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 discusses the time synchronization issue in wireless sensor networks. An event-triggered average consensus time synchronization algorithm is proposed. This algorithm uses the average time message from one node's one-hop neighbors to update the clock parameters of the node. And it achieved acceptable synchronization accuracy. We also proposed an event-trigger mechanism to reduce the communication...
Problems with power quality in the grid have gained a lot of attention recently due to rapid increase in the amount of grid-connected power converters. The converter should produce sinusoidal currents also during abnormal conditions, such as unbalanced grid voltages. Several methods, like the delayed signal cancellation-based method (DSC), have been proposed to alleviate the detrimental effect of...
Pathological high-frequency oscillations (HFOs, 200–600 Hz) observed in depth-EEG and on scalp EEG recordings are recognized to be potentially valuable biomarkers of the epileptogenic zone responsible for generating seizures. Many research studies have been dedicated to detect, classify, simulate and understand the underlying mechanisms responsible for their generation. However, broadly classifying...
In this paper, the critical point that is a coupling strength at which the model changes from desynchronization to synchronization is solved by the mean field method theoretically and the phenomenon that with the increase of the mean value in the Gaussian distribution, the corresponding critical point is reduced is explained. Based on simulation and the theoretical results, the threshold of the mean...
Phase-locked loops (PLLs) are doubtless the most popular synchronization technique in the power converters. Almost all proposed PLL structures known in literature are inherently nonlinear and can be linearized as second order linear time invariant system. Nonlinear nature of PLLs degrades their performances, and question arises if there exist an enhanced PLL structure that would have superior performances...
The second-order Kuramoto oscillator models (KM) with diffusive and sinusoidal coupling were considered intensively in power networks. In this paper, the synchronization of an extended second-order Kuramoto oscillator model is studied using a parameterized approach. It is shown that the synchronization of the extended second-order KM is equivalent to the synchronization of a simple extended first-order...
Spintronic nanodevices — which exploit both the magnetic and electric properties of electrons — are a major break-through for nanoelectronics. The flagship device of spintronics, the magnetic tunnel junction, naturally provides a binary memristive device with outstanding endurance, high speed and low energy consumption. Interestingly, relying on the same physics as their use as memristive devices,...
The paper examines the work of the microgenerator inverter during two-phase short circuits. It has been shown that the cause of the oscillation is incorrect synchronization of the inverter. It has been demonstrated that the reduction of the oscillations can be achieved by adapting the synchronization signal to the representation of unbalanced system voltages.
Time synchronization, aiming to provide a common timescale among distributed sensor nodes, is a key enabling technology for many applications, such as collaborative condition monitoring and localization detection. Due to the complexity of time synchronization in wireless sensor networks, the Discrete Event Simulator is recommended to adopt resulting from the feature that the behavior of a complex...
Novel schemes of powerful multichannel planar FEMs was developed based on two parallel sheet beams 0.8 MeV / 1 kA forming by the accelerator ELMI. In 75 GHz frequency band two-channel planar FEM operating with two-dimensional distributed feedback was elaborated. For record transverse size of interaction space (up to 45 × 2.5 wavelengths) synchronization of emission from both electron beams and realization...
In this study, phenomena observed in scale-free coupled circle map are investigated. The circle map is a one-dimensional discrete-time dynamical system which exhibits various kinds of behavior as the parameters change. As the high-dimensional coupled circle map, the coupled map lattice and the globally coupled map have been studied. However, the scale-free coupled circle map has not been well investigated...
Modelling nonverbal communication in robotics is a crucial issue to improve Human Robot interactions (HRI). Among several nonverbal behaviours we focus in this article on unintentional rhythmic entrainment and synchronization which has been proven to be highly important in intuitive and natural Human Human communication. Hence, the rising question is whether or no this phenomenon can be reproduced...
Emotions are considered by many researchers as beneficial elements in social robotics, since they can enrich human-robot interaction. Although there have been works that have studied emotion expression in robots, mechanisms to express emotion are usually highly integrated with the rest of the system. This limits the possibility to use these approaches in other applications. This paper presents a system...
This paper focuses on the synchronization of coupled harmonic oscillators based on edge-event-triggered control. With periodic event detection and quantization, an edge-event-detecting algorithm is developed to determine the event times of each oscillator. In the proposed protocol, only relative state information is utilized to update all controllers, and the edge events are asynchronous with respect...
Artificial neural networks are intensively used to perform cognitive tasks such as image classification on traditional computers. With the end of CMOS scaling and increasing demand for efficient neural networks, alternative architectures implementing neural functions efficiently are being studied. This study leverages the demonstrated frequency tuning capabilities of compact nano-oscillators and their...
In order to ensure the strict time synchronization between devices, to achieve the purpose of precise timing control and distributed control and resource sharing, we propose a bridging technique for ARINC659 backplane bus connection between different devices. The bridging technology ensures that the ARINC659 bus is physically independent and can logically take concerted action in step so that the...
This paper aims to analyze the synchronization phenomena in the system consisting of n identical metronomes on a hanging plate by using the describing function (DF) method, which deals with the driving torque as a discontinuous function of the angle and angular velocity of each metronome. Different from a previous study on the synchronization of the system with the first harmonic of the angle of each...
This paper aimed to verify the effectiveness of the wearable robotic system “curara” for patients with spinocerebellar degeneration (SCD) by evaluating walking smoothness. The curara system supports the wearer's gait using a synchronization control method that uses a neural oscillator based on a central pattern generator network. The system reflects the motional intention by adjusting the synchronization...
In this study a numerical cryptanalysis of a random number generator (RNG) which is built on a continuous-time chaotic oscillator is introduced. In order to scrutinize the security weaknesses of the RNG, a master-slave synchronization approach is presented as the basis of an attack scheme. By proposing this attack scheme, it is aimed to verify whether there exist any possibility to divulge the hidden...
An innovated evolving network representation model to characterize weighted, complex, scale-free networks is proposed. A new node or a community is added to network in the process of evolution while emergences of new links occur according to the ‘Triad Formation’ possessing symmetry and the random selection mechanism. A weighted scale-free network with high-value clustering coefficient can be obtained...
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.