29results about How to "Improve simulation speed" patented technology

The invention discloses an accelerated simulation method of a gradient period polarization holographic grating and a related device, and the method comprises the steps: carrying out the D (kin) calculation of the direction of predicted incident light after passing through a grating layer, multiplying a calculation result with the amplitude of the corresponding incident light, calculating the diffraction efficiency, and carrying out the acceleration simulation of the gradient period polarization holographic grating. Compared with a traditional simulation method using complete strict coupling wave calculation, the method has the advantages that the process operation of multiple integration, matrix multiplication and matrix inversion is reduced, and the simulation speed can be greatly accelerated.

The invention discloses a rotary kiln multi-physical phenomenon numerical simulation method based on artificial intelligence reasoning, and relates to the technical field of rotary kiln multi-physical phenomenon simulation. On the basis of an Euler multiphase flow equation, a heat transfer model, a chemical kinetic reaction model, a particle growth model, a chemical reaction model and the like are added; establishing a three-dimensional numerical model capable of accurately simulating multiple physical and chemical phenomena such as gas-solid two-phase flow movement, combustion, NOx generation, clinker calcination and particle growth in the rotary kiln; a long-short-term memory neural network is introduced to build an AI model, the AI model is used for predicting the working condition of the second half section of the model, the simulation speed is increased, and long-time simulation of the rotary kiln is achieved.

The present invention relates to the technical field of hydroelectric units, and is an ADPSS-based turbine isolated grid control parameter verification device and a method of use, including an ADPSS simulation platform simulating and outputting a grid frequency signal, and receiving a power signal output by a hydroelectric unit speed governor simulation platform for iterative calculation; the hydroelectric unit speed governor simulation platform combines the grid frequency signal simulation to determine the guide vane opening signal, and converts the guide vane opening signal into a power signal; a transmission device builds a communication link between the ADPSS simulation platform and the hydroelectric unit speed governor simulation platform. The present invention improves the simulation speed and authenticity of the hydroelectric unit speed governor in an isolated grid mode through the heterogeneous parallelization of an FPGA module, a physical interface box, and a turbine speed governor simulation platform, and solves the problem that when the current turbine isolated grid control parameter setting uses a frequency step disturbance, only a step amount of a given step length can be used, and there is no effective interaction between the turbine and the grid.

The application provides a multi-platform cooperative control system and method based on adaptive cruise, comprising a state monitoring platform, an intelligent ticketing platform, a digital twin platform, a dispatching platform and a response review platform; the state monitoring platform obtains real-time operation data of a target power grid through a distributed sensor network and outputs a state diagnosis result; the intelligent ticketing platform automatically generates an operation ticket based on a power grid knowledge graph; the digital twin platform constructs an adaptive dynamic simulation model using the real-time operation data and the state diagnosis result, and simulates and verifies the operation ticket; the dispatching platform dispatches network orders to power grid equipment according to the operation ticket and the simulation verification result; and the response review platform reviews and verifies the state after the dispatching. Through the construction of a multi-platform cooperative control mechanism and the establishment of an adaptive dynamic simulation model, the simulation accuracy and speed are improved, and the safety of the power grid and the efficiency of power grid dispatching are further improved.

The invention discloses an electromagnetic transient simulation method, system, equipment and medium based on an error compensation variational algorithm, and belongs to the technical field of electromagnetic transient simulation, and the method comprises the steps: obtaining discrete node electrical parameters of a power system, building an electromagnetic transient equivalent model based on the parameters, and building a loss function; preparing a quantum state representing node voltage through the parameter-containing quantum circuit, calculating a function value of a loss function by using a measurement result of the prepared quantum state, and iteratively updating a variational parameter of the parameter-containing quantum circuit by using the function value; obtaining a measurement result of the quantum state enabling the loss function to converge, and obtaining a solved voltage; and calculating a residual error for error compensation by using the target equivalent admittance matrix, the injection current of the node and the solved voltage, correcting the solved voltage by using the residual error, and obtaining the corrected voltage as an electromagnetic transient simulation result at the current moment. According to the method, calculation errors caused by a current noise-containing quantum computer are relieved, and high-precision solving of the linear equation set is achieved.

The invention discloses a transmission line decoupling simulation acceleration method and system, and the method comprises the steps: carrying out the decoupling of transmission lines between internal combustion engines and between the internal combustion engines and energy storage through the natural decoupling characteristics of the transmission lines, and obtaining a transmission line decoupling characteristic equation; constructing a transmission line decoupling circuit model through the transmission line decoupling characteristic equation; and based on a transmission line decoupling circuit model, independent simulation solution is carried out through voltage and current information interaction. According to the method, the calculation complexity of reconstruction and inversion calculation of a high-order matrix is avoided, the calculation amount during system calculation is reduced, and the electromagnetic transient simulation speed is increased.

This invention provides a non-uniform discrete equivalent circuit modeling method and system for electromigration reliability. It employs an equivalent circuit-based approach to analyze the electromigration stress evolution of general complex interconnect structures, fully considering thermal field effects in the model. This achieves equivalent circuit modeling for stress analysis under multi-physics coupling. Furthermore, by using an adaptive mesh method with non-uniform spatial discretization and a steady-state / quasi-steady-state filtering mechanism, it solves the problem of wasted computational resources in traditional uniform discretization methods when dealing with large-span interconnect structures, and avoids unnecessary transient simulations of immortal interconnect trees, reducing the computational load of full-chip-level analysis. This enables efficient and high-precision transient analysis of the electromigration reliability of large-scale interconnect networks under multi-physics coupling effects.

The application discloses a near-field equivalent method, a mask 3D near-field correction method and a storage medium. The optical near-field equivalent method comprises the following steps: setting a three-axis coordinate system, so that the initial propagation direction of a light source with a preset angle is propagated along a first axis, and an initial wave vector and a polarization direction are obtained; performing a rotation operation on the initial wave vector and the polarization direction according to the preset angle of the light source; analyzing the polarization direction and the polarization vector of the light source after the rotation operation; rotating the polygon and the light source according to the preset angle of the polygon, so that a new wave vector and a corresponding rotation angle are obtained; analyzing the polarization direction, the polarization vector and the component of the light source after the second rotation operation; generating an edge near-field under equivalent conditions by using a 2D strict electromagnetism algorithm; and performing linear superposition according to the respective components based on the polarization direction of the light source after the second rotation operation, so that an equivalent near-field result is obtained. The application reduces the calculation burden of near-field generation.

The application provides a hardware perception-based model quantization method, system, medium, product and terminal, a hybrid execution mechanism is constructed between a high-level software framework and a bottom layer hardware behavior model, only core calculation operators in a quantization calculation graph of an initial quantization model which need to be executed on target hardware are handed over to a hardware behavior model for bit precision simulation, real calculation characteristics of the target hardware are simulated in a quantization process, and other auxiliary, non-computation-intensive operators are reserved in the high-level software framework for execution, so that the simulation verification efficiency is improved, the simulation precision and the execution efficiency are considered, and the goal that the quantized model runs more efficiently and has lower precision loss on the target hardware is achieved.

The invention relates to a fast simulation system and method based on target online reconstruction, the system comprises a task computer, a local area network system and a ground station system, the ground station system issues task information to the task computer, and the task computer feeds back a flight state and a task execution state and result to the ground station system. Meanwhile, the ground station system is used for displaying a flight route, a state and a task effect; a task machine in the task computer issues a real-time task point and a task instruction to the simulation machine, and the simulation machine feeds back real-time state information to the task machine; and the task computer and the ground station system communicate through the local area network system to complete data link transmission. A digital map in a task computer is preprocessed, waypoints of the digital map are subjected to small-scale conversion, the simulation speed is further increased, meanwhile, an aircraft model in a task computer simulation module and a task planning module in a ground station system can be rapidly modified and replaced at any time, the efficiency of the simulation system is improved, and the simulation cost is reduced. And the actual adjustment requirement of target online reconstruction can be met to the greatest extent.

The present application relates to a sintered grinding wheel grinding surface morphology simulation control method, device, equipment and medium, the method comprising: according to the external vertices of random abrasive particles located in the circumference of the first retained abrasive particles, the volume of the convex polyhedron of the random abrasive particles is calculated and determined, and the random abrasive particles are determined as interference abrasive particles and removed according to the volume of the convex polyhedron to determine the second retained abrasive particles in the binder unit; according to the multiple first vertices of the random abrasive particles in the circumference of the second retained abrasive particles, the multiple second vertices of the second retained abrasive particles in the circumference of the random abrasive particles, and the characteristic surfaces constructed by the multiple characteristic vertices and the second vertices, the random abrasive particles are determined as interference abrasive particles and removed to determine the third retained abrasive particles in the binder unit, to determine multiple sintered grinding wheel unit cells of different grinding wheel concentrations, and to construct a sintered grinding wheel of target grinding wheel concentration using multiple sintered grinding wheel unit cells of different grinding wheel concentrations for simulation. The present application greatly improves the accuracy of the sintered grinding wheel.

The present invention relates to a method and system for establishing an equivalent model of a doubly-fed wind turbine group. Based on the low voltage ride-through characteristics of the doubly-fed wind turbine group, the active power and reactive power of the doubly-fed wind turbine group during the low voltage ride-through period are adjusted, which can not only suppress the doubly-fed wind turbine group from being disconnected from the grid at overspeed during the LVRT period, but also ensure that the doubly-fed wind turbine group provides reactive power support to the power grid during the LVRT period in accordance with the requirements of the National Standard of the People's Republic of China GB / T36995‑2018 "Test Procedure for Fault Voltage Ride-through Capability of Wind Generator Groups". On this basis, a doubly-fed wind turbine group equivalent method is proposed. The method reduces the order of the doubly-fed wind turbine group model, and can improve the simulation speed while ensuring the simulation accuracy.

The invention relates to a radio frequency electrode simulation method and device, computer equipment and a storage medium, the method is applied to a periodic electrode, and the method comprises the steps that a three-dimensional electrode model is established according to the type of a radio frequency electrode needing to be simulated; establishing a simulation model according to the three-dimensional electrode model; performing simulation according to the simulation model and a first formula to obtain a plurality of design parameter groups; acquiring a simulation result of the radio frequency electrode needing to be simulated according to the plurality of design parameter groups, the first formula and a screening condition; wherein the three-dimensional electrode model comprises electrodes with boundary conditions and a preset number of periods, and the preset number of periods are one period or a half period. According to the invention, the simulation speed can be improved.

The invention provides a sequential circuit hybrid fault simulation method, which is used for simulating a sequential circuit fault coverage rate by injecting a fault point into a sequential circuit, and comprises the following steps: S1, obtaining a to-be-simulated circuit netlist, identifying a strong connection component in the to-be-simulated circuit netlist, and marking the strong connection component meeting a preset small-scale strong connection loop constraint condition; s2, performing simulation of multiple periods on the marked circuit netlist to be simulated, and executing in each simulation period: S21, performing code compilation on the marked strong communication components so as to fuse each marked strong communication component into a compilation node, performing compilation type simulation on each compilation node until the state converges, and performing simulation on the compilation node until the state converges; the topology is updated, and the output of each compiling node is used as an event to be transmitted to other areas in the circuit netlist; and S22, taking other areas except the compiling node as event driving nodes, simulating residual circuits in an event scheduling mode, and updating the state of the circuits.

This invention discloses a five-level active midpoint clamping circuit structure and design method based on an average model. Ignoring redundancy, the five-level active midpoint clamping circuit structure based on the average model includes two controlled voltage sources, two controlled current sources, two DC bus capacitors, and a floating capacitor. The series and parallel connection of the controlled voltage and current sources is shown in the attached figure of the abstract. The current of the controlled current source is determined by the output current of the five-level circuit, and the voltage of the controlled voltage source is determined by the positive and negative voltages of the two DC bus capacitors. This invention can simulate the voltage fluctuation of a five-level active midpoint clamping circuit switching model. It considers the impact of voltage fluctuations on the AC side and can control the voltage fluctuation of the five-level active midpoint clamping circuit within a reasonable range. It has strong versatility and greatly improves simulation speed.

The present invention discloses an accelerated iterative simulation method for HVAC airflow organization based on a multi-grid method, and relates to the technical field of HVAC airflow organization simulation. The method comprises: obtaining system information and a first three-dimensional model of a target HVAC system; performing hierarchical half-edge conversion based on the first three-dimensional model to generate half-edge structure data; generating a non-fitting grid based on the first three-dimensional model and the half-edge structure data, and simultaneously or afterwards, generating a fitting grid based on the first three-dimensional model and the half-edge structure data; establishing a nonlinear partial differential equation of the target HVAC system based on the system information, the non-fitting grid, and the fitting grid, solving the equation using a multi-grid method, and generating a simulation result of the target HVAC system. The present invention effectively improves the efficiency and accuracy of HVAC airflow organization simulation by using technical means such as a multi-grid method, hierarchical half-edge conversion, and dynamic threshold adjustment.

The invention relates to a high-efficiency electromagnetic transient modeling method for a hybrid high-voltage direct-current power transmission system containing an IGCT (integrated gate commutation current transformer), and belongs to the field of electric digital data processing. The IGCT high-voltage direct-current power transmission system comprises a power grid commutation current transformer at a sending end, an IGCT current transformer at a receiving end and a direct-current power transmission line between the power grid commutation current transformer and the IGCT current transformer; the efficient electromagnetic transient modeling method comprises the following steps: at a power grid commutation current converter at a sending end, simplifying the switching operation of a thyristor into a port voltage and current average value model by adopting an averaging modeling method, thereby improving the simulation efficiency of the current converter at the sending end; a Thevenin equivalent method is adopted at the IGCT current converter of the receiving end, and an IGCT switch is dynamically simplified into a Norton equivalent circuit model of a current source and impedance, so that the simulation efficiency of the current converter of the receiving end is improved; for a direct current transmission line between transmitting and receiving end converter stations, a Bergeron model is adopted to decouple the two ends of the whole line, so that the electrical response of the two ends can be processed independently, the complexity of mutual coupling of the two ends of the line is reduced, and the calculation process is simplified.

The invention discloses a dominant broadband oscillation order reduction method suitable for a network tracking / constructing type hybrid wind power plant. The method comprises the following steps: firstly, establishing a full-order small-signal model of the hybrid wind power plant, and identifying a dominant broadband oscillation mode in combination with an energy contribution degree and a controllable observability criterion; secondly, state variable division and order reduction modeling are carried out based on the singular perturbation principle, and the calculation complexity is reduced while the dominant modal precision is kept; and finally, model simplification and dynamic characteristic consistency are realized through module interface matching and stability verification. According to the method, the reduced-order model of the hybrid wind power plant can be quickly obtained under the condition that main dynamic characteristics are not influenced, and reliable technical support is provided for broadband oscillation analysis and control optimization of a power system.

The application discloses a kind of data-driven wind farm collection line fault section positioning method, comprising: S1 based on unit speed-up model constructs full topology wind farm model, for wind turbine configuration high / low voltage ride-through control strategy obtains real fault response;S2 establish large-scale batch simulation process of automation interface control, randomization set wind speed and fault parameter, extract transient waveform and generate balanced dataset;S3 wind farm is mapped as graph structure, extract each node voltage and line edge current low-dimensional steady-state feature and high-dimensional time sequence instantaneous fragment;S4 utilize sequence encoder to compress the representation of time sequence feature, combined with message passing graph neural network dynamically generates convolution kernel by edge feature;S5 splice updated node and edge feature, input prediction network to line section is normalized score.This application can generate high-fidelity dataset with high efficiency, and realize high-precision fault section positioning under complex wind farm topology by graph network fusion edge time sequence feature.

The embodiment of the invention provides a code model generation method, a code model verification method and a related device.The code model generation method comprises the steps that an original code model is obtained, and the original code model comprises at least one attribute; based on the original code model, determining called attributes of the original code model in a simulation verification process; and according to the called attribute, selecting a code for realizing the called attribute to form a target code model. And a more concise code marking model can be obtained. Therefore, if the target code model is used in the simulation verification process, the operand during simulation operation of the original target code model is reduced, the simulation speed in the simulation verification process is increased, and the simulation verification efficiency is improved.

The present invention discloses a broadband electromagnetic simulation method using efficient adaptive interpolation, adopting an improved frequency sweeping method based on Lagrange matrix rational interpolation, and a new convergence criterion, taking into account the slope between two adjacent frequency points between the previous interpolation and the current interpolation of S parameters and Y parameters. By combining matrix rational interpolation and dichotomy frequency scanning, not only can the entire frequency range be interpolated using a few sampling frequency points and frequency responses, but also the result will be more accurate due to the adoption of a new convergence criterion, especially for the problem of rapidly changing frequency response.

The invention discloses a total-factor multi-scene acceleration simulation method for a digital-real fusion test, which belongs to the field of digital test verification of high-end equipment, and comprises the following steps: analyzing a test object, proposing a test demand / target and a performance index, and formulating a preliminary test implementation scheme; according to an analysis result, constructing a geometric model and a mechanism model of the test object; performing multi-dimensional model joint simulation operation to realize multi-dimensional simulation data acquisition and acquisition; carrying out physical data acquisition and historical data collection, and combining simulation data to realize fusion and enhancement of data real test data; carrying out dimension reduction on high-dimension data by utilizing a data dimension reduction method so as to extract key features; based on the obtained dimension reduction data and the test object model, constructing a deep learning simulation acceleration network and carrying out training and optimization; and inputting a test object total-factor simulation model and a test full-scene model to realize total-factor multi-scene simulation acceleration and result prediction. According to the invention, total-factor multi-scene accelerated simulation is realized, and the test efficiency is improved.

The invention provides a GPU architecture simulation method and device, computer equipment and a medium, and relates to the technical field of hardware simulation, the simulation method comprises the following steps: monitoring operation indexes of a plurality of function modules in a preset time window; calculating a hotspot score of the function module according to the operation index; for each functional module, comparing the hotspot score of the functional module with a preset threshold value, and determining a simulation mode adopted for the functional module based on a comparison result; in response to determining that the fine simulation mode is adopted to simulate the functional module, updating an internal state machine of the functional module cycle by cycle; and in response to determining that the fast forward simulation mode is adopted to simulate the functional module, deriving an equivalent delay of the functional module, and crossing the corresponding simulation time step length based on the equivalent delay to skip updating of the internal state machine of the functional module period by period within the simulation time step length. The simulation overhead is reduced, and the overall simulation speed is increased.

The present application relates to chip design technical field, especially to a waveform data acquisition method, electronic equipment and storage medium, it is through the target node of user specified capture each processing unit target data and compress storage to cache, in each device cycle target data in the cache is removed to memory;Wherein, the step of capturing the target data of the fth processing unit and compressing storage to cache includes: according to the target node, the data stream of the fth processing unit continuous output is filtered to obtain the data block including target node data;While the data block of cache changes, the change flag position of the data block of data change is valid, and the change flag position of the data block of no change is invalid.It not only allows the user to specify a large number of target nodes or change target nodes, without recompilation, improves the debugging efficiency;And reduce the occupied cache and memory space, improve the hardware simulation speed.

The present invention provides a subthreshold circuit post-simulation acceleration method and device, the method comprising: reading in a subthreshold circuit netlist containing wiring parasitic effects; wherein the simulation stimulus in the subthreshold circuit netlist includes an operating voltage; analyzing the signal flow in the simulation stimulus to determine a signal streamline network; simplifying the wiring parasitic effects of the signal streamline network; wherein the wiring parasitic effects are related to the operating voltage; performing circuit simulation on a circuit corresponding to the simplified subthreshold circuit netlist, thereby realizing post-simulation of the subthreshold circuit; that is, the operating voltage is used as a calculation factor for the wiring parasitic effects, so when simplifying the wiring parasitic effects, the wiring parasitic effects that can be simplified are accurately simplified, thereby reducing the matrix size of the subthreshold circuit and improving the speed and accuracy of the subthreshold circuit post-simulation.

The application relates to a load balancing-based sparse matrix LU decomposition method and device, which comprises the following steps: loading a sparse matrix A in circuit simulation and forming a basic update level; performing ALAP-based scheduling on the generated basic update level to generate an ALAP post-scheduling update level; performing numerical decomposition on the ALAP post-scheduling update level based on a Left-Looking algorithm from the lowest priority level, wherein all columns in the same level are calculated in parallel, and the columns in different levels are calculated according to the level priority; and switching to a Right-Looking algorithm for numerical decomposition when the size of the remaining level is one column after the Left-Looking algorithm-based decomposition. The application can improve the average utilization rate of hardware computing resources, reduce the LU decomposition time, shorten the sparse matrix solving time, and further accelerate the overall simulation speed.

A hierarchical parallel real-time simulation method for fast hybrid DC circuit breakers first constructs a small-step synthesis model of the submodules of the fast hybrid DCCB, and then builds a two-port equivalent model of the submodule based on the idea of ​​internal node contraction of the system, and then constructs a two-port equivalent model of the fast hybrid DCCB according to the connection relationship of the submodules. While ensuring accuracy, the small-step real-time simulation scale of the fast hybrid DCCB is greatly improved, and the simulation efficiency is improved.

The invention discloses an electromagnetic transient simulation matrix solving method based on an NUMA (Non Uniform Memory Access) architecture and Shuercomplement, which relates to the technical field of electromagnetic transient simulation, and comprises the following steps: S1, carrying out row and column rearrangement on a sparse dispersion nano matrix of electromagnetic transient simulation through permutation transformation, so that the sparse dispersion nano matrix is in a block diagonal edge adding form, a global solving problem is decoupled into a plurality of independent subdomain elimination problems and a low-latitude Schel complement matrix interface problem; and S2, establishing a mapping model of the computing sub-domain and the CPU physical architecture. According to the electromagnetic transient simulation matrix solving method based on the NUMA architecture and the Shuer complement, through an innovative matrix decomposition and hardware resource optimization strategy, the calculation efficiency of electromagnetic transient simulation is remarkably improved, the weak coupling characteristic of a power network is ingeniously utilized, and the calculation efficiency of the electromagnetic transient simulation is improved. A large-scale sparse matrix is decomposed into a plurality of independent low-dimensional sub-domain matrixes and a low-dimensional Schel complement interface matrix, and parallel processing of calculation tasks is achieved.

The invention discloses a lumped model-based rapid modeling method for a quantum well semiconductor optical amplifier. The method comprises the following steps of: S1, extracting parameter data; s2, constructing a lumped model; s3, performing numerical simulation calculation; s4, extracting design parameters; and S5, system-level simulation optimization is carried out. Compared with an existing space-time two-dimensional device model, the lumped model-based rapid modeling method for the quantum well semiconductor optical amplifier has the advantages that original two-dimensional space-time solution is simplified into one-dimensional time solution by integrating a space propagation equation and combining reasonable approximation, so that the calculation efficiency is improved in an order of magnitude manner, and the modeling precision is improved. The time domain simulation speed of the quantum well semiconductor optical amplifier can be obviously improved, and the calculation time consumption of device and system joint debugging in the parameter extraction and optimization design process is effectively shortened.