18 results about "Coupling parameter" patented technology

A method to determine a location of a fault in a power network includes monitoring electrical measurements, receiving an indication of a presence of the fault; determining a first sequence mutual coupling parameter based on the electrical measurements, wherein the first sequence mutual coupling parameter indicates a mutual coupling of a positive sequence to a negative sequence of the power network, determining a second sequence mutual coupling parameter based on the electrical measurements, wherein the second sequence mutual coupling parameter indicates a mutual coupling of a zero sequence to the negative sequence of the power network, determining the location of the fault based on the indication of the presence of the fault, the first sequence mutual coupling parameter, and the second sequence mutual coupling parameter, and sending one or more commands to one or more devices to adjust one or more operations based on the location of the fault.

A method to determine a location of a fault in a power network includes monitoring electrical measurements, receiving an indication of a presence of the fault; determining a first sequence mutual coupling parameter based on the electrical measurements, wherein the first sequence mutual coupling parameter indicates a mutual coupling of a positive sequence to a negative sequence of the power network, determining a second sequence mutual coupling parameter based on the electrical measurements, wherein the second sequence mutual coupling parameter indicates a mutual coupling of a zero sequence to the negative sequence of the power network, determining the location of the fault based on the indication of the presence of the fault, the first sequence mutual coupling parameter, and the second sequence mutual coupling parameter, and sending one or more commands to one or more devices to adjust one or more operations based on the location of the fault.

A method to determine a location of a fault in a power network includes monitoring electrical measurements, receiving an indication of a presence of the fault; determining a first sequence mutual coupling parameter based on the electrical measurements, wherein the first sequence mutual coupling parameter indicates a mutual coupling of a positive sequence to a negative sequence of the power network, determining a second sequence mutual coupling parameter based on the electrical measurements, wherein the second sequence mutual coupling parameter indicates a mutual coupling of a zero sequence to the negative sequence of the power network, determining the location of the fault based on the indication of the presence of the fault, the first sequence mutual coupling parameter, and the second sequence mutual coupling parameter, and sending one or more commands to one or more devices to adjust one or more operations based on the location of the fault.

This invention provides a method for monitoring the condition of transmission lines. The method decouples and quantifies multi-segment conduction and multi-physical quantity coupling by constructing independent inter-segment topological conduction parameter systems and intra-segment multi-physical quantity coupling parameter systems. After two-level normalization of operational monitoring data, a comprehensive degradation index and evolution trend are generated. The dynamic residual degradation barrier is obtained by weighted integration of the influence of neighboring area conduction and the local degradation rate. A collaborative amplification factor is determined based on the degree of degradation. The gradually changing base and the amplified transient impact are superimposed to form a comprehensive risk value. The ratio of this value to the residual degradation barrier is used as the risk ratio. The state type and risk quantification results are output in conjunction with neighboring area constraints. This invention solves the problem in existing technologies where it is difficult to comprehensively handle the coupling effects of multiple factors and their dynamic evolution relationships during transmission line operation, leading to insufficient accuracy and reliability in condition assessment.

The invention discloses an optical fiber coupling efficiency improving method based on a bat algorithm. The method comprises the following steps that optical power data are collected and preprocessed; constructing a coupling parameter search space model; initializing an improved submerged space enhancement-bat algorithm, and outputting an initial coupling parameter vector; introducing countercurrent coding to generate a submerged space vector; calculating and outputting an optimal action vector through a differentiable strategy flow mapping mechanism; obtaining a current iteration optimal bat individual; outputting a coupling parameter vector of the global optimal bat individual; and the improved submerged space enhancement-bat algorithm is recalled to perform parameter optimization calculation, so that the optimization speed and the global optimal stability of optical fiber coupling are effectively improved, the coupling loss is remarkably reduced, and the automatic adjustment precision and the optical power stability of the system are improved.

This invention discloses a method for controlling multiple transparent windows based on a coupled-cavity opto-magnetic-mechanical system, comprising the following steps: Step 1: Building a physical model of the coupled-cavity opto-magnetic-mechanical system, including a YIG crystal with a microbridge structure, a microwave cavity, and coupled dual optical cavities; Step 2: The coupled optical cavity and microwave cavity are driven by a strong red detuned optical field and a microwave field, respectively; Step 3: Introducing two weak detection fields at two frequencies to detect the output responses of the two cavity modes; Step 4: Solving for the output spectra of the microwave cavity and optical cavity using the Langevin equations of motion; Step 5: Changing the system coupling parameters to achieve the fabrication of multiple transparent windows, fast and slow light, and Fano resonance phenomena. This invention solves the technical challenge of multiple transparent window coexistence by implementing multiple coupling mechanisms in one system, and utilizes multi-band transparent windows to achieve discrete signal processing, supporting multi-band quantum storage and multi-channel photonic information processing, thereby improving the efficiency and capacity of quantum information processing.

A kind of method for determining the actual ball size of a ball cage type universal coupling belongs to the technical field of ball cage type universal coupling design.The method is as follows: coupling parameter analysis;calculating the difference between the theoretical ball and the center of the ellipse and the difference between the actual ball and the center of the ellipse;calculating the actual ball center size.The present application combines mechanical expertise,analyzes the tangent of the elliptical orbit and the ball,according to the different situations of the inner planet wheel and the outer planet wheel,calculates the actual ball center size directly,avoids the repeated modeling work of three-dimensional model analysis in the prior art,significantly improves the measurement efficiency,enhances the universality of the method and expands the scope of application.

The invention discloses a structural circuit overall performance prediction method based on multi-scale simulation, and the method comprises the following steps: analyzing the material composition of a structural circuit, and constructing a composite dynamic model of the structural circuit; carrying out simulation analysis on the constructed composite dynamic model aiming at impact and shearing working conditions and temperature coupling working conditions in mechanical loads, and determining micromechanics-conductive coupling parameters of the structural circuit; constructing a macroscopic multi-physics field model of the structural circuit, importing the micromechanics-conductive coupling parameters into the macroscopic multi-physics field model, and setting structural mechanics boundary conditions, circuit working parameters and coupling damage criteria in the macroscopic multi-physics field model to obtain a simulation model of the structural circuit; and setting multi-working-condition simulation parameters, performing multi-scale coupling simulation on the simulation model of the structural circuit by using the multi-working-condition simulation parameters, obtaining stress distribution, a strain field and a damage evolution process of the structural circuit, and predicting the overall performance of the structural circuit.

The application provides a building outer wall defect detection method and system based on acousto-optic-thermal multi-physical field coupling, and relates to the technical field of intelligent nondestructive testing. The method comprises the following steps: according to the comparison result between the optical indexes of each region in the building outer wall image and the index conditions, candidate regions with defects are selected from multiple regions of the building outer wall image; a temperature change sequence of each pixel point collected during the application of sound excitation and thermal excitation to the outer wall region corresponding to the candidate region is obtained; time-frequency transformation and phase-locked analysis are performed on the temperature change sequence of each pixel point to obtain the thermal-acoustic coupling parameter and resonance intensity parameter of each pixel point; the defect type to which each pixel point belongs is determined; for multiple pixel points with the defect type of hollowing in the candidate region, based on the preset calibration relationship between the resonance peak feature and the hollowing depth and the bonding stiffness, the hollowing depth and the bonding stiffness are obtained by inversion according to the resonance peak feature of the multiple pixel points.

The application discloses a kind of based on bat algorithm's optical fiber coupling efficiency promotion method, including the following steps: collecting optical power data and preprocessing;Coupling parameter search space model is constructed;Improved latent space reinforcement-bat algorithm is initialized, and initial coupling parameter vector is output;Introduce reversible flow coding to generate latent space vector;The optimal action vector is calculated by differentiable strategy flow mapping mechanism and output;Current iteration optimal bat individual is obtained;The coupling parameter vector of global optimal bat individual is output;Improved latent space reinforcement-bat algorithm is recalled again to carry out parameter optimization calculation, effectively improves the optimization speed and global optimal stability of optical fiber coupling, significantly reduces coupling loss, improves system automation adjustment precision and optical power stability.

The invention provides a building outer wall defect detection method and system based on acousto-optic-thermal multi-physics field coupling, and relates to the technical field of intelligent nondestructive testing. The method comprises the following steps: screening candidate areas with defects from a plurality of areas of a building outer wall image according to a comparison result between an optical index and an index condition of each area in the building outer wall image; acquiring a temperature change sequence of each pixel point acquired during the period of applying acoustic excitation and thermal excitation to the outer wall region corresponding to the candidate region; performing time-frequency transformation and phase lock analysis on the temperature change sequence of each pixel point to obtain a thermoacoustic coupling parameter and a resonance intensity parameter of each pixel point; determining a defect type to which each pixel point belongs; and for the plurality of pixel points of which the defect types are hollowing in the candidate region, based on a preset calibration relationship between the formant characteristics and the hollowing depth and the bonding stiffness, carrying out inversion according to the formant characteristics of the plurality of pixel points to obtain the hollowing depth and the bonding stiffness.

The invention provides an SLCC converter fault detection method based on multi-module cooperation, and belongs to the technical field of power systems, and the method comprises the steps: collecting the electrical parameter data of each module of an SLCC, calculating a coupling parameter, and constructing an incidence matrix; dynamically updating the incidence matrix to obtain an updated incidence matrix; an SLCC topological graph is constructed; on the basis of the incidence relation of the topological graph, node features are updated through an iterative formula, and final target features are obtained; inputting the final target features into a trained linear classifier, and judging the fault type at the node i and at the (t + 1) th moment by the linear classifier; and continuing to obtain the updated incidence matrix along with the time, and judging the fault type at the node i at the next time through the linear classifier. According to the invention, accurate tracing of fault causes of multi-module cooperation is realized, and the problem that only a single fault module can be positioned and cross-module cascading fault causes cannot be identified in the prior art is solved.

The invention provides a VSG control method, device and equipment of an optical storage grid-connected system, and relates to the technical field of power systems. The method comprises the following steps: acquiring real-time operation data of the optical storage grid-connected system; the real-time operation data comprises direct-current bus voltage, active power and alternating-current frequency; based on the real-time operation data and a second-order voltage-frequency nonlinear coupling model of the direct current-alternating current side, performing nonlinear coupling analysis on the direct current bus voltage, the active power and the alternating current frequency to obtain coupling parameters; based on the real-time operation data and the coupling parameters, a pre-constructed objective function and a control equation are updated, and the control equation is a voltage-frequency coupling equation set representing the coupling relation between the direct current side and the alternating current side; based on the objective function and the control equation, performing iterative optimization to obtain an optimal control parameter; and controlling the VSG of the optical storage grid-connected system based on the optimal control parameter. The stability of the optical storage grid-connected system can be improved.

The invention discloses a multi-layer casing conductivity and magnetic conductivity inversion method, which belongs to the field of electromagnetic nondestructive testing, and comprises the following steps: determining a transient response expression of a multi-layer ferromagnetic casing under pulsed eddy current excitation by adopting a pulsed eddy current testing rapid analysis model; converting an electromagnetic parameter measurement problem of the multilayer ferromagnetic sleeve into an optimization problem, wherein the optimization problem aims at minimizing an error between an actually measured transient response and a theoretical transient response calculated by a transient response expression; solving the optimization problem by adopting a Gaussian-Newton method to obtain coupling parameters related to the conductivity, the relative permeability and the wall thickness of the sleeve; based on the known wall thickness of each layer of the multi-layer ferromagnetic sleeve, the coupling parameters and the wall thickness of the corresponding layer are calculated, and the conductivity and the relative permeability of each layer of sleeve are obtained; according to the sequence from the bottom of the well to the ground, operation is carried out on different levels in the multi-layer ferromagnetic casing in sequence, and inversion of the conductivity and the relative permeability of the casing of all the levels is completed.

The application discloses a construction method of a reserve pool platform based on coupled GaAs resonators, first introduces a coupling parameter, constructs a coupled resonator, and describes the dynamics of the resonator; then, a NARMA benchmark task is set to verify the performance of the constructed RC, to stimulate and drive the first resonator to drive the second resonator, and the amplitude of the second resonator is sampled as training data, and the output weight matrix W is obtained through a ridge regression algorithm out , and then the prediction value is obtained through the equation y(k) = W out S(k), and then the error between the prediction value and the true value is obtained by solving NMSE, and a heat map under different parameter configurations is drawn by NMSE. The application innovates the reservoir of the reserve pool, uses the coupled resonator as the reservoir, obtains the output weight matrix through the amplitude of the second resonator as the training data, and improves the performance of the reserve pool through rich nonlinearity.

The application discloses a micro-ring resonator time delay bandwidth product maximization method and system, the method comprises the following steps: obtaining a micro-ring resonator model, obtaining system parameters of the micro-ring resonator according to the micro-ring resonator model; inputting the system parameters of the micro-ring resonator into a DRRs-A3C algorithm model and running the DRRs-A3C algorithm model; obtaining the maximum time delay bandwidth product of the micro-ring resonator and the optimization parameter value corresponding to the maximum time delay bandwidth product according to the DRRs-A3C algorithm model. The micro-ring resonator model is first taken as a simulation environment of the DRRs-A3C algorithm, the parameters of the micro-ring resonator are optimized to obtain the maximum time delay bandwidth product and the corresponding coupling parameter value, the maximum time delay bandwidth product can improve the ability of the micro-ring resonator in optical signal processing, the parameter optimization result can be quickly converged through the DRRs-A3C algorithm model, and the convergence error is reduced.

The application provides a coupling and welding device and method for an optical fiber and a PD device, the coupling and welding device comprising a calibration module, a device stage, a fiber clamp, a coupling module, a welding module and a control system, the calibration module is used for detecting optical parameters of the optical fiber itself, the device stage is used for fixing the PD device, the coupling module comprises a fiber movement adjusting mechanism, the fiber movement adjusting mechanism is electrically connected with the control system, the fiber movement adjusting mechanism is used for being connected with the fiber clamp, the fiber movement adjusting mechanism is used for driving the optical fiber on the fiber clamp to pass through a shell interface of the PD device into a preset coupling area, and driving the optical fiber to couple, the control system is used for acquiring coupling parameters in the coupling process, and correcting the coupling parameters according to the optical parameters of the optical fiber itself, when the corrected coupling parameters reach a preset threshold, the fiber movement adjusting mechanism is controlled to stop coupling, and the welding module is used for welding and fixing the optical fiber and the shell interface of the PD device.

The application belongs to the technical field of array antenna signal processing, and particularly relates to a nested array antenna mutual coupling elimination method and device based on a mixed near-field and far-field source. e The method comprises the following steps: modeling array antenna receiving signals according to an unknown mutual coupling matrix, a near-field array flow pattern, a far-field array flow pattern, a near-field source, a far-field source and noise; constructing the unknown mutual coupling matrix C e from a unit matrix I and a mutual coupling parameter matrix C whose mutual coupling parameter is not 1; when the unknown mutual coupling exists, constructing a steering vector expression, and converting the steering vector into a form of a sum of two sub-matrices; constructing the mutual coupling parameter matrix C according to the steering vector, and then solving a DOA estimation value and a mutual coupling parameter estimation value through one-dimensional search on the DOA and the mutual coupling parameter; and compensating the unknown mutual coupling matrix C e by using the mutual coupling parameter estimation value to constitute an estimation value of the unknown mutual coupling matrix. The application estimates the mutual coupling parameter of the array antenna, thereby performing mutual coupling compensation, and realizing elimination of mutual coupling interference.