9 results about "Simulation software" patented technology

The invention discloses a design method of flyback switching power supply transformer shield windings. The design method comprises the steps of (1) selecting a transformer, determining a connection type of the transformer shield windings, and measuring a structural dimension of the transformer, (2) setting turns of the shield windings as fixed values, and obtaining structural capacitance between the windings of the transformer under the different turns of the shield windings by utilizing simulation software, (3) calculating a common mode current equivalence coefficient in the transformer underthe different turns of the shield windings, and drawing a function relation characteristic curve of the common mode current equivalence coefficient and the turns of the shield windings, and (4) obtaining the turns of the shield windings when the common mode current equivalence coefficient is minimum according to the drawn characteristic curve, namely the optimal turns of the shield windings for inhibiting common mode current of the transformer. Compared with the existing common mode inhibition technique, the method has the advantages of simple device manufacturing, low realization cost, overall device weight and volume reduction, obvious inhibition effect and the like.

The invention discloses a molecular dynamics-based nanoscale diamond friction wear process simulation method, and belongs to the field of tribology molecular dynamics method research. A potential function capable of reflecting nano-scale diamond characteristics is selected, and parameters of molecular dynamics simulation in system relaxation and molecular modeling software are set; and the influence of the temperature on the abrasion loss of the nanoscale diamond in the frictional abrasion process is calculated through molecular dynamics simulation software. A coordinate file simulated by a diamond model is calculated and output through lamps, visual software is imported for visual analysis, and internal information of the structure is obtained through section analysis. According to the invention, the microstructure change and the stress result of the nanoscale diamond in the frictional wear process can be simulated by adopting molecular dynamics, and the process of structural damage can be visually observed.

The invention discloses an LDW function detection method. The method comprises the steps of establishing the static environment data, a main vehicle model, the dynamic environment data, a main vehiclemotion track and the sensor data; establishing a plurality of test scenes according to the static environment data, the main vehicle model, the dynamic environment data, the main vehicle motion trackand the sensor data; carrying out the LDW function detection in any test scene, wherein the LDW function detection comprises the following steps of downloading an actual road route on an open sourcemap, and importing the actual road route into simulation software; in the simulation software, changing an actual road route into three lanes in two directions; intercepting environment information from a preset recorded road video; and importing the to-be-detected vehicle model, and carrying out LDW function detection. According to the LDW function detection method provided by the invention, theextreme working conditions, severe weather and other working conditions which are not easy to meet in practice can be simulated, and the dangerous driving is avoided. Similarly, problems can be foundin advance in the initial development stage, and the research and development period is shortened.

The invention relates to a dynamic torque control method capable of tracking optimal modal gain based on air density. The method specifically comprises the following steps that S1, a main control system obtains a real-time wind speed, whether the real-time wind speed is greater than a preset rated wind speed or not is judged, the step S4 is executed if the real-time wind speed is greater than thepreset rated wind speed, and otherwise, the step S2 is executed; S2, a torque control module obtains an air density value and an angular speed of blade rotation, calculates to obtain an optimal torquecontrol coefficient, and sends the optimal torque control coefficient to the main control system; S3, the main control system adjusts the blade tip speed ratio of a wind wheel according to the optimal blade tip speed ratio corresponding to the optimal torque control coefficient, and maximum capture of wind energy is achieved; and S4, a pitch angle control module constructs a pitch angle algorithmmodel according to simulation software, adjusts corresponding parameters to calculate to obtain an optimal pitch angle parameter and sends the optimal pitch angle parameter to a variable pitch system, the variable pitch system adjusts a pitch angle, and a constant rotating speed is maintained to realize maximum capture of wind energy. Compared with the prior art, the method has the advantages ofachieving maximum capture of wind energy, effectively improving the wind energy utilization efficiency of a wind turbine generator and the like.

The invention provides a house heating terminal capacity determination method based on Q-t curves. The method comprises the following steps: the unit area hourly heating load in the whole heating season is calculated by using unstable building simulation software according to a house target building, envelop enclosure thermal parameters, outdoor climatic parameters, an inner disturbance mold and a zero-dimension heating time length t; an unguaranteed hour number is calculated according to 5 unguaranteed days of the mean daily temperature in the heating season to determine a design day and a heating designed load Q; when preheating is not performed, a Q-t graph is directly drawn out; when preheating is performed, different preheating times and preheating temperatures are input in the unstable building simulation software again, the corresponding heating designed load Q with preheating is obtained according to the determined design day, and the Q-t curves with preheating are drawn to build a Q-t curve cluster; and a designer can respectively determine the terminal capacities with or without preheating according to the Q-t curve cluster and the user demands. The method effectively overcomes main limitation in traditional house heating terminal capacity selection, and can realize reasonable selection of compartmenting and time-sharing heating terminal capacities to prevent the problem of higher or lower equipment capacity.

The invention discloses a GIS equipment temperature field reduced-order rapid simulation method and device, and the method comprises the following steps: S1, building a three-dimensional geometric simulation model of an inspection object according to the physical structure of the inspection object, performing multi-group working condition simulation on the established three-dimensional simulation model by utilizing finite element simulation software to obtain multi-group three-dimensional temperature field simulation analysis results; s2, according to the established three-dimensional geometric simulation model and the temperature field three-dimensional simulation result, extracting the temperature field three-dimensional simulation result as a temperature field one-dimensional data set through feature point extraction and temperature information data association on feature points; and S3, different input conditions are changed, simulation is carried out through the step S1, a training sample library is constructed according to the corresponding input one-dimensional data set and the corresponding temperature field one-dimensional data set obtained through extraction in the step S2, a training model is constructed, learning is carried out through machine learning software by utilizing samples of the training sample library, and a reduced-order model is generated.