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公开(公告)号：US11493581B2
公开(公告)日：2022-11-08
申请号：US17707963
申请日：2022-03-30
Inventor： Xiaotao Han , Zelin Wu , Qinying Liu , Qi Chen , Quanliang Cao , Liang Li
Abstract: Disclosed are a pulse magnet device based on magnetic flux compression, and a high-flux measurement method. The device includes a diamagnetic block, reinforcing plates, screw rods and a magnet coil. The diamagnetic block and the magnet coil are concentrically arranged in the axial direction; the reinforcing plates are arranged at ends of the magnet coil and the diamagnetic block and are connected by means of the screw rods. The diamagnetic block is used for inducing the induction current opposite the coil current during the discharge of the magnet coil, and for compressing the magnetic field to the area between the diamagnetic block and the magnet coil. The intensity and uniformity of the magnetic field around the magnet coil are improved by means of increasing the magnetic flux density.
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公开(公告)号：US11346866B2
公开(公告)日：2022-05-31
申请号：US17288000
申请日：2020-12-03
Inventor： Xiaotao Han , Shaozhe Zhang , Yilin Wang , Jianfeng Xie
Abstract: A fast-response direct-current current transformer based on multi-sensor fusion is provided and includes: a magnetic modulator, a current correction module, an excitation transformer, an alternating current detection and filtering circuit, a phase-sensitive demodulation and filtering system, a PI controller, and a power amplifier. The current correction module measures a primary current and obtain a feed-forward signal, outputs a false balance state configured to control a magnetic core to quickly exit or avoid entering magnetic saturation after amplifying the feed-forward signal and a PI control signal, and keeps output of the magnetic modulator stable. The magnetic modulator and Hall current sensors are fused in the disclosure, such that the possibility of failure due to a false balance problem caused by saturation of a magnetic core is reduced. After the false balance is generated, the magnetic core may be controlled to quickly exit a magnetic saturation state through a feed-forward output current.
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3.发明授权公开(公告)号：US11705263B2
公开(公告)日：2023-07-18
申请号：US17595633
申请日：2021-05-08
Inventor： Liang Li , Quanliang Cao , Xiaotao Han , Yuwei Ju
IPC: H01F13/00
CPC classification number: H01F13/00
Abstract: The present invention belongs to the technical field of magnetically controlled soft-bodied robots, and more specifically, relates to a controllable and reconfigurable magnetization system and method for a magnetic soft-bodied robot. The system comprises a pulse power supply module, magnetizing coil units axisymmetrically arranged up and down, and a magnetic soft-bodied robot placed between the upper and lower magnetizing units. By means of changing the relative current flow direction of the upper and lower magnetizing coil modules, radial and vertical magnetic fields can be generated between the magnetizing coils arranged oppositely without any mechanical movement, so that the internal magnetization direction of the magnetic soft-bodied robot can be configured simply and flexibly. The present invention realizes for the first time the particle magnetization and synchronization of bidirectional orientations, and decouples the material preparation process of the magnetic soft-bodied robot from the magnetization process, so that the entire manufacturing process is very simple. Moreover, the internal magnetization distribution is reconfigurable, which provides a completely new technical approach for realizing multifunctional magnetic soft-bodied robots.
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公开(公告)号：US11471926B2
公开(公告)日：2022-10-18
申请号：US17283956
申请日：2020-06-13
Inventor： Xiaotao Han , Zelin Wu , Qi Chen , Quanliang Cao , Liang Li
IPC: B21D26/14 , B21D43/00 , H01M8/0208 , H01M8/0258 , H01M8/10
Abstract: Electromagnetic manufacturing method and forming device of mesoscale plate are provided. The manufacturing method includes: oppositely and parallelly disposing a first workpiece to be formed on top of a mold, side-press restraining two ends of the first workpiece, and disposing a deceleration block on two sides of the mold; controlling the first workpiece to tend toward the mold and to be deformed under the drive of uniform electromagnetic force; and colliding a middle area of the first workpiece firstly with the mold under the drive of uniform electromagnetic force, and driving the speed of the middle area of the first workpiece to decelerate to zero. When an area close to the two ends collides with the deceleration block and until the speed of all areas of first workpiece decelerates to zero, forming is completed. Shaping is tending further toward the mold through electromagnetic force until completely fitted to the mold.
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