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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 14. Отображено 14.
25-07-2023 дата публикации

Camptothecin derivative as well as preparation method and application thereof

Номер: CN116478174A
Принадлежит:

The present invention provides a novel camptothecin derivative compound, a pharmaceutically acceptable salt, a stereoisomer or a prodrug thereof, and a preparation method and use thereof, the compound has a structure represented by a formula (I), and has good anticancer activity.

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14-07-2023 дата публикации

2.4 GPa aluminum-containing high-cobalt-nickel secondary hardening steel with complex phase precipitation and preparation method of 2.4 GPa aluminum-containing high-cobalt-nickel secondary hardening steel

Номер: CN116426846A
Принадлежит:

The invention provides 2.4 GPa aluminum-containing high-cobalt-nickel secondary hardening steel with complex phase precipitation and a preparation method thereof, and belongs to the technical field of alloy steel. According to the secondary hardening type ultra-high-strength steel based on the excellent performance, on the basis of current high-cobalt-nickel secondary hardening steel M54 alloy components, 1% of Al element is added to introduce a nanoscale NiAl phase capable of achieving a remarkable precipitation strengthening effect, complex phase precipitation with M2C carbide is achieved, high yield strength and tensile strength are achieved in a composite precipitation strengthening mode, and the performance of the high-cobalt-nickel secondary hardening type ultra-high-strength steel is improved. According to the preparation method, a tempering heat treatment window is widened, primary tempering can be randomly selected within the temperature range, peak aging of two precipitated phases ...

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15-10-2014 дата публикации

Artificial intelligence-based method for establishing real time part level model of turbo shaft engine

Номер: CN104102769A
Принадлежит:

The invention discloses an artificial intelligence-based method for establishing a real time part level model of a turbo shaft engine. A method for solving a co-working equation of the turbo shaft engine is solved by adopting intelligent mapping. The method comprises the steps of taking a part co-working balance equation initial residual as an intelligent mapping network input and a balance equation guess value correction as a network output, training an extreme learning machine (ELM), and adopting an ADE (adaptive difference evolution) algorithm to optimize parameters of the extreme learning machine, thus improving the network mapping degree. An adaptive zoom factor is adopted in the ADE algorithm, and the optimizing capacity of a DE algorithm is improved. Results show that the maximal model error of the artificial intelligence-based method for establishing the real time part level model of the turbo shaft engine is one third of that of a one-shot algorithm, and the model operation time ...

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21-07-2023 дата публикации

Creep-resistant stainless steel design method of physical metallurgy principle guidance diagram neural network

Номер: CN116469496A
Принадлежит:

The invention provides a creep-resistant stainless steel design method of a physical metallurgy principle guidance diagram neural network, and relates to the technical field of steel and iron material design and machine learning application. The method comprises the following steps: firstly, collecting creep data, establishing a creep data set, and randomly dividing the data into a training set and a test set for 50 times; establishing a graph neural network model GNN-PM based on physical metallurgical principle guidance according to the training set; taking the GNN-PM model of which the correlation coefficient is greater than 90% as an objective function in a genetic algorithm; the stainless steel with optimized chemical components, processing technology and optimal creep resistance is obtained; and finally, an SVC classifier is adopted to classify and screen the obtained design results, and the chemical components, the processing technology and the creep life of the typical alloy are ...

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23-06-2023 дата публикации

Automatic sorting device for online quality detection of polyphenylene sulfide short fiber finished products

Номер: CN116273981A
Принадлежит:

The invention discloses an automatic sorting device for polyphenylene sulfide short fiber finished product quality on-line detection, which comprises a detection unit, a separation unit and a conveying unit, a first detector of the detection unit is located between a feed port and a cut-off machine of the conveying unit, the cut-off machine is communicated with a second detector through a first blanking pipe, and the second detector is communicated with a second blanking pipe. The second detector is communicated with one side of a first reversing valve of the separating unit through a second discharging pipe, the other two sides of the first reversing valve are communicated with one side of a second reversing valve and a first packing box respectively, and the other two sides of the second reversing valve are communicated with one side of a third reversing valve and a second packing box respectively. The other two sides of the third reversing valve communicate with the third packing box ...

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16-05-2023 дата публикации

Lane departure state estimation method and device and storage medium

Номер: CN116118726A
Принадлежит:

The invention discloses a lane departure state estimation method, a lane departure state estimation device and a storage medium, which are used for reducing the false alarm rate. The lane departure state estimation method disclosed by the invention comprises the following steps: determining a virtual lane line position; predicting a future trajectory of the vehicle; calculating double-cross-lane time, and smoothing the double-cross-lane time; and determining the current departure state of the vehicle according to the virtual lane line position, the future trajectory of the vehicle and the double-cross-lane time. The invention further provides a lane departure state estimation device and a storage medium.

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18-07-2023 дата публикации

Cloud driver abnormal state detection and alarm system and method

Номер: CN116443026A
Принадлежит:

The invention relates to a cloud driver abnormal state detection and alarm system and method, belongs to the technical field of safe driving, and solves the problems of difficulty in model training, limited recognition scenes, different recognition effects from person to person, high requirement on vehicle-mounted hardware computing power and low resource utilization rate of a cloud computing platform and big data in the prior art. A single vehicle state information acquisition and analysis subsystem is utilized to perform acquisition and analysis processing on each vehicle to obtain driver comprehensive feature information and vehicle driving state information, and the driver comprehensive feature information and the vehicle driving state information are uploaded to a cloud driver information anomaly detection subsystem; based on the vehicle driving state information, the driver comprehensive feature information of each vehicle is divided according to feature driving categories and processed ...

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01-08-2023 дата публикации

Preparation method of boron nitride modified polyphenylene sulfide fiber and product thereof

Номер: CN116516515A
Принадлежит:

The invention discloses a boron nitride modified polyphenylene sulfide fiber preparation method and a product thereof, and belongs to the technical field of special fiber manufacturing. The preparation method comprises the following steps: firstly modifying boron nitride powder by using a silane coupling agent, then mixing the modified boron nitride with polyphenylene sulfide resin to obtain modified resin, then carrying out melt spinning, and carrying out heat setting, slow cooling zone and cooling air curing to obtain molded fibers; the formed fibers are oiled and then wound, then two-stage drafting and shaping are carried out, then the fibers enter a crimping machine through a steam preheating box, then the fibers are subjected to relaxation heat shaping, and a finished product is obtained after cooling. The fiber-grade polyphenylene sulfide resin and the boron nitride are used as raw materials, the modified polyphenylene sulfide fiber is obtained through a melting-stretching process ...

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08-08-2023 дата публикации

Method for simply and conveniently preparing high-temperature-resistant antioxidant polyphenylene sulfide fiber and product of high-temperature-resistant antioxidant polyphenylene sulfide fiber

Номер: CN116556046A
Принадлежит:

The invention discloses a method for simply and conveniently preparing a high-temperature-resistant antioxidant polyphenylene sulfide fiber and a product thereof, and belongs to the technical field of modified polyphenylene sulfide fibers. The preparation method comprises the following steps: uniformly stirring and mixing a solvent, an oxidant, an auxiliary agent, a catalyst and a pH regulator to obtain a liquid-phase reaction treatment agent, keeping the pH at 2-6, and keeping the temperature at 20-50 DEG C; and immersing the polyphenylene sulfide fiber into the liquid-phase reaction treating agent for oxidation treatment, and washing and drying to obtain the high-temperature-resistant antioxidant polyphenylene sulfide fiber. The high-temperature-resistant antioxidant polyphenylene sulfide fiber prepared by the method has the advantages that the preparation process is simple, and the product not only has no molten drop and melt shrinkage phenomena, but also has better oxidation resistance ...

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11-04-2023 дата публикации

Driving characteristic data processing method and device and storage medium

Номер: CN115946710A
Принадлежит:

The invention discloses a driving characteristic data processing method and device and a storage medium, which are used for reducing the false alarm rate. The driving characteristic data processing method disclosed by the invention comprises the following steps: extracting traffic flow motion characteristics of a side lane; driving characteristics based on the single-person driving simulator are extracted; and determining a left boundary steering angle and/or a right boundary steering angle of a steering wheel steering angle of the driver without an obvious steering intention according to the side lane traffic flow motion characteristics and the driving characteristics. The invention further provides a driving characteristic data processing device and a storage medium.

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15-07-2015 дата публикации

Torque control method for hub motor system and check rack used in torque control method

Номер: CN104777825A
Принадлежит:

The invention discloses a torque control method for a hub motor system and a check rack used in the torque control method, belongs to the technical field of electric vehicles, and aims to realize the torque control method for the hub motor system and the check rack used in the torque control method, and the method is used for embedding a hub motor driving hardware system into a simulation environment of various vehicles and various complicated road traveling conditions and testing the performance of the hub motor driving system. The method comprises the following steps: a complete vehicle model building and road condition simulation part, a load part, a measurement part and a driving motor module and motor controller part. The method is relatively low in cost, relatively low in fund, manpower and site input and relatively convenient for motor parameter matching, data obtaining and complicated road condition simulation, removes the cost and danger of real vehicle testing, shortens the development ...

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09-04-2014 дата публикации

Method for controlling inlet air of turbo-charging gasoline engine

Номер: CN103711596A
Принадлежит:

The invention discloses a method for controlling inlet air of a turbo-charging gasoline engine. The method aims at omitting excessive calibration processes in the development of an electronic control unit of the gasoline engine. The method includes the steps of (1) carrying out valve opening-degree planning tracking control: computing an expectation value of air flow entering an air cylinder of the gasoline engine with a formula in the specifications according to the torque required by a driver, computing an air pressure expectation value of an air inlet manifold according to the expectation value, obtained in the last step, of the air flow entering the air cylinder, computing an expectation valve opening-degree value through the air pressure expectation value of the air inlet manifold according to a valve flow model, and carrying out PID control to achieve electronic valve opening-degree tracking control, (2) carrying out turbine vent valve opening-degree control: computing an air-stopping ...

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25-07-2023 дата публикации

Hot-rolled low-alloy steel design method based on physical metallurgy guidance industrial big data mining

Номер: CN116484745A
Принадлежит:

The invention provides a hot-rolled low-alloy steel design method for physical metallurgy guidance industry big data mining, and relates to the technical field of hot-rolled low-alloy steel and deep learning application. The method comprises the following steps: firstly, adding physical metallurgical parameters highly related to target performance into a data set, and participating in a model training and design process; meanwhile, a genetic algorithm (GA) is used for carrying out optimization design on components and a process, and finally a big data performance prediction model is used for effectively screening design results. Compared with a pure design result, machine learning under the guidance of physical metallurgy is higher in pre-measurement precision, and the design result better conforms to the principle of physical metallurgy.

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08-04-2015 дата публикации

Four-wheel-drive electric vehicle simulation modeling method based on AMESim

Номер: CN104504191A
Принадлежит:

The invention belongs to the technical field of electric vehicle control and aims to provide a four-wheel-drive electric vehicle simulation modeling method based on AMESim for a control algorithm verification platform, in order to implement effective control of four-wheel-drive electric vehicles. According to the method, set up are an overall simulation model structure, a driver simulation unit, a vehicle signal measuring and controlling unit, a four-wheel-drive system unit, an electric vehicle chassis unit, a vehicle running environment setting unit and a battery unit. The method which is a modular modeling method has the advantages that model structure is clear and simple and combining and debugging are easy.

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