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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.
15-05-2013 дата публикации

Centrifugal fan

Номер: CN103104555A
Автор: Lin Xingchen, Huang Xiangrong
Принадлежит:

A centrifugal fan comprises an impeller and a shell body. The impeller comprises a shaft core and a fan blade, and the impeller is covered by the shell body. The shell body comprises an upper shell body, a lower shell body, at least one convex portion and a first air inlet, wherein the convex portion is arranged above at least one of the upper shell body and the lower shell body and positioned around the fan blade, the first air inlet is arranged on the upper shell body, the first air inlet comprises a first area and a second area, and the diameter of the first area is larger than that of the second area. The centrifugal fan can reduce pressure leakage caused by air backflow, can increase air inlet amount by adjusting the size of the air inlet and can achieve the best heat radiation effects.

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Номер записи: 1
11-07-2012 дата публикации

Centrifugal fan

Номер: CN102562618A
Автор: Lin Xingchen, Huang Xiangrong
Принадлежит:

The invention discloses a centrifugal fan, which comprises a shell. A surrounding portion and an air inlet portion are arranged on a first surface of the shell, and the surrounding portion surrounds the air inlet portion. The total area of the surrounding portion and the air inlet portion is equal to the projection area of blades, which are projected to the first surface, of the fan, and a protruded structure is arranged on the surface of the surrounding portion. Accordingly, the centrifugal fan can resolve the problem of overflow, so that characteristics of the centrifugal fan are improved.

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Номер записи: 2
20-11-2013 дата публикации

Method for synchronizing measured data of star sensor/optical fiber inertial equipment

Номер: CN103398713A
Автор: Gao Wei, Lin Xingchen, Ben Yueyang, Wu Lei, Wang Qiuying, Xu Bo, Zhou Guangtao, Wang Gang, Yu Qiang, Chen Shitong
Принадлежит:

The invention discloses a method for synchronizing measured data of a star sensor/optical fiber inertial equipment. The method comprises the following steps of: (1) collecting an attitude quaternion q, output by the star sensor, of a star sensor coordinate system relative to an inertia coordinate system; (2) obtaining a synchronizing time difference between a gyroscope and the star sensor by adopting a single chip microcomputer; (3) obtaining a posture quaternion q-hat output by the gyroscope by utilizing the synchronizing time difference [delta]t obtained by the step (2) through an extrapolation algorithm; (4) establishing an error quaternion[delta]q by utilizing the star sensor output data q and the gyroscope data q' provided by the steps (1) and (3), so as to establish a system model; (5) carrying out filtering estimation on the system model established by the step (4) by applying an asynchronous filtering algorithm; and (6) carrying out data fusion to obtain high-precision speeds, positions ...

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Номер записи: 3
20-11-2013 дата публикации

Method for measuring horizontal-longitude initial value in polar-region mode of inertial navigation system

Номер: CN103398724A
Автор: Ben Yueyang, Bao Guiqing, Ye Pan, Lin Xingchen, Zhao Weiheng, Ruan Shuangshuang, Yang Xianglong, Yin Donghan
Принадлежит:

The invention discloses a method measuring for a horizontal-longitude initial value in a polar-region mode of an inertial navigation system. The measuring method comprises the following steps: acquiring longitude information and geographic latitude information outputted by the inertial navigation system in a normal mode; measuring geocentric latitude information by utilizing geographic latitude of the position of the inertial navigation system; obtaining a measured value of horizontal geocentric latitude according to the longitude and the geocentric latitude outputted by the inertial navigation system; and obtaining a measured value of the horizontal geocentric longitude according to the longitude, the geocentric latitude and the horizontal geocentric latitude outputted by the inertial navigation system. The measuring method has the advantages that the geocentric latitude is measured by the geographic latitude outputted by the inertial navigation system, the error caused by generally considering ...

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Номер записи: 4
18-12-2013 дата публикации

Pipeline flaw detection system navigation and location method based on IMU (Inertial Measurement Unit)

Номер: CN103453903A
Автор: Ben Yueyang, Yang Jiaolong, Li Jingchun, Che Yanting, Liu Xinyuan, Zhao Weiheng, Ruan Shuangshuang, Yang Xianglong, Xie Songlin, Lin Xingchen
Принадлежит:

The invention discloses a pipeline flaw detection system navigation and location method based on an IMU (Inertial Measurement Unit). The pipeline flaw detection navigation and location method comprises the following steps: carrying out two groups of inertial navigation calculation simultaneously on one set of IMU output data; when a pipeline flaw detection system passes through a fixed magnetic tag, receiving position reference signals of the fixed magnetic tag, when the pipeline flaw detection system receives three groups of position reference signals, readjusting an SINS2 (Strapdown Inertial Navigation System 2) by using a difference between three groups of received position reference signals and SINS1 output positions at corresponding moment as a measurement amount: measuring a course error delta K(tn+2) and a gyroscopic drift Epsilon and compensating, and correcting a position error of the SINS2; carrying out dead reckoning by using the speedometer information and a course and a ...

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Номер записи: 5
04-07-2012 дата публикации

Centrifugal fan

Номер: CN102536850A
Автор: Lin Xingchen, Huang Xiangrong
Принадлежит:

The invention discloses a centrifugal fan which comprises fan blades, a driving device and a shell, wherein the driving device is connected with the fan blades and drives the fan blades to rotate; the shell covers the fan blades and the driving device so as to form a flow channel in the shell; the flow channel comprises a supercharging region and an open region; the shell comprises an axial air inlet region and at least one radial air outlet; the axial air inlet region comprises a base plate and a plurality of ribs; the base plate is provided with a center; the plurality of ribs are connected between the base plate and the shell, and a plurality of air inlets are formed among the ribs, the base plate and the shell; and the greatest distance from the edge of the air inlet of the open region to the center is greater than that from the edge of the air inlet in the supercharging region to the center.

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Номер записи: 6
20-11-2013 дата публикации

Star-sensor-based initial alignment method of strapdown inertial navigation system

Номер: CN103398725A
Автор: Gao Wei, Lin Xingchen, Bao Guiqing, Lin Mengmeng, Zhu Minghong
Принадлежит:

The invention discloses a star-sensor-based initial alignment method of a strapdown inertial navigation system. The initial alignment method comprises the following steps of: determining the initial positions of carriers; obtaining a position matrix according to the initial positions; obtaining a transfer matrix from an inertial coordinate system to an earth coordinate system, acquiring the output of the star sensor, determining an initial alignment matrix, and resolving attitude information by the strapdown inertial navigation system; estimating gyro drift. According to the initial alignment method, an attitude error angle is taken as observed quantity and the Kalman filtering technology is utilized for estimating the gyro drift; the alignment accuracy is enhanced and the accuracy is remarkably enhanced along with time increasing. The characteristic of enhancing high-accuracy carrier attitudes of the star sensor is utilized, the error is small and the speed is high; based on the initial ...

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Номер записи: 7
13-11-2013 дата публикации

Measurement method of transverse meridian curvature radius of inertial navigation system

Номер: CN103389096A
Автор: Ben Yueyang, Bao Guiqing, Yang Xianglong, Lin Xingchen, Ruan Shuangshuang, Zhao Weiheng, Ye Pan, Yin Donghan
Принадлежит:

The invention discloses a measurement method of the transverse meridian curvature radius of an inertial navigation system. The measurement method comprises the following steps: collecting position data output by a polar area mode of the inertial navigation system; measuring the transverse geocentric latitude; measuring the distance between an intersection point of a transverse meridian on which the inertial navigation system is arranged and a transverse equatorial plane and the geocentre; measuring the distance between the inertial navigation system and the transverse equatorial plane; measuring the transverse meridian plane curvature radius. By adopting the measurement method, the transverse meridian plane curvature radius can be measured by using the position output by the polar area mode of the inertial navigation system on the basis of an earth ellipsoid model; a measurement error caused by an inaccurate earth model is reduced in principle; the navigation accuracy is improved; meanwhile ...

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Номер записи: 8

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