Principle Of Synchronization Research Articles

The Feeling of the Uncanny, Cruelty and the Principle of Synchronicity–A Case Study Based on Multiple Coincidences

A first and unique session is presented, in which the psychoanalyst experiences the feeling of the uncanny, as elaborated by Freud, in the context of a series of coincidences that bring forth the relationship between the internal and the external reality. Starting from the issue of the uncanny, one explores the way the limit between the internal and the external reality can be punctually and reversibly transgressed. The valences of the synchronicity principle are being discussed amid a scene of cruelty, as well as the relationship between cynicism and omnipotence: the principle of synchronicity is understood as an elaborative result of a regressive state.

The Research of Instruments for Allocating Cable Fault Based on the Priciple of Sound and Magnetic

The article aimed to research the accurate positioning when high resistance fault happened in cable fault. On the bases of Acoustic magnetic synchronous principle, the research benchmarked three orientation points as references and uses the differences between acoustic wave and magnetic wave to measure the distance between detection point and fault point. At last, used triangulation method to calculate the distance to the fault point based on the differences between acoustic signal and magnetic signal in order to locate the fault point.

Outer synchronization between uncertain complex networks based on backstepping design

In this paper, the outer synchronization between uncertain networks is investigated using the backstepping design. The adaptive laws of uncertain parameters and the structure of control input in the node of response network are determined based on the stability theory. The outer synchronization between networks can be realized only by putting a control input on one node of response network. Further, the effect of the synchronization principle is verified through a simulation experiment.

Solution Scheme for Time Synchronization of Current Differential Protection between Digital Substations

In digital substations with power transformers, the key to implementation of line differential protection is synchronization of electrical quantities at both two sides. System framework of current differential protection for lines between digital substations is analyzed briefly, as well as the necessity of demand for time synchronization. Principle of time synchronization based on GPS and IEEE1588 PTP (Precision Time Protocol) are introduced. Time synchronization of current differential protection between digital substations based on IEC61850 is discussed. This paper puts forward two solution schemes of time synchronization, analyzes their advantages and disadvantages respectively, and points out that the development direction of time synchronization of differential protection between digital substations is IEEE1588 PTP.

Synchronization System Design of Ground Electromagnetic Probe Based on FPGA and GPS

This paper presents a synchronization system of ground electromagnetic probe based on FPGA and GPS. In order to realize precise synchronization between transmitter and receiver, the paper uses the GPS module, the application of GPS-synchronized is a relatively good synchronization mode because of its independent of distance and topography. This paper makes the coordinated universal time of GPS and seconds pulse 1pps as the time reference, analyses synchronization principle and characteristics based on FPGA and GPS, designs time synchronization circuit, realizes the output of the synchronous enable signal. Finally it can realize the precise synchronization between a transmitter and several receivers.

A synchronization account of false recognition

We describe a computational model to explain a variety of results in both standard and false recognition. A key attribute of the model is that it uses plausible semantic representations for words, built through exposure to a linguistic corpus. A study list is encoded in the model as a gist trace, similar to the proposal of fuzzy trace theory (Brainerd & Reyna, 2002), but based on realistically structured semantic representations of the component words. The model uses a decision process based on the principles of neural synchronization and information accumulation. The decision process operates by synchronizing a probe with the gist trace of a study context, allowing information to be accumulated about whether the word did or did not occur on the study list, and the efficiency of synchronization determines recognition. We demonstrate that the model is capable of accounting for standard recognition results that are challenging for classic global memory models, and can also explain a wide variety of false recognition effects and make item-specific predictions for critical lures. The model demonstrates that both standard and false recognition results may be explained within a single formal framework by integrating realistic representation assumptions with a simple processing mechanism.

The Implementation of IEEE 1588-2008 Precision Time Protocol on the STM32F107

High precision clock synchronization is the basis for all applications in network-based distributed motion control system. To solve this problem, the clock synchronization principle is analysed; the initialization process of STM32F107VC PTP(Precision Time Protocol) hardware unit is introduced, and the process of capturing time stamp by PTP hardware unit, as well as clock adjustment mechanism, is in-depth dissected. PTPd v2 clock synchronization is realized in STM32F107VC platform supported by LwIP protocol stack. The results indicate that it is able to achieve an accuracy of less than 260ns clock synchronization based on STM32F107VC PTP hardware unit.

Ultra-resolution phase comparison method combining phase synchronous detection and common frequency source

With the improvement of frequency standard comparison and precise frequency and phase processing technique, the high-precision frequency measurement, phase comparison, phase locked loop and signal processing are necessary. Combining phase synchronous detection principle and common frequency source, an ultra-high resolution phase comparison method is presented in this paper. Using the concepts of the equivalent phase comparison frequency, group period phase processing, phase group synchronization and phase quantization step and so on, and the high stability of common frequency source, the resolution with picosecond or subpicosecond can be easily obtained and ±1 count error in traditional phase comparison approach can be eliminated. Experimental results show that the measuring precision better than femtosecond in one hour can be achieved in the long-term frequency standard comparison.

A Novel Super-High Resolution Phase Comparison Approach

With the improvement of the accuracy of atomic frequency standard and satellite navigation, the high-resolution phase comparison method is necessary. Using the phase synchronous detection principle, a super-high resolution phase comparison method between frequency standards is proposed based on the greatest common factor frequency, phase group processing and a common frequency source and so on. This method is mainly dependent on the stability of the common frequency standard and its frequency. The ±1 count error can be eliminated effectively. Therefore, higher than 1 ps resolution can be easily reached with a simple instrument. Experimental results show higher than 10−15/h precision can be obtained in the long-term frequency standard comparison and the measuring precision can reach 10−17 for several days of comparison.

A COMPRESSED SENSING FRAMEWORK OF FREQUENCY-SPARSE SIGNALS THROUGH CHAOTIC SYSTEM

This paper proposes a compressed sensing (CS) framework for the acquisition and reconstruction of frequency-sparse signals with chaotic dynamical systems. The sparse signal acts as an excitation term of a discrete-time chaotic system and the compressed measurement is obtained by downsampling the system output. The reconstruction is realized through the estimation of the excitation coefficients with the principle of impulsive chaos synchronization. The l1-norm regularized nonlinear least squares is used to find the estimation. The proposed framework is easily implementable and creates secure measurements. The Hénon map is used as an example to illustrate the principle and the performance.

Study on spatiotemporal chaos tracking synchronization of a class of complex network

Spatiotemporal chaos tracking synchronization of a class of complex network is studied. The structure of the coupling functions between connected nodes of the network and the range of the linear coefficient of separated configuration in the state equation of the node are obtained based on the extended Milosavljevic control law. Each node of the network is a unilateral coupled map lattice in which a square map with an exponential term constructed by extending the logistic map is taken as the local function, and simulation results show the effectiveness of the tracking synchronization principle.

The Safety Disassembling Principle of Ammunition Screw Parts and its Application

In the disassembling of ammunition screw parts, the explosion will happen when the ammunition parts heavily damaged by the screw driver. To solve the problem the synchronous backing principle is put forward, which is that the screw driver actively moves backward a screw pitch of the screw part when the screw driver turning a circle. According to the gap between the screw driver and the workpiece, the failure of the disassembly can be identified and the explosion can be prevented. Finally, a structure of the screw driver and the gap detection mechanism designed by the principle is suggested and some application examples are given.

A Summary on Algorithm Research of Synchronous Generator Excitation Control

To solve the problem that in excitation control system the parameters of proportional integral differential (PID) controller are difficult to be set, a summary on research results of current synchronous generator excitation control regulator parameters optimization. The article details the PSO algorithm of synchronous generator excitation control principles, and whose advantages and disadvantages. For the PSO algorithm converges slower early and late defects iteration, it introduces a new algorithm called adaptive chaotic particle swarm optimization (CAPSO), and using the chaotic tent mapping-based search methods to achieve improvements in partly-search, with a strong and robust search capabilities for the industry and scholars for reference.

Ground- and Triplet Excited-State Properties Correlation: A Computational CASSCF/CASPT2 Approach Based on the Photodissociation of Allylsilanes

Excited-state properties, although extremely useful, are hardly accessible. One indirect way would be to derive them from relationships to ground-state properties which are usually more readily available. Herewith, we present quantitative correlations between triplet excited-state (T₁) properties (bond dissociation energy, D₀(T₁), homolytic activation energy, E(a)(T₁), and rate constant, k(r)) and the ground-state bond dissociation energy (D₀), taking as an example the photodissociation of the C-Si bond of simple substituted allylsilanes CH₂=CHC(R¹R²)-SiH₃ (R¹ and R² = H, Me, and Et). By applying the complete-active-space self-consistent field CASSCF(6,6) and CASPT2(6,6) quantum chemical methodologies, we have found that the consecutive introduction of Me/Et groups has little effect on the geometry and energy of the T₁ state; however, it reduces the magnitudes of D₀, D₀(T₁) and E(a)(T₁). Moreover, these energetic parameters have been plotted giving good linear correlations: D₀(T₁) = α₁ + β₁ · D₀, E(a)(T₁) = α₂ + β₂ · D₀(T₁), and E(a)(T₁) = α₃ + β₃ · D₀ (α and β being constants), while k(r) correlates very well to E(a)(T₁). The key factor behind these useful correlations is the validity of the Evans-Polanyi-Semenov relation (second equation) and its extended form (third equation) applied for excited systems. Additionally, the unexpectedly high values obtained for E(a)(T₁) demonstrate a new application of the principle of nonperfect synchronization (PNS) in excited-state chemistry issues.

Initial Synchronisation of Wideband and UWB Direct Sequence Systems: Single- and Multiple-Antenna Aided Solutions

This survey guides the reader through the open literature on the principle of initial synchronisation in single-antenna-assisted single- and multi-carrier Code Division Multiple Access (CDMA) as well as Direct Sequence-Ultra WideBand (DS-UWB) systems, with special emphasis on the DownLink (DL). There is a paucity of up-to-date surveys and review articles on initial synchronization solutions for MIMO-aided and cooperative systems - even though there is a plethora of papers on both MIMOs and on cooperative systems, which assume perfect synchronization. Hence this paper aims to fill the related gap in the literature.

Hamiltonian structure of classical N-body systems of finite-size particles subject to EM interactions

An open issue in classical relativistic mechanics is the consistent treatment of the dynamics of classical N-body systems of mutually interacting particles. This refers, in particular, to charged particles subject to EM interactions, including both binary interactions and self-interactions (EM-interacting N-body systems). The correct solution to the question represents an overriding prerequisite for the consistency between classical and quantum mechanics. In this paper it is shown that such a description can be consistently obtained in the context of classical electrodynamics, for the case of a N-body system of classical finite-size charged particles. A variational formulation of the problem is presented, based on the N -body hybrid synchronous Hamilton variational principle. Covariant Lagrangian and Hamiltonian equations of motion for the dynamics of the interacting N-body system are derived, which are proved to be delay-type ODEs. Then, a representation in both standard Lagrangian and Hamiltonian forms is proved to hold, the latter expressed by means of classical Poisson Brackets. The theory developed retains both the covariance with respect to the Lorentz group and the exact Hamiltonian structure of the problem, which is shown to be intrinsically non-local. Different applications of the theory are investigated. The first one concerns the development of a suitable Hamiltonian approximation of the exact equations that retains finite delay-time effects characteristic of the binary interactions and self-EM-interactions. Second, basic consequences concerning the validity of Dirac generator formalism are pointed out, with particular reference to the instant-form representation of Poincaré generators. Finally, a discussion is presented both on the validity and possible extension of the Dirac generator formalism as well as the failure of the so-called Currie “no-interaction” theorem for the non-local Hamiltonian system considered here.

Upstream Synchronization and Simulation of EPON

Ethernet Passive Optical Network (abbreviated as EPON) has gained a lot of attention as an effective solution to broadband local access network. While it is a very cost-effective solution, it has some key technologies needed to develop, including upstream traffic synchronization. In the upstream direction, EPON is a multipoint-to-point network. In this paper, we present the principle and simulation of upstream synchronization, a process of finding a specific delay for every network unit, such that all upstream transmissions will arrive at the central office without collisions.

ChemInform Abstract: The Principle of Nonperfect Synchronization: Recent Developments

AbstractReview: 212 refs.

Towards a perspective of system synchronization in water governance: a synthesis of empirical lessons and complexity theories

In this manuscript we conclude the special issue on Water Governance. We look back on the different contributions and discuss different interesting insights from the three contributions focusing on Wisconsin, California and Southern Ecuador. We place these insights into a new perspective on integration, i.e. system synchronization, which the authors consider to be an option for integration in complex governance systems, where nobody is in charge.Points for practitionersIn this epilogue we have picked the fruits of the contributions to this symposium. We have come to another way of looking at the fragmentation—integration debate in public administration, i.e. system synchronization. By discussing different water cases from Wisconsin, California and Southern Ecuador, we have arrived at three principles of system synchronization: Synchronization means self-organization and variation; Synchronization means thinking and acting between self and the larger whole; Synchronization means operating on and beyond the boundaries of subsystems. These principles are needed to realize system synchronicity in which different subsystems largely hold their identity, but strive for coherence.

Parameter identification and synchronization of spatiotemporal chaos in uncertain complex network

Synchronization and parameter identification of a unidirectional star-network constructed by discrete spatiotemporal chaos systems with unknown parameters are studied. The synchronization principle of the network and design method of parameter recognition law are introduced. The function to be determined in the parameter recognition law and the range of adjusting parameter are obtained based on Lyapunov stability theory. Not only global synchronization of the network is realized, but also the unknown parameters in spatiotemporal chaos systems at the nodes of the network are identified. Discrete laser spatiotemporal chaos model is taken as each node of the network, and simulation results show the effectiveness of the synchronization principle and parameter recognition law.