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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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Применить Всего найдено 3. Отображено 3.
11-08-2023 дата публикации

Elastic substrate stretching device for assisting in reducing processing spacing of nano dot matrix

Номер: CN116577969A
Автор: XIE FEI, LIANG LILI, LI YAN, LI GUOYU, JIA SUMEI, YANG KANG, WANG ZHIHUI
Принадлежит:

The invention belongs to the technical field of femtosecond laser direct writing processing, and discloses an elastic substrate stretching device for assisting in reducing the processing spacing of a nano dot matrix, and the elastic substrate stretching device comprises a metal frame, a first stretching assembly and a second stretching assembly, the first stretching assembly is provided with a first stretching part and a second stretching part which are oppositely located on the two sides of the square groove, the first stretching part and the second stretching part can be close to or away from each other through a first driving piece, and the second stretching assembly is provided with a third stretching part and a fourth stretching part which are oppositely located on the other two sides of the square groove. Through simple and flexible mechanical stretching adjustment, the density of one-dimensional and two-dimensional dot matrixes machined on the elastic substrate through the laser ...

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Номер записи: 1
24-06-2015 дата публикации

Linear automatic tunable annular cavity fiber laser

Номер: CN104733987A
Автор: LI GUOYU, LI YAN, YANG KANG, WANG ZHIHUI, JIA SUMEI, LIU MINGSHENG
Принадлежит:

The invention relates to a linear automatic tunable annular cavity fiber laser. A fiber wavelength division multiplexing device 2, a first fiber isolator 3, an erbium-doped gain fiber 4, a fiber circulator 5, a fiber grating 6 and a fiber coupler 7 are used for constituting an annular cavity for a tunable fiber laser, for outputting narrow-linewidth high-power single-single longitudinal-mode laser. A strain type sensor 12 attached to piezoelectric ceramic 10 is used for monitoring stretching or shortening of piezoelectric ceramic 6 in real time. In combination with a constant current source 13 in a piezoelectric ceramic driving source 11, a sawtooth wave signal generator 14 and a displacement compensation module 15, closed-loop control is carried out. Thus, linear automatic tunability of the annular cavity fiber laser can be realized. The tunable annular cavity fiber laser is simple in process, low in cost, narrow in linewidth and fast in tuning speed, can realize automatic tunability g ...

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Номер записи: 2
30-12-2015 дата публикации

Balanced harmonious cantilever beam alignment jig of motor drive

Номер: CN0204924565U
Автор: WANG ZHIHUI, LIU MINGSHENG, LI YAN, XIE FEI, ZHENG WENHUA, YANG KANG, LI GUOYU, JIA SUMEI
Принадлежит:

The utility model relates to a balanced harmonious cantilever beam alignment jig of motor drive, motor 1, universal driving shaft 3, around the harmonious structure of balance of son 4, plumb -line 5, 6 common constitution cantilever beams on the rings can effectively reduce the nonlinear effect of cantilever beam. Be carved with the scale on the support 8, it is accurate to 1mm, can correspond the harmonious degree that the sureness grating is come to the excursion of scale on the support through 12 at the point of intersect observing support 8 and cantilever beam 7 to reach the fine tuning control. Host computer 1 pivoted speed and the time of 13 control motors to the realization is to the linear automatic tuning of grating output spectrum wavelength. Strain gauge sensor 14 attached on cantilever beam 7 constitutes error feedback module with host computer 13, and the control cantilever beam carries out real -time error compensation, and this kind of closed -loop control has guaranteed ...

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Номер записи: 3