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75results about How to "Reduce trial and error costs" patented technology

Design method of electromagnetic interference filter capable of suppressing resonance

The invention discloses a design method of an electromagnetic interference filter capable of suppressing the resonance. The method comprises the steps of obtaining difference/common mode interferencevoltage and interference source internal resistance of the inverter through an inverter interference source model; calculating to obtain insertion loss required by a system, then selecting a filter topology, extracting element parameters of a differential/common mode filter by adopting an optimization algorithm, and simulating to obtain an optimal filter element value under the condition of considering high-frequency equivalent parasitic parameters of a filter device. According to the invention, filter manufacturing and experimental verification are carried out according to element parameter values obtained by simulation; analysis of filtering effect, high-frequency equivalent model combined with filter, finding out a filter self-resonance frequency point; the problem that common-mode EMIof part of frequency points exceeds the standard is solved by adding damping resistors, the trial and error cost in the filter design process is reduced, quantitative design of the EMI filter is achieved, key parts causing EMI exceeding the standard are accurately positioned by analyzing a system high-frequency equivalent model, and the optimal design of the filter is achieved.
Owner:ZHEJIANG UNIV

Global member management application system, global member management system and method thereof

InactiveCN111681039ARealize operationMeet the needs of sustainable operationDiscounts/incentivesBuying/selling/leasing transactionsBusiness enterpriseUser management
The invention relates to the field of member operation and marketing, in particular to a global member management application system, a global member management system and a global member management method. The application system comprises a member management module, a potential user management module and a member distribution management module. The potential customer management module acquires potential customer data through multiple channels, analyzes the potential customer data, and coverts potential customers into members; the member management module is used for integrating and managing member data of existing members and members converted by the potential customer management module, and sending the data integration result to the member distribution management module; and the member distribution management module acquires member data of members capable of performing distribution operation according to the data integration result, and manages and maintains basic information data, distribution data and distribution user relationships of the members, thereby realizing universal member operation. According to the invention, clients in multiple channels can be effectively managed,consumption information of the clients can be accurately and completely recognized, and the sustainable operation capability of enterprises for the clients is improved.
Owner:广东云徙智能科技有限公司

Laboratory simulation device and method for producing calcium silicate board through flow slurry method and Hatschek method

ActiveCN108481542AReduce trial and error costsTo achieve the purpose of blending into pulpCeramic shaping plantsMaterials scienceFiltration
The invention provides a laboratory simulation device and method for producing a calcium silicate board through a flow slurry method and a Hatschek method. The device comprises metering devices, a stirring device, a static curing device, an autoclaved curing device and a drying device, and the device further comprises a suction filtration device used for conducting suction filtration and dehydration on stirred and mixed calcium silicate board slurry to form small material layers, a blank moving device used for moving the small material layers into a molding mold and a pressure molding device used for conducting pressurizing molding on the multiple stacked small material layers. The device can completely and truly simulate the process of preparing the calcium silicate board through the flowslurry method and the Hatschek method, and can assist in analyzing the generating reasons of all defects of the board in practical production and exploring solving methods; and the molding method comprising the steps of multiple times of vacuum suction filtration and dehydration, stacking and pressurizing can truthfully reflect the small material layer vacuum water filtering and small material layer stacking and pressurizing molding process of a linear board making machine in the industrial production board making process, and can assist in analyzing the board delamination reasons in actual production and exploring solving methods.
Owner:WUHAN BUILDING MATERIAL IND DESIGN & RES INST

Information processing method and apparatus

The invention provides an information processing method and apparatus. The method comprises the steps of collecting first feature information of an object entering a direct broadcasting room; according to the first feature information of the object, obtaining a first probability of generating a target event in a first popularization platform by the object, and a second probability of retaining theobject in the first popularization platform; based on the first probability and the second probability, determining a first numerical value of the object; and according to the first numerical value,determining discount information corresponding to operation of generating the target event in the first popularization platform by the object. Therefore, personalized discount information is given todifferent objects; the pertinence is strong; and the trial-and-error cost of the object in the first popularization platform is reduced. Moreover, the first popularization platform is displayed to theobject through the direct broadcasting room, so that the understanding of the object to the first popularization platform can be improved and the trial-and-error cost of the object in the first popularization platform can be further reduced. Therefore, the problems of poor personalization and high trial-and-error cost of a mode for giving the same discount to users in related technologies are solved.
Owner:BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD

Method and system for determining filtering factor of hydro-thermal power frequency division control AGC system

The invention discloses a method and a system for determining a filtering factor of a hydro-thermal power frequency division control AGC system, and the method comprises the steps: setting a power grid to be in a non-frequency division adjustment mode, determining a thermal power generating unit frequency modulation filtering factor alternative value according to a steady-state frequency modulation result, and determining a hydro-thermal power generating unit frequency modulation filtering factor alternative value according to a disturbance frequency modulation result; setting the power grid to be in a frequency-division adjusting mode; setting a filtering factor of the AGC system according to the current alternative value of the thermal power generating unit frequency modulation filteringfactor and the alternative value of the hydroelectric generating unit frequency modulation filtering factor; and performing a simulation test to obtain a secondary frequency modulation result of theAGC system to the power grid in the frequency division regulation mode, and determining the optimal value of the filter factor of the hydro-thermal power frequency division control AGC system according to the secondary frequency modulation result. According to the method, the filtering factor of the AGC system is accurately and efficiently determined through a simulation means, the dependence of parameter configuration on previous operation experience of a previous power grid is reduced, an optimal solution can be quickly given, the optimal frequency modulation performance of the frequency modulation unit is fully exerted, and the trial and error cost during trial operation is reduced.
Owner:CHINA ELECTRIC POWER RES INST +3

Integral lifting construction method for aluminum panel curtain wall of super-large double-curvature integrated unit

ActiveCN110374236AIncrease successThe overall upgrade of the large hyperbolic integrated unit aluminum curtain wall was successfulWallsArchitectural engineeringMechanical engineering
The invention discloses an integral lifting construction method for an aluminum panel curtain wall of a super-large double-curvature integrated unit. The integral lifting construction method for the aluminum panel curtain wall of the super-large double-curvature integrated unit is suitable for the integral lifting construction of the aluminum panel curtain wall of the super-large integrated unit and particularly suitable for the integral lifting construction of the aluminum panel curtain wall of the super-large integrated unit with double curved surfaces. The method mainly comprises the following construction characteristics of a construction technology for an integral assembly scaffold platform of the super-large integrated unit, an integral BIM analog analysis technology of the super-large integrated unit and an integral lifting technology of the super-large integrated unit. The construction method in the scheme is suitable for the construction of the super-high and super-span aluminum panel curtain wall. By adopting the integral lifting type suspending technology, the method not only can effectively ensure construction safety and construction period, but also can save construction cost.
Owner:CHINA CONSTR THIRD ENG BUREAU GRP CO LTD

Information searching method and device, computer equipment and storage medium

The invention provides an information search method and device, computer equipment and a storage medium, and the method comprises the steps: receiving initial query information input in a search box, wherein the initial query information comprises any one of characters, keywords and keywords; and displaying association query information and a live broadcast identifier corresponding to the initial query information at a preset position except the search box, wherein the live broadcast identifier is used for indicating that the multimedia content corresponding to the associative query information is in a live broadcast state. According to the method and the device, the condition that trying to search the query information is initiated under the condition that whether the corresponding live broadcast content exists or not is not determined is avoided, the trial and error cost of searching the live broadcast content is reduced, the live broadcast content query efficiency is improved, in addition, the interested association query information with the live broadcast identifier can be directly selected in the search page, the corresponding live broadcast content is triggered to be opened, and thus the efficiency of obtaining the live broadcast content which the user wants to watch is improved.
Owner:BEIJING BYTEDANCE NETWORK TECH CO LTD

Module machine type selection method and device, computer equipment and storage medium

The invention relates to a module machine type selection method and device, computer equipment and a storage medium. The method comprises the steps: responding to a model selection instruction, and displaying a model selection operation interface; obtaining target working condition parameters and actual operation data input in the model selection operation interface; determining a corresponding standard module machine type according to the target working condition parameters; according to the target working condition parameters and the actual operation data, controlling the model of the standard module machine to perform simulation operation, and generating corresponding performance parameters; displaying the model of the standard module machine and the corresponding performance parameters on a display panel; and obtaining the model of a target module machine selected from the standard module machine types, and displaying the model of the target module machine. By adopting the method, a user or a worker does not need to directly perform model selection according to personal experience, model selection failure caused by insufficient personal experience or errors can be avoided, the trial and error cost is reduced, and the model selection accuracy of module machine model selection is improved.
Owner:GREE ELECTRIC APPLIANCES INC

Method and system for managing resumes of students going to bloom based on blockchain smart contract

The invention discloses a method and a system for managing resumes of students going to bloom based on a blockchain smart contract, and belongs to the technical field of blockchains, the system comprises a bottom blockchain module and an upper application system module; the upper application system module comprises a school unit, a functional department unit and an enterprise unit; the school is responsible for inputting and modeling the information of the blooming students, and the blockchain automatically maintains and manages the information of the blooming students according to the agreedrules of the smart contract; the functional department and the enterprise inquire the information of the lesser students according to the passport numbers by utilizing an inquiry terminal of the application system, the blockchain automatically retrieves the information of the lesser students corresponding to the passport numbers on the chain according to the agreed rules of the intelligent contract, and the information is sorted into a model format and returned to the functional department and the enterprise if verification succeeds; refusing feedback if verification fails. The blockchain is used for storing the information of the students who are going to leave, tampering cannot happen, the credibility of data is improved, meanwhile, the intelligent contract is used for managing information modeling, and data query and application are facilitated.
Owner:南京科绽信息技术有限公司

Plain weave fabric extensibility presetting method and plain weave fabric manufacturing method for setting extensibility

The invention discloses an extensibility presetting method of plain weave fabric. The method comprises the following steps: prefetching the warp radius and weft radius of to-be-manufactured fabric; wherein the number of the warp yarns in the weft unit length and the number of the weft yarns in the warp unit length are equal; wherein the warp-wise length and the weft-wise length are the warp-wise breaking strength of the to-be-manufactured fabric; setting a stress coefficient of the warp yarns; and calculating the elongation of the plain weave fabric according to the equation set. The inventiondiscloses a plain weave fabric manufacturing method with set elongation. The method comprises the following steps: selecting warp yarns and weft yarns for manufacturing plain weave fabric, the methodcomprises the following steps: acquiring warp radius, weft radius, elastic coefficient of warp and breaking strength of warp, calculating according to an equation set to obtain multiple groups of alternative solutions, trial-manufacturing the fabric according to the alternative solutions, measuring the elongation of the fabric, and manufacturing the plain weave fabric according to related physical quantity parameters when the elongation error range required to be manufactured is met. Material selection and structural design of plain weave fabric can be guided according to the required fabricelongation, and a large amount of trial and error cost is avoided.
Owner:HENAN INST OF ENG

Foreign exchange rate prediction method based on combination of neural network model and classification model

PendingCN111311418APrediction is accurate and stableEasy to carry outFinanceBiological neural network modelsAlgorithmNetwork model
The invention discloses a foreign exchange rate prediction method based on combination of a neural network model and a classification model, and relates to the technical field of data processing methods of foreign exchange rate prediction systems. The technical defects that a foreign exchange rate prediction scheme is large in uncertainty and high in trial and error cost, and the model dissimilarity is not fully utilized are overcome. For the regression model, performing data preprocessing on the foreign exchange historical data in the N periods, and inputting the data into a neural network model; adding a delay layer into the neural network model, and performing iterative prediction to obtain an optimal prediction result; for the classification model, collecting foreign exchange historical data in the same period as the regression model, and dividing a confidence interval by taking price data predicted by the regression model; predicting a price data rising and falling probability value according to the classification model, and adjusting the size of a confidence interval; therefore, a suitable foreign exchange rate prediction result for price reference of entrance and exit is obtained. The influence of uncertainty is reduced, and the reliability of a prediction result is improved.
Owner:深圳索信达数据技术有限公司

Segmental prefabrication method of box girder with short-line method based on bim

The invention discloses a BIM-based short-line method box girder section prefabrication method, 1, using the Bentley modeling platform to build a BIM design model of the box girder as a whole and a box girder section; 2, building the completed BIM design model for The layout of the prefabrication plant is simulated by the BIM model; 3. The prefabricated steel cage of the box girder segment by the short-line method; 4. When the box girder segment is prefabricated by the short-line method, one of the end forms is fixed, and the bottom form is read by reading the initial box girder The segmental BIM design model is adjusted and fixed with the bottom form trolley; 5. During the prefabrication process of the box girder segment, the spraying maintenance equipment is dynamically controlled and adjusted through the control system; 6. Before the concrete of the cast-in-place box girder segment is solidified , install control points for plane precision control and standard high precision control; 7, use the prefabricated last box girder segment as a floating end form, and obtain the linear compensation value of this box girder segment; 8, repeat step 3‑ 7. Complete the prefabrication of all box girder segments. The invention guarantees the safety, reliability and economy of the project.
Owner:HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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