78results about How to "Guaranteed analytical accuracy" patented technology

The invention provides a method for accurately reconstructing a microcosmic finite element grid model of a dissimilar material on the basis of CT (computed tomography) images. According to the method, sequence CT images are acquired through industrial CT, and micro-structural information in the CT images is mapped onto the reconstructed finite element grid model on basis of digitization and threshold segmentation, so that any detailed structural information in the dissimilar material can be represented in the reconstructed model. The method improves the reconstruction accuracy by means of contrast-limited adaptive histogram equalization, median filtering and pixel interpolation, and improves the reconstruction efficiency through image cut and pixel combination. With the method, rectangular (two-dimensional) and cuboid (three-dimensional) unit grid models with higher finite element analysis accuracy are directly reconstructed, error accumulation during reconstruction, grid partition and other links of the existing geometric reconstruction method is avoided, and reconstruction accuracy and efficiency are improved. The method can be widely applied to fields such as performance prediction and optimization design of dissimilar materials.

The invention relates to a disease risk predication method and system. The method comprises the following steps of: S1, receiving input gene sequencing result information; analyzing the input gene sequencing result information to obtain all mutant gene information; S2, looking up disease gene mutant information of corresponding gene sites from a precision medical knowledge base according to the gene sites corresponding to the mutant gene information, so as to obtain at least one piece of disease gene mutant information; S3, matching each piece of the disease gene mutant information with all the disease gene mutant information to obtain the similarity of each piece of the mutant gene information, and all the disease gene mutant information; and S4, obtaining a risk predication table aiming at the gene sequencing result information according to the similarity of each piece of the mutant gene information, and all the disease gene mutant information. By analyzing an association relation of susceptibility genes, mutation sites, mutation types and diseases, disease risk predication is carried out on healthy people and general disease risk grade predication is provided; disease risks in the future are reduced.

The invention discloses a device for measuring a heat exchange coefficient of an interface between a high-temperature steel plate and a die in a hot stamp process. The device comprises a pressure applying device and a measurement device, wherein the pressure applying device comprises a pressurization device, an upper workbench and a lower workbench, wherein the pressurization device is connected with the upper workbench and the lower workbench respectively; the measurement device comprises an upper fixture, a lower fixture and a test sample fixing fixture; the upper fixture is fixed on the upper workbench; the lower fixture is fixed on the lower workbench; and the test sample fixing fixture is arranged between the upper fixture and the lower fixture. The invention also discloses a method for measuring the heat exchange coefficient of the interface between the high-temperature steel plate and the die in the hot stamp process. By the device and the method, the limitation to samples with the thickness being more than 30mm in the prior art is avoided; the heat exchange coefficient of the interface between the steel plate and the die in the hot stamp process can be measured; and by an elastic energy storage element, stabilization of interface pressures between a boron steel test sample and an upper die and between the boron steel test sample and a lower die can be guaranteed.

The invention relates to a magnetic-structural-coupling-field-based transformer winding deformation analysis method. According to the technical scheme, the method comprises the following steps: a transformer magnetic-structural coupling model containing an electromagnetic field model and a structural field model is established and attributes and constraint conditions of the electromagnetic field model and the structural field model are set; a current is loaded on the electromagnetic field model to obtain an analysis result of an electromagnetic field Lorentz force; the analysis result of the electromagnetic field Lorentz force is extracted and is loaded on the structural model as an electromagnetic field load, and deformation of the transformer winding and the stress strength are observed, thereby realizing the analysis of the transformer deformation. According to the invention, a magnetic-structural-coupling finite element analysis method is applied to the transformer winding deformation analysis and thus the analysis on the transformer winding deformation state is realized under the circumstances that no power failure occurs and no cover suspending needs to be carried out, so that work of field testing and cover suspension examination and the like can be avoided. On the premise that the analysis accuracy is guaranteed, the work load is reduced and the operation and maintenance costs are saved.

The invention discloses an automatic moisture tester. The automatic moisture tester comprises a moisture test module for performing a moisture test to materials and a crucible for containing the materials; the moisture test module comprises a material transfer device for transferring the materials to the moisture test module; a manipulator device for completing conveying of the materials, transferred by the material transfer device, between all devices of the moisture test module; a weighing device for weighing the materials conveyed by the manipulator device; a drying box device for drying the materials weighed by the weighing device; the materials are transferred to the moisture test module through the material transfer device, and the manipulator device conveys the materials on the material transfer device to the weighing device for weighing, then conveys the materials to the drying box device for drying and then conveys the materials to the weighing device for weighing to complete a test. The automatic moisture tester has the advantages of high automation level, high equipment integration level, high working efficiency and high test accuracy.

The invention discloses a mechanism time-variation reliability analysis method, which is applied to the field of mechanism time-variation reliability. For the problem that actual engineering reliability cannot be described completely and accurately in the prior art, effective diffusion points on upper and lower boundaries are solved through an envelope equation; uncertainty random information of non-normal distribution is adopted as a random variable input; kinematic error sample points corresponding to the diffusion points under the uncertainty random variable input are obtained; correlationof the kinematic error sample points corresponding to the diffusion points is described through a copula function; and multidimensional joint probability density functions corresponding to the diffusion points are built through a characteristic of multidimensional distribution function decomposition of a vine-copula function, so that a definite integral is solved for obtaining the time-variation reliability. Therefore, a conventional normal distribution hypothesis is popularized as the non-normal distribution; and the method has relatively high practical values and relatively strong engineering significance.

The invention discloses an image processing method and device utilizing big data, a storage medium and computer equipment. The invention relates to the technical field of information, and mainly aimsto realize remote pathological diagnosis without needing a specially-assigned person to maintain, call and store a pathological tissue specimen, so that the labor cost consumed by pathological diagnosis can be saved, mutual interference can be avoided, and the analysis accuracy of the pathological tissue specimen is prevented from being influenced. The method comprises the steps: collecting different pathological tissue specimen images corresponding to different patients, and obtaining identification information of the different patients; establishing a corresponding relationship between the identification information of different patients and the images of different pathological tissue specimens, and storing the corresponding relationship in a preset image database; when an image query request sent by a client is received, searching the pathological tissue specimen image of the target patient from a preset image database according to the identification information of the target patient carried by the image query request, and feeding back the pathological tissue specimen image of the target patient to the client. The method is suitable for image processing.

The invention belongs to the field of electromagnetic compatibility, and mainly solves a problem of crosstalk analysis of a non-uniform transmission line network. Combining with the advantages of a BLT equation and an FDTD method, the invention proposes a BLT-FDTD mixed method. The method can carry out the analysis of a cable network comprising a non-uniform transmission line, enables the calculation efficiency to be maximized under the condition that the analysis precision is guaranteed, and can meet the analysis demand of a cable network of an actual complex system. The method is high in practical value, can be applied to the electromagnetic compatibility analysis at different levels, and is good in application prospect in the fields of electromagnetic interference suppression, electromagnetic compatibility analysis and evaluation and electromagnetic protection.

The invention discloses a finite element modeling method for a binding type generator stator end. The method comprises the steps of, on the basis of a three-dimensional model of the stator end, performing middle line extraction and/or middle surface extraction processing on stator end parts of the three-dimensional model; performing gridding processing on the stator end parts to build corresponding grid models; and connecting the grid models of the parts to build a whole stator end finite element model. For the problems that the finite element model in a process of performing dynamics analysison a binding type fixed structure of the generator stator end by adopting a numerical method is difficult to build reasonably and the modeling efficiency is relatively low, on the basis of a principle that beam and shell units is same in degree of freedom, a line rod beam unit finite element model and a bracket and pressing plate shell unit finite element model are built by using middle line extraction or middle surface extraction, and a connection mode of node sharing is adopted, so that the use of contact units is reduced, the modeling efficiency is effectively improved while the modeling difficulty is lowered and the analysis precision is guaranteed, the calculation scale is reduced, and the implementation is easy.

The invention discloses a welding machine control system. The welding machine control system comprises a welding current control module used for controlling the welding current, an arc voltage controlmodule used for controlling the arc voltage, a welding speed control module used for controlling the welding speed, a welding angle control module used for controlling the welding angle, a protectiongas flow control module used for controlling the protection gas flow, a database module used for storing table data of the weld joint state and a welding parameter adjusting method, a weld joint image shooting module used for shooting a welding joint image, and a weld joint image analysis module used for analyzing the shot weld joint image. According to the welding machine control system, the defects in the prior art can be overcome, and the control accuracy of a welding machine in a complex working condition is improved.

The invention provides an electricity price probability prediction method and system, computer equipment and a storage medium, and the method comprises the steps: employing a prediction model for prediction according to electricity price data in a training period, and obtaining first electricity price prediction data; according to the first electricity price prediction data, performing fitting byadopting a distribution model to obtain error characteristics of the first electricity price prediction data; performing clustering analysis on the error features of the first electricity price prediction data by adopting a clustering algorithm to obtain center features of the first electricity price prediction data; according to the electricity price data of the target time period, adopting a prediction model to predict and obtain second electricity price prediction data; and correcting the second electricity price prediction data according to the center features of the first electricity price prediction data to obtain electricity price probability prediction data of the target time period. According to the embodiment of the invention, the scientific and accurate electricity price prediction and the analysis precision of the error probability are ensured, the feasibility of the prediction result for risk analysis is also considered, and the method and system are of great significanceto pricing decision and risk assessment of power generators.

The invention discloses a finite element analysis simplified method of a turnover protection structure. The method includes the steps that non-linear elastic shafts in the direction x, the direction yand the direction z are connected, and complex materials and contact attribute definitions of an elastic vibration absorber of the turnover protection structure are replaced; a combination method ofbeam connection and bolt connection sub-model analysis is used for evaluating the bolt connection strength in the turnover protection structure; the turnover protection structure is optimized according to a corresponding standard to analyze a load combination sequence. The mechanical influence of the elastic vibration absorber on the turnover protection structure is considered, the complex constitutive relation definition and the complex contact behavior definition of the elastic vibration absorber are avoided, and the convergence analysis difficulty is reduced on the basis of guaranteeing theanalysis precision. Bolt connection analysis is rapid and accurate. A complex turnover protection structure analysis problem is converted into an analysis combination from simple to complicated, andanalysis resources are saved. Operating steps are simple, and high universality is achieved.

The invention discloses an analysis method for flood control scheduling risk transfer rules of reservoir groups which comprises the steps of determining a risk element of each reservoir and an uncertainty sequence of each risk element, and obtaining a flood control highest water level sequence corresponding to each uncertainty sequence based on a flood control scheduling model; calculating the information entropy of each uncertainty sequence and the risk entropy of each flood regulation highest water level sequence by adopting an information entropy theory; and based on the information entropyand the risk entropy corresponding to the to-be-analyzed risk element of each reservoir and/or the upstream reservoir thereof, constructing a risk model of the reservoir and analyzing a risk transferrule of each risk element on each reservoir based on the information entropy and the risk entropy corresponding to the risk element of each reservoir and/or the upstream reservoir. By constructing the risk model of the reservoir, the direct or indirect transfer influence of the risk elements on flood control scheduling can be effectively reflected, so that the transfer rule of the risk elements in the flood control scheduling system is analyzed, a basis is provided for flood control risk management, and a reference is provided for making a flood control scheduling scheme.

The invention relates to a risk control method based on gesture monitoring on a mobile terminal and a related device, and belongs to the technical field of risk monitoring, and the method comprises the steps: monitoring and continuously collecting interface operation feature data generated in a man-machine interaction process; obtaining interface operation characteristic data in a preset time period; dividing the interface operation characteristic data into multiple sections of sub-interface operation characteristic data; adding a corresponding terminal service label in a human-computer interaction process to each sub-interface operation characteristic data, and inputting the terminal service label into the risk control model to obtain a sub-gesture label and an abnormal score of each sub-interface operation characteristic data; and calculating a risk control score corresponding to the user according to the sub-gesture label of each sub-interface operation feature data, the abnormal score of the sub-gesture label and the terminal service label corresponding to each sub-interface operation feature data, so as to determine whether there is a risk or not. The reliability of risk control on the mobile terminal is effectively improved. The invention also relates to a blockchain technology. The sub-interface operation feature data is stored in the blockchain.

The embodiment of the invention provides a data monitoring method and device based on power equipment, and relates to the technical field of data security, and the method comprises the steps: obtaining monitoring data of the power equipment, carrying out analysis of the monitoring data, and obtaining an analysis result; judging whether the analysis result is abnormal or not; when the analysis result is not abnormal, identifying the data type of the monitoring data; judging whether the monitoring data is abnormal or not according to the data type; and when the monitoring data is not abnormal, outputting the monitoring data. Visibly, by implementing the implementation mode, the data of various devices can be monitored in real time, and the use safety of the devices is guaranteed.

The invention provides a grid division method and device based on a grid convergence factor. The method comprises the following steps: creating a three-dimensional model of an analyzed object; defining simulation analysis parameters and grid setting basic parameters of the analyzed object; enabling the simulation process template to perform simulation operation according to the grid setting basicparameters and the simulation analysis parameters to obtain a grid convergence factor simulation value; judging whether the grid convergence factor simulation value is smaller than a grid convergencefactor threshold value or not, if not, reducing the value of the grid basic size by r times, and then returning back; and if so, curing the finally determined value of the basic size of the grid meeting the requirement in the simulation process template. Compared with the prior art, the method has the advantages that (1) the optimal grid size is obtained based on the grid convergence factor, and the analysis precision is guaranteed while the solving efficiency is guaranteed; (2) a simulation process template is formulated, and the grid division efficiency and reusability are improved.

The invention provides an analyzing method of dynamic failure loads of a rivet connecting area. The analyzing method comprises the following steps: by designing a dog bone sample, a stress-strain curve of a metal material under quasi static and dynamic loads is measured and converted into an effective stress-strain curve; a Johnson-Cook constitutive model comprehensively considering the strain strengthening effect, the strain rate effect and the temperature effect is given; a detailed finite element model of the rivet connecting area is built to obtain the connecting piece dynamic pull-out failure load of the rivet connecting area f<P_t> dot (varepsilon) and the extrusion failure load f<P_br>dot(varepsilon); the dynamic limit failure stress of a rivet material is given, and the dynamic limit tensile load f<S_t>dot(varepsilon) and the dynamic limit shearing load f<S_s>dot(varepsilon) of a rivet are obtained; and through f<P_t>bullet(varepsilon), f<P_br>bullet(varepsilon), f<S_t>bullet(varepsilon), f<S_s>bullet(varepsilon) and the rivet reduction coefficient K1, the dynamic tensile invalid load and the dynamic shearing invalid load of the rivet connecting area are obtained finally. According to the analyzing method, the research and development time can be shortened greatly, the research and development cost can be greatly reduced, the analyzing precision and reliability degree are ensured, and the analyzing method has wide practical engineering application prospects.