some internal DC/DC converters. These DC/DC ...

Marek, Jan , Hospodka, Jiří , Šubrt, Ondřej
Description of the functional blocks for the cross-coupled charge pump design algorithm

This paper presents the circuit model that is used for the cross-coupled charge pump design algorithm. Symbolic description of the pump stage model as an analog functional block for high-voltage application is firstly discussed. Design process has been done by using simplified BSIM ...

Mánek, Petr , Begera, Jakub , Bergmann, Benedikt , Burian, Petr , Janeček, Josef , Polanský, Štěpán , Pospíšil, Stanislav , Suk, Michal
Software system for data acquisition and analysis operating the ATLAS-TPX network

A network of 15 Timepix pixel detectors was installed within the ATLAS experiment at CERN, Geneva. The network is capable of measuring the composition and spectral characteristics of the radiation fields in real-time. Its operation is managed by a dedicated software system. The pre...

Lin, Shuyue , Qi, Pengyuan , Lin, Jun , Zhao, Xiaowei , Weiss, George , Ran, Li
Experimental ripple suppression performance of a virtual infinite capacitor

We experimentally show the performance of a Virtual Infinite Capacitor (VIC) in suppressing the voltage ripple. VIC mainly uses a bi-directional DC-DC converter with only two small capacitors inside to mimic the filtering process of a large capacitor by applying suitable control algorit...

Kuo, Chao-Lin , Chang, Long-Yi , Kuo, Ying-Che , Lin, Chia-Hung , Lin, Kuei-Mei
Visual servo control for the underwater robot station-keeping

This paper presents a visual servo and fuzzy-PID controller to enable underwater robot station-keeping. Movements of underwater robots are easily disturbed by water flow or external factors in a deep-water environment. In this study, control systems are used to adjust the underwater rob...

Kubík, Zdeněk , Skála, Jiří
Stripline for electromagnetic susceptibility testing — Input impedance matching

This paper is focused on input impedance optimization of a stripline. The stripline for electromagnetic susceptibility testing represents a radiating structure which is composed of one active and one or more grounded conductors. The characteristic impedance of the stripline is given by ...

Kubík, Zdeněk , Skála, Jiří
Electrical properties optimization of stripline for EMC testing of automotive parts

This paper is focused on optimization of electrical properties of 50 ohm stripline which was described in international standard for the automotive industry ISO 11452-5. The standard shows the dimension of the stripline but information about impedance matching is missing - and this ...

Collection's Items (Sorted by Submit Date in Descending order): 21 to 40 of 57