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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 24. Отображено 24.
27-06-2023 дата публикации

Dynamic current sharing method for three-phase series capacitor Buck converter

Номер: CN116345895A
Автор: CHEN ZHANGYONG, XIANG TIANYU, WU YUNFENG, ZHENG ZHANCHAO, TANG XUAN, CHEN YONG
Принадлежит:

The invention provides a dynamic current sharing technology based on series capacitor charge balance and a three-phase series capacitor Buck converter device thereof, and belongs to the field of power electronics. According to the control method, the three-phase series capacitor Buck converter can be ensured to have good steady-state precision, and meanwhile, the three-phase series capacitor Buck converter can quickly respond to sudden change of load current; according to the control method, the problem that when the three-phase series capacitor Buck converter implements charge balance control, it is difficult to ensure that all state variables reach a new steady state value at the end of a transient process is solved; the control method has the advantages of being constant in switching frequency, irrelevant to converter circuit parameters, zero in steady-state error, rapid in load transient response and the like.

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Номер записи: 1
30-06-2023 дата публикации

Graphical-based modulation strategy applied to DAB converter and device

Номер: CN116365884A
Автор: CHEN ZHANGYONG, ZHENG ZHANCHAO, TANG XUAN, WU YUNFENG, CHEN YONG, XIANG TIANYU, LUO ZHIJIE
Принадлежит:

The invention provides a graphic-based modulation strategy applied to a DAB converter and device, and belongs to the field of power electronics. According to the modulation strategy, aiming at the requirements of high power density and low current stress required by the DAB, based on two modes capable of realizing the highest efficiency of the DAB, a modulation strategy aiming at inductance current peak value optimization based on graphical analysis is provided, and closed-loop PI design control is carried out on the DAB according to the provided modulation strategy. The optimization target of minimizing the inductance current peak value of the DAB in the whole power range is effectively achieved, the efficiency of the DAB is improved, the current stress of the DAB is reduced, and finally closed-loop control over the DAB is achieved.

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Номер записи: 2
12-02-2014 дата публикации

Pipeline clamping fixture

Номер: CN103574175A
Автор: CHEN ZHANGYONG, ZHANG DEFU
Принадлежит:

The invention provides a pipeline clamping fixture, which comprises a first clamping part and a second clamping part, wherein the first terminal of the second clamping part and the first terminal of the first clamping part are connected and a first clamping space is formed at a position near a joint, and the second terminal of the second clamping part and the second terminal of the first clamping part are connected in a clamping way and a second clamping space is formed at a position near a clamping part. The whole pipeline clamping fixture is a semi-open type, and adopts a buckle type design. One terminal of the pipeline clamping fixture, close to a buckle side, is an open type, and is a buckle position of the pipeline clamping fixture. During assembly, the pipeline clamping fixture is put between two parallel pipelines through an opening (the angle of the pipeline fixture is increased according to actual needs during assembly), and then a buckle is fastened, accordingly, the operation ...

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Номер записи: 3
26-11-2014 дата публикации

Noise test system and method

Номер: CN104165687A
Автор: WU WUSHENG, LYU LI, CHEN ZHANGYONG, CAI YING, LI HAO, LI JIANFENG, LI CHUANGUI, LIAO JIPING, SU BIN
Принадлежит:

The invention discloses a noise test system and method. The system includes a mute box, a digital display and a power amplifier; the mute box is parallelly arranged at one side of a production line, and includes a box body, an entrance/exit door and an observation door, the entrance/exit door is located at one side of the box body which is close to the production line, and the observation door and the entrance/exit door are oppositely arranged; both the entrance/exit door and the observation door are electric control doors, are in sliding connection with the box body, and the box body, the entrance/exit door and the observation door can form a closed chamber; the mute box is internally equipped with a noise sensor, the noise sensor is electrically connected with the digital display and an input end of the power amplifier, and an output end of the power amplifier is provided with a headset connection hole; and conveying devices are arranged at the bottom of the mute box in preset conveying ...

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Номер записи: 4
11-02-2015 дата публикации

Check valve sealing component, check valve, air conditioner and heat pump water heater

Номер: CN104344072A
Автор: WU WUSHENG, CAI YING, WU ZHEN, CHEN ZHANGYONG, LI CHUANGUI
Принадлежит:

The invention discloses a check valve sealing component. The check valve sealing component comprises a sealing component body made of elastic material, wherein the sealing component body adopts a cylinder; a first through hole is formed along the central axis of the sealing component body; a first annular bulge and a second annular bulge which are raised outwards from the peripheral wall of the sealing component body and extend in the circumferential direction of the peripheral wall are formed in the peripheral wall of the sealing component body; the first annular bulge and the second annular bulge are respectively arranged on the peripheral wall in positions close to two end surfaces of the sealing component body. The invention also discloses a check valve provided with the check valve sealing component and an air conditioner or a heat pump water heater assembled with the check valve with the check valve sealing component. The check valve sealing component is not easy to suffer alternant ...

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Номер записи: 5
23-09-2015 дата публикации

Valve seal fixed block, valve installation component and air conditioner

Номер: CN0204665597U
Автор: ZHANG DEFU, CHEN ZHANGYONG, RONG JINHUAN, LIU HAI
Принадлежит:

The utility model provides a valve seal fixed block, valve installation component and air conditioner. According to the utility model discloses a valve seal fixed block including the fixed block body, is provided with the buckle with the border joint of valve mounting hole on the fixed block body. According to the utility model discloses a valve seal fixed block, valve installation component and air conditioner, through be provided with on the fixed block body with the buckle of the border joint of valve mounting hole, installation valve seal fixed block in -process, only need with the valve seal fixed block pass through the buckle joint on the valve mounting hole can, need the fix with screw in comparing prior art, it is more convenient to install, can effectively improve the installation effectiveness.

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Номер записи: 6
04-07-2023 дата публикации

Servo motor network remote control method based on event triggering

Номер: CN116382069A
Автор: LI MENG, MIAO ZHENHAI, CHEN YONG, LIU YUEZHI, IKRAM ALI, CHEN ZHANGYONG
Принадлежит:

The invention relates to establishment of a direct-current servo motor system model containing external disturbance and design of a sliding mode control algorithm based on event triggering. The invention discloses a direct current servo motor system modeling considering external disturbance and a sliding mode control algorithm based on event triggering. The technology comprises the steps of DC servo motor system modeling considering external disturbance, sliding mode controller design, event triggering strategy design and closed-loop system stability proving. According to the method, a system state space model is established for a network remote direct-current servo motor system with external disturbance. Aiming at the requirement that network resources need to be saved in system disturbance and network remote control, the sliding mode controller based on event triggering is designed, and the stability of a closed-loop system of the sliding mode controller is analyzed and proved. According ...

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Номер записи: 7
30-06-2023 дата публикации

Logistics investigation data processing method and device

Номер: CN116364127A
Автор: LIANG JIONGJIONG, CHEN YONG, CHEN ZHANGYONG
Принадлежит:

The invention discloses a logistics investigation data processing method and device applied to the technical field of computers, a courier can inquire express delivery address information data in a server through an inquiry unit, the strong data processing capacity of the server is utilized to investigate logistics data to analyze the sending places of various expresses, and the logistics investigation data is used for processing the express delivery addresses. However, when the number of queried people is too large, the temperature of the storage disc is increased, the three-way gas transmission disc rotates anticlockwise, the gas transmission pipe is communicated with the gas filling pipe, gas can be continuously injected into the pushing hose, and therefore the pushing hose expands and pushes the guide rail to push the storage disc out of the hard disk frame, the heat dissipation efficiency of the storage disc is improved, and the service life of the storage disc is prolonged. And the ...

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Номер записи: 8
09-06-2023 дата публикации

Household garbage classification control system based on big data

Номер: CN116238825A
Автор: LIANG JIONGJIONG, CHEN YONG, CHEN ZHANGYONG
Принадлежит:

The invention provides a household garbage classification control system based on big data, which is applied to the field of collection or removal of household or similar garbage and is characterized in that a driving regulation and control group, a preprocessing group, an induction regulation and control plate, a garbage can induction unit and a preprocessing control unit are matched; according to the intelligent household garbage classification station, the garbage collection box containing kitchen garbage can be effectively and intelligently controlled, the kitchen garbage stored in the garbage collection box is effectively pretreated, the situation that the environment around the intelligent household garbage classification station is polluted by peculiar smell generated by the kitchen garbage is avoided, and the effectiveness of household garbage classification and recovery is improved; according to the household garbage classification device, improvement of the living environment ...

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Номер записи: 9
18-04-2023 дата публикации

Railway dispatching system and communication dispatching method thereof

Номер: CN115973232A
Автор: LIN ZHIQIANG, LIANG CHUNWEN, CHEN ZHANGYONG, XU GUOWEN
Принадлежит:

The invention discloses a railway dispatching system comprising a locomotive dispatching device which comprises a locomotive controller module, a locomotive communication assembly and a locomotive communication module; the mobile dispatching device comprises a shunting signaling control module, a mobile communication component and a mobile communication module; and the station dispatching device comprises a shunting controller module, a station call assembly and a station communication module. According to the railway dispatching system, the locomotive dispatching device is arranged on the train, the worker handheld mobile dispatching device is arranged, the station dispatching device is arranged in the platform dispatching room, the three devices are connected with the 5G network through the communication module, information exchange and timely communication are achieved, and then train dispatching is achieved.

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Номер записи: 10
16-05-2023 дата публикации

Model predictive control DAB converter and device based on fundamental wave modulation strategy

Номер: CN116131616A
Автор: CHEN ZHANGYONG, ZHENG ZHANCHAO, WU YUNFENG, TANG XUAN, XIANG TIANYU, HAN YUBO, LIU XIANGYU
Принадлежит:

The invention discloses a model predictive control DAB converter and device based on a fundamental wave modulation strategy, and aims to solve the problem that in traditional control of the DAB converter, when the load of the DAB converter suddenly changes, control parameters of traditional closed-loop control are possibly not suitable for new working conditions any more, and consequently a system is unstable. Model predictive control is applied to the DAB device, so that the dynamic performance of the DAB converter can be better improved.

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Номер записи: 11
07-05-2003 дата публикации

Full spectral method detecting truth/false of watermark by using currency count machine

Номер: CN0001415951A
Автор: CHEN ZHANGYONG, CHEN SHUGEN, TAN WEIQING, ZHANGYONG CHEN, SHUGEN CHEN, WEIQING TAN
Принадлежит:

This invention discloses a money counting device full spectrum watermark true/or false test method which is to illumiante the money with visible light, infrared point source, to collect profile, absolute distance of the character point and mony edge, the relationship of spectrum data between the relative distance among character points and the absolute distance of the watermark images by a sensorto be transferred to a single-chip computer to be processed and stored. In sensor takes the money spectrum data to be transferred to a single-chip computer to compute the transmissitivity, reflectivity and absorbance of the light and stored; after transferring a complete money state signals by the sensor, the single-chip computer operates on the fuzzy intelligent control technology software to accurately detect pure/false of money.

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Номер записи: 12
22-08-2023 дата публикации

Battery charge state balance adaptive droop control method based on superposition frequency

Номер: CN116632805A
Автор: CHEN ZHANGYONG, DING FUCHUAN, CHEN YONG, WANG TIEQI, SUN YIDING, CHEN ZHONGREN
Принадлежит:

In order to improve the stability and reliability of a power system and reduce loss and cost, a micro-grid technology is introduced in recent ten years. Most of energy units including renewable energy sources and stored energy are generally direct current or have direct current coupling in the conversion stage, so that the direct current micro-grid is more and more popular. However, in the DC micro-grid, due to existence of line impedance, a traditional droop control method for power balance control has the problems of insufficient power balance precision and poor voltage regulation capability. Therefore, on the basis of traditional droop control, a droop adjusting component with battery state-of-charge information, an alternating current power self-adaptive droop item with line impedance information and a voltage recovery item are introduced, and the battery state-of-charge balance self-adaptive droop control method based on the superposition frequency is provided. Simulation results show ...

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Номер записи: 13
01-08-2023 дата публикации

Model prediction control method of improved cost function based on three-level bidirectional DC-DC FC converter

Номер: CN116526842A
Автор: CHEN ZHANGYONG, WANG TIEQI, CHEN YONG, LIU YUNYAN, TANG WEIHAN
Принадлежит:

The invention discloses an improved cost function-based model prediction control method and device for a three-level bidirectional DC-DC FC converter. The method comprises the following specific steps of: 1) dividing the topology of the DC-DC-FC converter into four different working modes according to the conduction state of a power switch; 2) establishing a dynamic reference model of the dc bus voltage; and 3) introducing a PI item for tracking a current error into a cost function to improve the robustness of the system. And 4) the improved cost function is minimized, and the duty ratio of each power switch is obtained and converted into a proper switching signal. Aiming at the problems of large overshoot and long transient transition time of the traditional control method, the method has the advantages of fast dynamic response, small steady state error, basically no dynamic overshoot, insensitivity to parameters and the like.

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Номер записи: 14
01-10-2014 дата публикации

Packing box folding device

Номер: CN104071386A
Автор: WU WUSHENG, CHEN ZHANGYONG, LYU LI, CAI YING, LI HAO, LI JIANFENG, LI CHUANGUI, LIAO JIPING, SU BIN
Принадлежит:

The invention provides a packing box folding device which is used for folding paper. The packing box folding device comprises a machine frame, a shifting pressing device and a folding device. The shifting pressing device is installed on the machine frame and comprises a driving device and a pressing plate, and the pressing plate comprises a folded edge, is in transmission connection with the driving device and performs linear reciprocating motion under the driving of the driving device. The folding device is fixedly connected with the machine frame and comprises a locating block, the locating block comprises a folding plane, the folded edge corresponds to the folding plane, the pressing plate pushes the paper to move towards the folding device under the driving of the driving device, and the paper is folded to form an angle of 90 degrees through the matching of the folded edge and the folding plane. The packing box folding device has the advantages of being reasonable in design, simple ...

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Номер записи: 15
18-03-2015 дата публикации

Finger protection device

Номер: CN104413667A
Автор: CHEN ZHANGYONG, LIAO JIPING, CAI YING, WU WUSHENG
Принадлежит:

The invention discloses a finger protection device. The finger protection device is provided with a protection plate part which is used for protecting a fingerprint area of a finger and a buckling part which is used for sleeving the protection plate part on the finger; the outer side surface of the protection plate part is provided with an anti-slip structure which is in contact with a poked component. Through the arrangement, when the finger protection device provided by the invention is used for poking the poked component, the finger can be effectively protected, and the finger can be prevented from being damaged.

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Номер записи: 16
08-10-2014 дата публикации

Method for manufacturing fixed watermark paper by fourdrinier and equipment used in method

Номер: CN104088188A
Автор: HAN YONG, WANG BINGQIANG, HAN TING, WANG XING, CHEN ZHANGYONG, WANG TONG, WANG ZHONGJIE, DENG JIE, LIU SHULIN, ZHANG XIAOCHUN, ZHANG JIANGHUA, WANG BIN
Принадлежит:

The invention provides a method for making fixed watermark paper by a fourdrinier and equipment used in method. The method includes steps of (1) designing patterns and size of the fixed watermark paper; (2) selecting raw materials and auxiliary materials and making paper with pulp; (3) measuring paper deformation coefficient of a cursor position in the manufactured paper; (4) designing and making a watermark net according to measuring results of the step (3); (5) making the fixed watermark paper by the watermark net manufactured in the step (4) via the fourdrinier. The invention further provides an improved fourdrinier. The watermark paper is manufactured by the fourdrinier, speed of the fourdrinier can be properly increased, productivity is increased, production cost is reduced, and considerable economic benefits and social benefits are gained.

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Номер записи: 17
04-04-2023 дата публикации

Double-loop compensation method for suppressing torque ripple and measurement noise of permanent magnet synchronous motor servo system

Номер: CN115913021A
Автор: CHEN YONG, WAN ZHI, ZHANG WEI, CHEN ZHANGYONG, LI MENG, TANG HUI, ZHANG HUANYI
Принадлежит:

The invention discloses a double-loop compensation method for suppressing torque ripple and measurement noise of a permanent magnet synchronous motor servo system. According to the method, white noise interference in a speed encoder is suppressed through a Kalman filtering module, periodic harmonic waves and interference of a current loop are suppressed through a current compensation module comprising a notch filter and a low-pass filter, and the precision of the speed in a steady state is improved. On the basis, overlarge overshoot of a speed ring is suppressed by using a speed compensation module, white noise of a speed sensor is suppressed through a Kalman observer and a double-ring compensator, the overshoot of the speed ring is reduced, and steady-state buffeting of the speed is reduced. The method comprises the following steps: 1) suppressing measurement noise of a speed sensor; 2) suppressing periodic harmonic waves of a current loop; (3) current offset and gain errors are restrained ...

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Номер записи: 18
18-07-2023 дата публикации

Disturbance efficiency extremum searching method based on four-switch Buck-Boost with phase compensation

Номер: CN116455216A
Автор: CHEN ZHANGYONG, TANG XUAN, ZHENG ZHANCHAO, WU YUNFENG, CHEN YONG, XIANG TIANYU, LUO ZHIJIE
Принадлежит:

The invention provides a disturbance efficiency extremum searching method with phase compensation based on a four-switch Buck-Boost converter and a Buck-Boost converter device, and belongs to the field of power electronics. According to the method, disturbance efficiency extreme value search with phase compensation and PI control are combined to adjust the duty ratios Da and Db of two bridge arms of the four-switch Buck-Boost converter and control three variables of pulse phase difference. According to the invention, the relation between the duty ratio and the converter efficiency when the converter is in three-mode operation is found. And an improved extreme value search algorithm is used for searching a minimum value point of the input current, so that the algorithm has the characteristics of high speed and self-adaptive step length adjustment, and the maximum value point of the operation efficiency of the four-switch Buck-Boost converter can be effectively optimized.

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Номер записи: 19
23-06-2023 дата публикации

Three-mode adaptive control duty ratio online optimization efficiency control method based on four-switch Buck-Boost

Номер: CN116317575A
Автор: CHEN ZHANGYONG, TANG XUAN, ZHENG ZHANCHAO, WU YUNFENG, CHEN YONG, XIANG TIANYU, LUO ZHIJIE
Принадлежит:

The invention provides a three-mode adaptive control duty ratio online optimization efficiency control method based on a four-switch Buck-Boost, and aims at providing the three-mode adaptive control duty ratio online optimization efficiency control method based on the four-switch Buck-Boost, and belongs to the technical field of power electronics. When the output power is constant, the converter works in a three-mode state, and the two-phase duty ratio and the phase difference in the converter are reduced to be controlled by a single variable. According to the invention, the PI controller is adopted to stabilize the output voltage, the steepest descent method is used to realize the purpose of adaptive step length, the duty ratio of the B-phase control pulse is quickly and effectively adjusted, the control duty ratio corresponding to the highest operation efficiency is searched, the minimum value of the input current is obtained, and the operation efficiency of the converter under the constant ...

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Номер записи: 20
30-05-2023 дата публикации

Adaptive narrow frequency range PFM and AVC hybrid modulation strategy

Номер: CN116191837A
Автор: CHEN ZHANGYONG, XIAO FANGBO, CHEN YONG, TANG WEIHAN, CHEN ZHIYUAN
Принадлежит:

The invention provides an adaptive narrow frequency range PFM-AVC (Pulse Frequency Modulation-Automatic Voltage Control) hybrid modulation strategy to solve the problem that the frequency change range is too wide when the traditional PFM is applied to wide output application. The wide-range output and the wide load range are realized, and the narrow frequency change range is realized at the same time; adaptively switching the frequency omega n, shift, and adjusting according to the quality factor Q and the output gain M; and soft switching is realized in the whole working process.

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Номер записи: 21
09-12-2015 дата публикации

Chemical industry tail gas burns waste heat boiler

Номер: CN0204853510U
Автор: CHEN ZHANGYONG
Принадлежит:

The utility model discloses a chemical industry tail gas burns waste heat boiler, including the skirt, vertical installation has the tube side on the skirt, the tube side is connected with the shell side, separate through the tube sheet between tube side and the shell side, it has the tube hole to open on the tube sheet, be provided with fire -resistant insulated lining in the tube side, be provided with coil pipe strutting arrangement in the shell side, coil pipe strutting arrangement is by last supporting seat, the spliced pole at supporting seat center constitutes about under bracing seat and the vertical connection, the middle and upper supporting seat lateral part of coil pipe strutting arrangement passes through the vertical slidable mounting of slide steering device on the shell side inner wall, be provided with heat exchange coil among the coil pipe strutting arrangement, the welding of heat exchange coil top is on last supporting seat, install metal protective case on the tube ...

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Номер записи: 22
29-08-2023 дата публикации

Multi-motor servo system fixed time control method based on multi-surface sliding mode

Номер: CN116661308A
Автор: LI MENG, JING WANJUN, CHEN YONG, ZHANG QIAOFENG, CHEN ZHANGYONG
Принадлежит:

The invention discloses a multi-motor servo system fixed time control method based on a multi-surface sliding mode. The method comprises the steps of modeling of a multi-motor servo system under the influence of friction and unknown time-varying time lag, design of a fixed time tracking controller, design of a fixed time synchronous controller and design of a fixed time convergence controller. The invention discloses a synchronization and tracking control method of a multi-motor servo system based on a multi-surface sliding mode. The technology comprises the steps of modeling of a multi-motor servo system, design of a fixed time tracking controller, design of a fixed time synchronous controller and design of a fixed time convergence controller. The invention designs a fixed time tracking controller based on a multi-surface sliding mode aiming at a load tracking control problem in a multi-motor servo system. In order to realize speed synchronous control among multiple motors, a fixed time ...

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Номер записи: 23
25-07-2023 дата публикации

Interleaved parallel BOOST high-gain converter with low voltage stress

Номер: CN116488461A
Автор: CHEN ZHANGYONG, XIAO FANGBO, CHEN YONG, TANG WEIHAN, CHEN ZHIYUAN
Принадлежит:

The invention provides an interleaving parallel BOOST high-gain converter with low voltage stress, and provides a novel interleaving parallel single-input high-voltage-rise DC/DC converter topology by combining a switched capacitor and a three-level circuit on the basis of a traditional interleaving parallel boost converter. Firstly, the input of the converter adopts an interleaved boost circuit, and the topological structure is simple and symmetrical, so that the current distribution between two phases is uniform, and the current stress and the input filter are smaller; in addition, the output end adopts a switched capacitor voltage-multiplying unit to be combined with a three-level circuit, so that the output voltage gain is further improved, and the voltage stress is reduced. The switched capacitors are charged in parallel and then discharged. While voltage gain is increased, a switching device in the converter is prevented from being in an extreme duty ratio state for a long time, ripples ...

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Номер записи: 24