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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 3. Отображено 3.
16-09-2015 дата публикации

Coal bed gas rope held coring device

Номер: CN0204646157U
Автор: ZHANG SHIHUAI, XIA ANJUN, LU JIANQIANG, SONG BO, YANG GUANGDA, WANG DAN, WANG ZHIQIANG, ZENG XIANGZHOU, YIN SHUCEN, YAN KAI, WU YAOWEN, JIANG FEI, XU YUN
Принадлежит:

The utility model discloses a coal bed gas rope held coring device, including bullet card, centralizer, urceolus and drill bit, bullet card, centralizer, urceolus and drill bit loop through the screw thread and fuse, cylindric arch is made to up end middle part an organic whole of drill bit, the inside lower extreme open -ended cavity that is provided with of drill bit, the cavity extends to protruding insidely, the inside gas storage storehouse that is provided with of urceolus, the gas storage storehouse is connected with the business turn over trachea, be connected with a plurality of fixture on the bellied perisporium, fixture is including running through the depression bar and the pressure head of connection in depression bar one end in the arch, the other end of depression bar is provided inside the gas storage storehouse, be provided with the recess that can supply the pressure head to stretch into on the bellied inside wall, the utility model discloses a fixture has realized the ...

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Номер записи: 1
16-09-2015 дата публикации

Logging is dormitory folding bed device for prefab houses

Номер: CN0204635681U
Автор: ZHANG SHIHUAI, LI PEISHENG, XIA ANJUN, LU JIANQIANG, YAN JIANXUE, MENG FANZHOU, LUO SHENGJUN, WANG GUOQING, HE MAOBIN, ZHANG DUOWEN
Принадлежит:

The utility model discloses a logging is dormitory folding bed device for prefab houses, including bed board and two fixed strips that have the first articulated seat, the bed board is provided between two fixed strips and controls both ends and all be connected with first articulated seat is articulated, be provided with slot and counter sink on the fixed strip, the front end both sides of bed board all hand over there is the support bar, the lower extreme activity of support bar is pegged graft in the slot, support bar and fixed strip are fixed through the bolt that runs through in fixed strip and support bar, the articulated seat of a pair of second of bed board up end front side fixedly connected with, be provided with the baffle between the articulated seat of second, both ends are all articulated with the articulated seat of second about the baffle, fixedly connected with limiting plate on the bed board of baffle front side, the utility model discloses a to folding of bed board, effectively ...

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Номер записи: 2
02-06-2023 дата публикации

Brush direct current motor control method

Номер: CN116208035A
Автор: HE LONG, WANG FENGXIANG, ZHANG SHUO, YAN BINGYANG, HE HONGBIN, XIA ANJUN, HUANG DONGXIAO
Принадлежит:

The invention relates to a motor control method, in particular to a brush direct-current motor control method, a drive circuit of a brush direct-current motor adopts an H-bridge circuit, the H-bridge circuit is provided with four switching tubes, and the two ends of the motor of the brush direct-current motor have three voltage states which are respectively 0, 1, 2, 3, 4, 5, 6, 7, 7, 8, 8, 9, 10, 11, 12, 12, 13, 14, 16, 17, 17, 17, 17, 17, 17, 17, the control method comprises the steps of establishing a brush direct current motor model, controlling gain optimization, designing a generalized proportional-integral disturbance observer based on a predetermined time sliding mode reaching law, controlling current and the like, by designing the predetermined time sliding mode reaching law, it is guaranteed that a control system converges within fixed time, the convergence speed is high, and the control precision is high. The current control precision is relatively high, and meanwhile, model parameters ...

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Номер записи: 3