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Recently, an efficient damped pseudo transient analysis method was proposed to find DC solutions for nonlinear circuits. However, the simulation efficiency is still not satisfactory. In this paper, for different kinds of circuits, we get some groups of PTRAN algorithm control parameters values by using a parameter optimization algorithm for pseudo-transient analysis to obtain higher efficiency during...
Paper analyzes harmonics during transient period of fault in a distribution grid and addresses the possibilities of using low order harmonics for detection of voltage dips during its transient stage. Detail and a comprehensive review of the literature is presented, as well as a major breakthrough in recent years for algorithms that using some form of harmonic transform for detection. The paper also...
In wireless sensor networks (WSNs), each sensor node can estimate the global parameter from the local data in a distributed manner. This paper proposed a diffusion estimation algorithm based on sub-regions, which are referred to as the SR-DLMS algorithm. The proposed algorithm divides the sensor network into several sub-regions, which used to estimate sub-dimensions of the parameter. Compared with...
This paper proposes a contribution to optoelectronic ultra-wideband transient waveforms generation. It describes a genetic algorithm (GA) development, a Photoconductive Semiconductor Switch (PCSS) characterization and optimization modeling. The genetic algorithm enables generation of arbitrary transient waveforms from specific spectral conditions. Experimental measurements have been carried out with...
This paper presents three implementation algorithms of compound elements pseudo-transient analysis to find DC solutions for nonlinear LSI circuits. In former researches, CEPTA was implemented in SPICE-like simulator with the merits that the size of Jacobian matrix is not expanded during the calculation. While the inserted pseudo parts are converted to some certain equivalent circuits, the conventional...
The objective of this work is to evaluate performance of three phasor estimation algorithms proposed in literature, under electrical system signals. Signals obtained from electrical systems response to disturbances in which the electrical system is stable or operates in a condition of transient instability, frequency or voltage. The performance during the transient state of the system is evaluated...
S. Lee, D. Choi and Y. Choi proposed an improved countermeasure algorithm of RSA cryptosystem with Chinese Remainder Theorem to prevent fault attack. In this paper, we introduce new fault attacks on their countermeasure algorithm. Our analysis shows that the attacker can obtain an erroneous signature by injecting some faults during the RSA signing computation. Thus the attacker can recover the RSA...
The paper is extension of result [16] and aimed to the adaptive control of uncertain linear plants under conditions of only quantized output measurement and bounded external disturbances. Quantizer with dynamical changing step is considered. Control law synthesis is based on consecutive compensator method. Kharitonov polynomials based tuning algorithm for controller parameters and quantization step...
The problem of quickest change detection (QCD) under transient dynamics is studied, in which the change from the initial distribution to the final persistent distribution does not happen instantaneously, but after a series of cascading transient phases. It is assumed that the durations of the transient phases are deterministic but unknown. The goal is to detect the change as quickly as possible subject...
Variability is one of the main and critical challenges introduced by the continuous scaling in integrated technologies and the need for reliable ICs. In this regard, it is necessary to take into account time-zero (i.e., spatial or process variability) and time-dependent variability (i.e., aging). While process variability has been extensively treated, considerable efforts are currently being made...
The article describes the synthesis of a control system of a hermetic electromechanical converter with respect to the complex security systems. We take into account the design features of the controlled object based on a fuzzy logic controller. We carried out the comparison of the transients which are character for the classical and fuzzy controllers with different algorithms.
We consider the problem of monitoring stochastic, time-varying events occurring at discrete locations. Our problem formulation extends prior work in persistent surveillance by considering the objective of maximizing event detections in unknown, dynamic environments where the rates of events are time-inhomogeneous and may be subject to abrupt changes. We propose a novel monitoring algorithm that effectively...
We propose a new algorithm for controlling the transient behavior of the tracking error for higher relative degree systems. When considering problems of tracking, controlling the transient behavior of the error is more important when compared to its derivatives. We introduce a concept of virtual output, which converts an arbitrary relative degree system into a relative degree one system. The virtual...
The main challenge associated with the analysis of power systems via the computation of reachable sets is improving the algorithmic efficiency to scale towards industrially relevant problem sizes. In this paper, we present a compositional algorithm that can drastically reduce the computational effort required to assess the dynamical response of power systems during transients using reachability analysis...
Article is devoted to the questions of improving work quality of regulators with proportional-integral-differential and proportional-integral laws of controlling technological processes. The quality classical law of regulation can be improved using non-linear control loop for the difference between the set value and the actual value. At a preliminary investigation phase two non-linear functions (polygonal...
The problem of transient quickest change detection (QCD) is studied, in which the change from the initial to the final phase does not happen instantaneously, but after a series of cascading transient phases of finite durations, each one corresponding to a different probability distribution. The goal is to design a stopping rule to detect the change as quickly as possible, subject to false alarm constraints...
In wireless ad hoc networks, neighbor discovery is essential for medium access control and routing. In this paper, we propose a new neighbor discovery algorithm utilizing in-band full duplex. This algorithm employs a reservation scheme with full duplex into an existing algorithm based on half-duplex. We analyze neighbor discovery time of both algorithms with absorbing Markov chain models and simulations...
We extend earlier work by Essick et al. [1,2] with a study of similarities among sky localization maps corresponding to gravitational-wave transients. Earlier in 2016, the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) announced the first direct observation of gravitational waves from binary black holes [3,4]. Motivated by the fact that multiple detection and localization algorithms...
In SDN, forwarding rules are frequently updated to adapt to network dynamics. During the procedure, path consistency needs to be preserved; otherwise, in-flight packets might meet with forwarding errors such as loops and black holes. Despite a large number of suggestions have been proposed, they take either a long duration or have high rule-space overheads, thus fail to be practical for large-scale...
This paper presents numerical methodologies for the robust, accurate and faster solution of the steady state free surface flows. Numerical solution of free surface flow problems using pressure based coupled solver is emerging trend in CFD community that allows implicit coupling of pressure, velocity and volume fractions and provides quiet robust and faster solution. Due to strong presence of body...
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