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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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Применить Всего найдено 8. Отображено 8.
23-06-2023 дата публикации

Capacitor rapid discharging method and device, upper computer, system and storage medium

Номер: CN116316505A
Автор: AN WEI, CHI LEI, GUI MINGYANG, CHEN LONGPO, JIAO LONGFEI, SHEN TONGQIAN, PENG HAO, LIU TAO, ZHOU XIAOLI
Принадлежит:

The invention is suitable for the technical field of electrics, and provides a capacitor rapid discharging method, device, upper computer, system and storage medium, the capacitor rapid discharging method is suitable for the capacitor rapid discharging system, and the capacitor rapid discharging system comprises at least two relays, at least two discharging resistors and the upper computer; the capacitor rapid discharging method is applied to the upper computer and comprises the following steps: calculating a time constant according to the capacitance of a to-be-discharged capacitor, initial voltages at two ends of the to-be-discharged capacitor and a preset total discharging duration; according to the time constant and a preset total discharge duration, controlling the on-off state of each relay so as to control the capacitor to be discharged to carry out rapid discharge; and when the voltage at the two ends of the to-be-discharged capacitor is low to the safe short-circuit discharge range ...

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Номер записи: 1
02-06-2023 дата публикации

Testing tool and method for internal atmosphere of vacuum packaging device and calibration method

Номер: CN116203110A
Автор: GUI MINGYANG, AN WEI, CHI LEI, CHEN LONGPO, JIAO LONGFEI, SHEN TONGQIAN, PENG HAO, ZHOU XIAOLI, LIU TAO
Принадлежит:

The invention is suitable for the technical field of electronic component detection, and provides a test tool and method for the internal atmosphere of a vacuum packaging device and a calibration method, the test tool comprises a first cavity, a second cavity, a pricking pin structure and an external heating mechanism; the first cavity is communicated with the second cavity, and the first cavity is a test cavity; in the using process of the testing tool, the first cavity is connected with a tested piece in a pressing mode and communicated with a vacuum system of a testing instrument. The second cavity is a storage cavity of standard gas; in the testing process, the standard gas is introduced into the first cavity from the second cavity; the pricking pin structure is arranged in a vacuum system of the test instrument and is used for destroying the outer package of the tested piece; the external heating mechanism is arranged on the upper surface of the first cavity and used for maintaining ...

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Номер записи: 2
28-07-2023 дата публикации

Capacitor parameter test capability verification article and preparation method thereof

Номер: CN116500397A
Автор: AN WEI, CHEN LONGPO, CHI LEI, SHEN TONGQIAN, JIAO LONGFEI, GUI MINGYANG, ZHOU XIAOLI, PENG HAO, LIU TAO
Принадлежит:

The invention is suitable for the technical field of capability verification, and provides a capacitor parameter test capability verification article and a preparation method thereof, and the capacitor parameter test capability verification article comprises a PCB, a tested capacitor, a sealing plate and a protection housing. The PCB is provided with a first calibration port, a second calibration port and a parameter test port; the tested capacitor is installed on the back surface of the PCB. The sealing plate is arranged below the PCB, and a first window hole is formed in the position, corresponding to the tested capacitor, of the sealing plate; the PCB and the sealing plate are located in the protection shell, and the upper bottom of the protection shell, the PCB and the sealing plate are sequentially attached and fixed; a second window hole is formed in the upper bottom of the protective shell, and the first calibration port, the second calibration port and the parameter test port are ...

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Номер записи: 3
11-04-2023 дата публикации

Photovoltaic inverter grid-connected surge impact protection method and device and terminal equipment

Номер: CN115954833A
Автор: WANG CHUNLEI, JIA HAIXU, WANG PENG, YIN WEI, HAO SHICHAO, NIU YILIN, JI FENGQUN, ZHANG YONG, YANG YIYAN, JIAO LONGFEI
Принадлежит:

The invention is suitable for the technical field of surge protection, and provides a photovoltaic inverter grid-connected surge impact protection method and device, and terminal equipment, and the method comprises the steps: inputting a first harmonic wave of a preset frequency to a photovoltaic inverter after the grid connection of the photovoltaic inverter, and obtaining a first resonant voltage effective value and a first resonant current effective value, a grid-connected current and a grid-connected voltage are obtained; obtaining a resonance frequency point based on the first resonance voltage effective value and the first resonance current effective value; obtaining a resonance frequency point frequency, a resonance frequency point current instantaneous value, a resonance frequency point voltage instantaneous value, a current convergence interval and a voltage convergence interval based on the resonance frequency point, the grid-connected current and the grid-connected voltage; and ...

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Номер записи: 4
18-07-2023 дата публикации

Modeling method, device and equipment for machine tool screw joint part analysis model

Номер: CN116451547A
Автор: JIAO LONGFEI, WANG BINGXU, ZHEN YICHAO, ZHAO ZHONGHAI, CAI XINYI, WANG DAI, YU FEI
Принадлежит:

The invention provides a modeling method, device and equipment for a machine tool screw joint part analysis model, and belongs to the field of optimization design of dynamic characteristics of a whole machine tool, and the method comprises the steps: building a machine tool finite element model; according to the temperature field data and the static field data of the machine tool, the real contact state of the machine tool screw joint part is determined; according to the real contact state of the machine tool screw joint part and the machine tool finite element model, a machine tool screw joint part analysis model is determined, and therefore the linear dynamics analysis result of the machine tool can be obtained. The method can save the research and development period of the machine tool, reduce the number of iterations of the machine tool version, and effectively improve the quality of the machine tool.

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Номер записи: 5
23-06-2023 дата публикации

Preparation device and preparation method of water vapor standard gas

Номер: CN116272679A
Автор: GUI MINGYANG, AN WEI, CHI LEI, JIAO LONGFEI, SHEN TONGQIAN, CHEN LONGPO, PENG HAO, ZHOU XIAOLI, LIU TAO
Принадлежит:

The invention is applicable to the technical field of detection and test of microelectronic devices, and provides a preparation device and a preparation method of water vapor standard gas, the preparation device of the water vapor standard gas comprises a first cavity, a second cavity, a gas inlet valve, a first exhaust valve, a second exhaust valve and a mechanical piston; the left side of the first cavity is connected with an air inlet valve through an air inlet, the right side of the first cavity is connected with a first exhaust valve through a first exhaust port, and a first communicating hole is formed in the upper surface of the first cavity; the first cavity is used for introducing hydrogen mixed gas; the right side of the second cavity is connected with a second exhaust valve through a second exhaust port, and the lower surface of the second cavity communicates with the first cavity through a first communicating hole; the second cavity is used for introducing oxygen mixed gas; ...

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Номер записи: 6
23-06-2023 дата публикации

Universal test fixture and test method for surface-mounted sensitive radio frequency device

Номер: CN116298411A
Автор: JIAO LONGFEI, CHI LEI, CHEN LONGPO, GUI MINGYANG, AN WEI, SHEN TONGQIAN, PENG HAO, ZHOU XIAOLI, LIU TAO
Принадлежит:

The invention is suitable for the field of general testing of surface-mounted sensitive radio frequency devices, and provides a general testing clamp and testing method for surface-mounted sensitive radio frequency devices. The upper cover main body is provided with a threaded through hole; the rotary stud is arranged in the threaded through hole and is fixedly connected with the rotary top cover; the rubber mat pressing block is fixed below the upper cover main body, and a first bulge is arranged at the lower bottom of the rubber mat pressing block; the base body is arranged below the upper cover body, the rubber mat pressing block is located between the upper cover body and the base body, the base body is provided with a positioning guide frame, and the size and the position of the positioning guide frame are matched with those of the first protrusions; the bottom plate is arranged below the base main body; a PCB test board is arranged between the base main body and the bottom plate; ...

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Номер записи: 7
26-05-2023 дата публикации

Diode electrical parameter test capability verification device and preparation method thereof

Номер: CN116165498A
Автор: AN WEI, GUI MINGYANG, CHI LEI, LIU TAO, CHEN LONGPO, JIAO LONGFEI, SHEN TONGQIAN, PENG HAO, ZHOU XIAOLI
Принадлежит:

The invention is suitable for the technical field of semiconductor performance parameter testing, and provides a diode electrical parameter testing capability verification device and a preparation method, and the device comprises a tested diode, a housing, and a heat dissipation structure. A tested diode is fixed on the heat dissipation structure by a fastening screw; the shell and the heat dissipation structure are welded together through parallel seal welding, and the shell and the heat dissipation structure wrap the main body part of the tested diode; a first through hole is formed in a lower cover sheet of the shell; two test pins of the tested diode pass through the first through hole and are arranged outside the shell; the first through hole limits the rotation of the diode to be tested in the direction around the fastening screw; a sealant is arranged at the first through hole of the tested diode and the lower cover plate, and a sealant is arranged at the joint of the fastening screw ...

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Номер записи: 8