公开(公告)号：US20230411993A1

公开(公告)日：2023-12-21

申请号：US17911113

申请日：2022-06-21

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Peng E ,  Jian GUAN ,  Xun MA ,  Hongtao LI ,  Weijun DENG ,  Mingjun DING ,  Chuanhui KANG ,  Songjie LI ,  Jinshui XIAO ,  Juan ZHAO ,  Jie WAN ,  Li TAN ,  Liyi LI

IPC: H02J13/00

CPC classification number: H02J13/00001 ,  H02J13/00017 ,  B64G2007/005

Abstract: The present disclosure provides a data acquisition and control system of pulsed power supply for multi-load, and relates to the technical field of pulsed power. The system of the present disclosure is configured to control 18 sets of pulsed power supplies to provide 18 coils with stable and reliable excitation current featuring multiple output time sequences and flexible adjustability, such that a near-earth space plasma environment ground-based simulation device can simulate the magnetic field topology of the earth magnetosphere and realize a background magnetic field required by physical experiments. The system mainly achieves the following functions: control over charge and discharge of pulsed power supplies, selection of power supplies put in use, “delay trigger” setting, voltage monitoring, status monitoring of key components and output current display; and it is also necessary to realize failure alarm and failure handling for the purpose of ensuring the safety of equipment and personnel.

公开(公告)号：US20220336136A1

公开(公告)日：2022-10-20

申请号：US17699240

申请日：2022-03-21

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Zhiyin SUN ,  Liyi LI ,  Donghua PAN ,  Kai SONG ,  Yuxi LIU ,  Yinxi JIN ,  Zhilong ZOU

IPC: H01F13/00

Abstract: A demagnetization method for a multilayer shielding apparatus is provided. In the demagnetization method, the demagnetization is realized on the basis of a demagnetization coil system. The demagnetization coil system includes a plurality of turns of demagnetization coils (2), a plurality of connection wires and a power supply module. The multilayer shielding apparatus includes at least two layers of shielding bodies (1); all the layers of shielding bodies (1) are sleeved layer by layer from inside to outside; a plurality of turns of demagnetization coils (2) are wound on each layer of shielding bodies (1) at intervals; and one half of each turn of demagnetization coils (2) is located inside the wound shielding bodies (1), and the other half is located outside the wound shielding bodies (1). Each demagnetization coil (2) is connected to the power supply module through the corresponding connection wire.

公开(公告)号：US20220157505A1

公开(公告)日：2022-05-19

申请号：US17667635

申请日：2022-02-09

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Zhiyin SUN ,  Liyi LI ,  Donghua PAN ,  Kai SONG ,  Yuxi LIU ,  Liguo TAN ,  Yiyang ZHAO

IPC: H01F13/00 ,  H01F7/20

Abstract: A distributed demagnetizing coil system, a shielding device, and a demagnetizing method. The system includes turns of demagnetizing coils evenly wound on each shielding surface of a shielding body in the shielding device at intervals and connecting wires provided on outer side of the shielding surface in an inflection manner. One half of each turn is located on inner side of the wound shielding body and the other half of each turn s located on outer side of the wound shielding body for providing corresponding demagnetizing magnetic fields to form a closed magnetic flux loop. One half of each connecting wire is connected to the corresponding demagnetizing coil, the other half of each connecting wire is reversely inflected along an original path and is connected to a power supply module, so that corresponding demagnetizing current is introduced into each demagnetizing coil connected to the connecting wire.

公开(公告)号：US20210141854A1

公开(公告)日：2021-05-13

申请号：US17152844

申请日：2021-01-20

Applicant: Harbin Institute of Technology

Inventor： Jiwei CAO ,  Liyi LI ,  Chengming ZHANG ,  Jiaxi LIU ,  Mingyi WANG

IPC: G06F17/14

Abstract: The disclosure discloses a Fourier analysis method with a variable sampling frequency, including the following steps: S100 preliminarily sampling a to-be-analyzed signal by comparing an initially set sampling frequency, and further analyzing its fundamental frequency and fundamental amplitude value by Fourier analysis; S200 preliminarily judging the fundamental amplitude value obtained through analysis to determine a sampling frequency meeting integer period truncation, and resampling the signal; S300 performing Fourier analysis on the sampled signal, and determining an optimum sampling frequency, i.e., an optimum sampling frequency both meeting the integer period truncation and meeting no spectrum leakage, by a three-spectral line method; and S400 resampling the signal to obtain a frequency and amplitude value composition of each harmonic. The disclosure can realize high-precision and high-frequency signal acquisition and analysis by using a smaller sampling frequency, the cost of an acquisition system is reduced, and an analysis speed is accelerated.