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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.
06-01-2016 дата публикации

Gas transmission pipeline monitoring data acquisition and processing equipment

Номер: CN0204945706U
Автор: MIN XIHUA, ZHAO MIN, WU YI, XIAO LIAN, YANG YONGHE, RAO XIN, TIAN YE, MU JINLIANG, JIANG YUYOU, LI KUN, FENG WEI, WANG XIAOHANG, XU GUANGDA, JIA HAIDONG, GAO FUCHAO, QUE YONGBIN, GAO TAO, GENG LIYUAN, XIONG JINGEN
Принадлежит:

The utility model discloses a gas transmission pipeline monitoring data acquisition and processing equipment, include: first sensor, an adc, a crystal oscillator, a microprocessor, second sensor, the 2nd adc, the 2nd crystal oscillator, the 2nd microprocessor, ethernet controller, network transformer, RJ45 interface. An adc only inserts the first sensor, and the 2nd adc only inserts the second sensor, because every adc only connects an adc, has guaranteed sampling rate and sampling precision, makes the embodiment of the utility model provides a sampling rate and the sampling precision of the signal of gas transmission pipeline monitoring data acquisition and processing equipment output can satisfy the online real -time supervision requirement of daily gas transmission pipeline.

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Номер записи: 1
23-06-2023 дата публикации

Error compensation system and method for direct-current voltage transformer

Номер: CN116299136A
Автор: JI YIRUN, HUAI QING, YUAN QIAN, HU YINGHONG, SONG PENG, LU YI, ZHAO YUAN, GAO JING, XU GUANGDA, XIE LIFANG
Принадлежит:

The invention provides an error compensation system and method for a direct-current voltage transformer. The system comprises a sampling circuit, a controller, a compensation circuit and a switch assembly. Wherein the input end of the sampling circuit is connected to a to-be-sampled voltage through the switch assembly, and outputs a corresponding sampling value to the controller; the controller calculates a secondary circuit error according to a rated transformation ratio and a sampling value of a secondary circuit of the direct-current voltage transformer, and outputs the secondary circuit error to the compensation circuit; the compensation circuit performs secondary circuit error compensation based on the secondary circuit error when the error compensation system of the direct-current voltage transformer is in an error monitoring compensation working mode. According to the invention, the error on-line monitoring and compensation of the secondary circuit of the direct-current voltage transformer ...

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Номер записи: 2
28-07-2023 дата публикации

Numerical control cam grinding lift error compensation method based on position of driving shaft

Номер: CN116494084A
Автор: ZHOU HUICHENG, WU GUANGLI, NING XUEYAN, XU GUANGDA, HU ZIFANG
Принадлежит:

The invention belongs to the related technical field of numerical control machining, and discloses a numerical control cam grinding lift error compensation method based on the position of a driving shaft. The method comprises the following steps: S1, acquiring actual contour or lift data of a machined cam, calculating actual displacement sequences of a C axis and an X axis for controlling relative movement of the cam and a grinding wheel in a grinding process, and calculating a displacement error sequence; s2, correcting C-axis coordinates in the displacement error sequence to obtain a C-axis coordinate sequence according to response lag characteristics of the C-axis and the X-axis of the machine tool; calculating to obtain an X-axis compensation value sequence; the C-axis coordinate sequence and the X-axis compensation sequence form a displacement compensation sequence; and S3, a preset theoretical displacement sequence is compensated through the displacement compensation sequence, and ...

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Номер записи: 3
23-06-2023 дата публикации

Real-time broken cutter monitoring method and system based on edge calculation

Номер: CN116276310A
Автор: ZHOU HUICHENG, CHEN JIAYAO, CHEN JIHONG, YANG JIANZHONG, XU GUANGDA
Принадлежит:

The invention discloses a real-time broken cutter monitoring method and system based on edge calculation, and belongs to the technical field of numerical control. Before monitoring, an edge calculation module is connected with a numerical control system, and an acquisition card and a vibration sensor are connected through an interface on the edge calculation module; during trial machining, the edge calculation module synchronizes and caches all trial machining vibration amplitude data and spindle current data, and determines a spindle current data change threshold value and upper and lower limit values of the spindle current data; during monitoring, the edge calculation module is connected with the numerical control system, the edge calculation module obtains main shaft current data in the numerical control system, and when the variable quantity of the main shaft current in a preset time period exceeds a main shaft current data change threshold value or the main shaft current exceeds an ...

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Номер записи: 4
08-08-2023 дата публикации

Resonance detection method and device for new energy power system

Номер: CN116559555A
Автор: GAO JING, LU YI, ZHAO YUAN, XU GUANGDA
Принадлежит:

The invention provides a resonance detection method and device for a new energy power system, and relates to the technical field of new energy. The method comprises the following steps: carrying out wavelet packet transformation on a grid-connected voltage signal according to a preset filter bank to obtain a plurality of sub-bands sorted according to a frequency size sequence, and extracting the sub-band with the maximum signal fluctuation amplitude from the plurality of sub-bands as a target sub-band where a resonance signal is located; carrying out waveform matching on the characteristic waveform in the target sub-band to obtain a matched waveform, and respectively carrying out continuation on end points on two sides of the matched waveform towards the directions of the end points; and analyzing the extended signal to obtain the resonant frequency and amplitude of the new energy power generation grid-connected system. The device executes the method. According to the resonance detection ...

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Номер записи: 5
06-01-2016 дата публикации

Long gas transmission pipeline distributing type monitoring inertia time service system

Номер: CN0204945644U
Автор: MIN XIHUA, ZHAO MIN, WU YI, XIAO LIAN, YANG YONGHE, RAO XIN, TIAN YE, MU JINLIANG, JIANG YUYOU, LIN XIAOFEI, LI KUN, QIU SHUJUAN, FENG WEI, WANG XIAOHANG, XU GUANGDA, HU CHUNPING, LIU FENGMING, SUN BINGBING, YANG TAO
Принадлежит:

The utility model discloses a long gas transmission pipeline distributing type monitoring inertia time service system adds GPS time service system (comprising GPS antenna, GPS receiver, central processing unit ) and high accuracy clock system (comprising central processing unit and high accuracy temperature compensation type crystal oscillator ) simultaneously in the system. Compensate the time service task of GPS time service system under the abnormal behavior with high accuracy clock system. When the normal during operation of GPS system, carry out the time service with the GPS system, if the GPS system is influenced by weather, geomagnetic field and leads to the fact the in disorder or unable time service of time service, do the inertia time service with the high accuracy clock, guaranteed the long gas transmission pipeline distributing type interconnected system task in the time of accomplishing incessant high accuracy under any external disturbance circumstances of monitoring.

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Номер записи: 6
18-08-2023 дата публикации

Machine tool acceleration parameter identification and optimization method and system based on instruction domain analysis

Номер: CN116610067A
Автор: YANG JIANZHONG, LEE CHANG-JUN, XU GUANGDA, HUANG DEHAI
Принадлежит:

The invention discloses a machine tool acceleration parameter identification and optimization method and system based on instruction domain analysis, and belongs to the technical field of motion parameter identification of a numerical control machine tool feeding system.The method comprises the steps that machine tool operation data are associated with motion parameters with instruction rows as units, and a machine tool operation characteristic curve is obtained; acquiring a static identification result from the machine tool operation characteristic curve and setting the static identification result to the machine tool; when a machining task is executed, acceleration parameters are dynamically optimized and adjusted in the pilot running process according to a machine tool running characteristic curve to enable a machine tool to run in the optimal state, and then batch production is conducted. The method solves the technical problems that in the prior art, the acceleration and deceleration ...

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Номер записи: 7
25-04-2023 дата публикации

Data acquisition platform of numerical control system edge computing module and numerical control system

Номер: CN116009459A
Автор: XU GUANGDA, YANG JIANZHONG, ZHOU HUICHENG, YU ZHIQI, CHEN WENFENG, CHEN MING
Принадлежит:

The invention discloses a numerical control system edge computing module data acquisition platform and a numerical control system, the numerical control system edge computing module data acquisition platform comprises a driving layer and an interface layer, the driving layer performs data interaction with a data link layer, and the interface layer performs data interaction with an application program; the driving layer constructs an independent structural body for each slave station according to the real-time state information of each slave station contained in the uplink data of each slave station separated from the periodic lumped frame, and stores the real-time state information of each slave station into the corresponding structural body to complete the real-time state description of each slave station; and caching the real-time state information corresponding to each slave station to the cache region of the corresponding sampling channel, and providing data service for intelligent ...

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Номер записи: 8
15-08-2023 дата публикации

Converter and power distribution network electric energy quality interactive processing method and device

Номер: CN116595699A
Автор: XU GUANGDA, LU YI, ZHAO YUAN, LI YU, SONG PENG, LIU LIANG, GAO JING, MA XINSHENG, CAI WEI, WANG ZEZHONG, LIU SHEN, HUANG XIAOLONG, ZONG JIN, LONG FEI, XIAO HAN, LI ZHENCHENG, CUI LEI, ZHANG JIAN, YUAN WENQIAN, ZHANG CHAO
Принадлежит:

The invention provides a converter and power distribution network power quality interactive processing method and device, and the method comprises the steps: obtaining the basic parameters of a converter and the basic parameters of a power distribution network, and determining a plurality of power quality influence models according to the basic parameters of the converter and the basic parameters of the power distribution network; establishing a converter and power distribution network power quality interaction model by using the power quality influence model; wherein the current converter and power distribution network power quality interaction model is used for performing quantitative analysis processing of power quality interaction on the power distribution network comprising the current converter. According to the method, quantitative electric energy quality interaction analysis is carried out on the low-voltage distribution network comprising the power electronic converter, the electric ...

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Номер записи: 9
18-08-2023 дата публикации

Power distribution network power quality evaluation method, device and system

Номер: CN116613823A
Автор: LU YI, XU GUANGDA, ZHAO YUAN, LI YU, SONG PENG, LIU LIANG, GAO JING, MA XINSHENG, CAI WEI, WANG ZEZHONG, LIU SHEN, HUANG XIAOLONG, ZONG JIN, LONG FEI, XIAO HAN, LI ZHENCHENG, CUI LEI, ZHANG JIAN, YUAN WENQIAN, ZHANG CHAO
Принадлежит:

The invention discloses a power distribution network power quality evaluation method, device and system, and the method comprises the steps: determining a current power quality index according to the obtained real-time current amount, and determining a voltage power quality index according to the obtained real-time voltage amount; obtaining a preset access capacity value of the distributed energy, taking the current electric energy quality index and the voltage electric energy quality index as electric energy quality indexes, and performing fitting processing on the access capacity value and the electric energy quality indexes to obtain a linear function; and adjusting the access capacity value until the electric energy quality index reaches a preset threshold value, and taking the access capacity value at the moment as an electric energy quality evaluation result. The method can measure the electric energy quality level of the low-voltage power distribution network, screens out the power ...

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Номер записи: 10
23-09-2015 дата публикации

Numerical control machine work process CPS modeling method based on instruction domain analysis

Номер: CN104932421A
Автор: CHEN JIHONG, YANG JIANZHONG, XU GUANGDA, ZHOU HUICHENG, XIANG HUA
Принадлежит:

The invention discloses a numerical control machine work process CPS modeling method based on instruction domain analysis. The method comprises the steps that: (1) before a numerical control machine performs work tasks, beforehand work task data and beforehand manufacture resource data are determined; (2) internal electronically controlled data and external sensor data in a numerical control machine work process are acquired to acquire numerical control machine operation state data, in-process work task data and in-process manufacture resource data; and (3) manufacture resources and the work tasks are used as input and the numerical control machine operation state is used as output to establish a relevant mapping relationship in a cyberspace, and the mapping relationship is used as a CPS model of the numerical control machine work process to realize CPS modeling of the numerical control machine work process. According to the method provided by the invention, the manufacture resource data ...

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Номер записи: 11
28-07-2023 дата публикации

Semi-physical joint simulation device and method for multi-axis feeding system of numerical control machine tool

Номер: CN116500971A
Автор: YANG JIANZHONG, CHEN HUAQIU, XU GUANGDA, HAO YONG, XIANG DANQI
Принадлежит:

The invention discloses a semi-physical joint simulation device and method for a numerical control machine tool multi-axis feeding system, and belongs to the technical field of numerical control machine tool feeding system simulation, and the device comprises a computer numerical control module which is used for generating a motion control instruction; the simulation and real-time control module is used for building and operating a multi-axis feeding system servo control algorithm model to generate a PWM wave control signal; the motor and driving module is used for generating electromagnetic torque based on the PWM wave control signal; the machine tool feeding system mechanical module is used for executing mechanical movement of the feeding system based on the electromagnetic torque; wherein the computer numerical control module, the motor and driving module and the machine tool feeding system mechanical module are all physical structures of a numerical control machine tool, and the simulation ...

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Номер записи: 12
15-08-2023 дата публикации

Method and device for determining dynamic characteristics of photovoltaic inverter system

Номер: CN116599138A
Автор: XU GUANGDA, ZHAO YUAN, LU YI, LI YU, SONG PENG, LIU LIANG, GAO JING, MA XINSHENG, CAI WEI, WANG ZEZHONG, LIU SHEN, HUANG XIAOLONG, ZONG JIN, LONG FEI, XIAO HAN, LI ZHENCHENG, CUI LEI, ZHANG JIAN, YUAN WENQIAN, ZHANG CHAO
Принадлежит:

The invention provides a photovoltaic inverter system dynamic characteristic determination method and device, and the method comprises the steps: obtaining basic parameters of a photovoltaic inverter system, and determining a time domain dynamic characteristic model of the photovoltaic inverter system according to the basic parameters of the photovoltaic inverter system; determining a control loop transfer function of the photovoltaic inverter system according to the basic parameters; performing linearization processing on a nonlinear link in the time domain dynamic characteristic model of the photovoltaic inverter system to obtain a time domain dynamic characteristic model after linearization processing; obtaining a dynamic output characteristic model of the photovoltaic inverter system by using a control loop transfer function and the linearized time domain dynamic characteristic model; the dynamic output characteristic model is used for determining the dynamic characteristics of the ...

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Номер записи: 13
08-08-2023 дата публикации

Machine tool feeding system mathematical model parameter identification method based on gradient optimization

Номер: CN116560301A
Автор: YANG JIANZHONG, DUAN JIHANG, XU GUANGDA, HUANG DEHAI
Принадлежит:

The invention belongs to the related technical field of numerical control machine tools, and discloses a machine tool feeding system mathematical model parameter identification method based on gradient optimization. The method comprises the following steps: S1, establishing a mathematical model of a machine tool feeding system; s2, collecting actual operation data of the machine tool; setting an initial parameter to be identified; constructing a to-be-identified parameter updating model; s3, inputting a preset instruction position signal and the current to-be-identified parameter into the to-be-identified parameter updating model to update the to-be-identified parameter, simulating and calculating a loss function by using the updated identification parameter, and judging the relationship between the current loss function and the optimal loss function: if less than the optimal loss function, retaining the value of the current to-be-identified parameter, and otherwise, retaining the value ...

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Номер записи: 14