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公开(公告)号：US20210293301A1
公开(公告)日：2021-09-23
申请号：US17257858
申请日：2019-10-17
Inventor： Wei JIANG , Xuedong CHEN , Jiulin WU
Abstract: A multi-dimensional magnetic negative-stiffness mechanism and a multi-dimensional magnetic negative-stiffness vibration isolation system composed thereof are provided. The multi-dimensional damping system is composed of a positive-stiffness mechanism, a multi-dimensional negative-stiffness mechanism, a floating frame, a vibration isolated body, and a mounting base. The positive-stiffness mechanism is a traditional elastic element connected to the vibration isolated body and the mounting base, and provides supporting forces in an X direction, a Y direction, and a Z direction, and a basic vibration isolation function. The multi-dimensional negative-stiffness mechanism is composed of at least two negative-stiffness magnetic groups. Each negative-stiffness magnetic group may provide one-dimensional or two-dimensional negative stiffness. Through a series connection of the at least two negative-stiffness magnetic groups, a two-dimensional or three-dimensional negative-stiffness effect may be implemented to improve the vibration isolation performance of the system in multiple dimensions.
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Patent Agency Ranking
公开(公告)号：US20170045107A1
公开(公告)日：2017-02-16
申请号：US15118776
申请日：2014-06-20
Inventor： Xuedong CHEN , Zilong LI
IPC: F16F6/00
CPC classification number: F16F6/005 , F16F6/00 , F16F2222/06 , F16F2228/063 , F16F2232/08
Abstract: A single-degree-of-freedom magnetic vibration isolation device belongs to vibration isolation devices and solves the following problems: the existing active and passive combined vibration reduction system is complex in structure, needs energy supply, and has low reliability. The present invention includes a metal conductor sleeve, a base, an upper annular permanent magnet, a lower annular permanent magnet, a connecting rod and a center permanent magnet; poles of the upper annular permanent magnet and the lower annular permanent magnet facing to each other have reverse polarity, which are connected to an upper end and a lower end of an inner wall of the metal conductor sleeve respectively; the center permanent magnet is concentrically sleeved on the connecting rod and fixedly connected therewith, and the center permanent magnet is located between the upper annular permanent magnet and the lower annular permanent magnet, and is capable of moving axially together with the connecting rod between the upper annular permanent magnet and the lower annular permanent magnet; and the pole of the center permanent magnet facing to the poles of the upper annular permanent magnet and the lower annular permanent magnet have reverse polarity. The present invention is simple in structure, does not need energy supply, has high reliability, and can generate a static magnetic force and a dynamic magnetic force. Connecting the device according to the present invention with a passive vibration isolation system in parallel can effectively improve the passive vibration isolation performance of the original system.
Abstract translation: 一种单自由度磁振动隔离装置属于隔振装置，解决了以下问题：现有的主动，无源联合减振系统结构复杂，需要能源供应，可靠性低。 本发明包括金属导体套管，基座，上环形永磁体，下环形永磁体，连杆和中心永磁体; 上环形永久磁铁和下环形永久磁铁彼此面对的磁极具有相反极性，分别与金属导体套筒内壁的上端和下端相连; 中心永磁体同心地套在连接杆上并与之固定连接，中心永磁体位于上环形永磁体和下环形永磁体之间，并且能够与连杆之间轴向移动， 环形永磁体和下环形永磁体; 并且中心永磁体的面对上环形永磁体和下环形永磁体的极的极具有相反的极性。 本发明结构简单，不需要能量供应，可靠性高，可产生静磁力和动磁力。 将本发明的设备与被动隔振系统并联连接可有效提高原有系统的被动隔振性能。
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3.发明申请公开(公告)号：US20220402629A1
公开(公告)日：2022-12-22
申请号：US17359666
申请日：2021-06-28
Inventor： Bin Han , Xuedong CHEN
Abstract: A multi-level structure conveying system and method for assisting UAV landing are provided. The system includes conveying units and modular bottom plates. The modular bottom plate provides line connection between a power supply and a controller for the conveying unit. The conveying unit drives a UAV to move through driving a conveyor to move. Placement of the conveying units in different directions is used to control a movement direction of the UAV. The conveying units are connected through side plate modules to be arranged into conveying modules with different trajectories. The UAV moves on the conveying modules under driving of each conveying unit to reach a target position. A side plate bump of each conveying unit is sleeved opposite to a side plate recess of the adjacent conveying unit. A hollow channel formed by side plate holes of the adjacent conveying units is fixed by adopting a connecting shaft.
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4.发明公开公开(公告)号：US20240322663A1
公开(公告)日：2024-09-26
申请号：US18679469
申请日：2024-05-31
Inventor： Lizhan ZENG , Kai LIU , Xuedong CHEN
CPC classification number: H02K41/031 , H01L21/68 , H02K2201/18
Abstract: The disclosure discloses a magnetic levitation planar motor workbench having a double-layer winding of coarse and fine drive, which belongs to the technical field of planar motors, and includes a stator and a mover. The vertically magnetized permanent magnets and the horizontally magnetized permanent magnets in the stator are arranged in a Halbach arrangement; the mover is located on the enhanced side of the air gap magnetic field above the stator. The mover adopts the double-layer winding of unequal heights, and the height of the upper first winding is smaller than the lower second winding. Each layer of winding may generate driving forces in six directions to achieve six-degree-of-freedom driving.
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公开(公告)号：US20220402567A1
公开(公告)日：2022-12-22
申请号：US17359671
申请日：2021-06-28
Inventor： Bin Han , Xuedong CHEN
IPC: B62D57/028 , B62D57/02
Abstract: A planetary wheel type obstacle crossing robot, including a frame, a front drive set, and a rear drive set, is provided. The front drive set and the rear drive set are respectively connected to a front end and a rear end of the frame. The front drive set includes a dual-drive steering wheel structure, which includes two drive wheels and two first drive devices. The first drive devices respectively output different rotational speeds to the drive wheels, so that the dual-drive steering wheel structure rotates. The rear drive set includes two planetary wheel sets, two second drive devices, and a planetary wheel set suspension structure. Each planetary wheel set is individually driven and includes a front wheel, a rear wheel, and an upper wheel. The wheels of each planetary wheel set cooperate to climb over an obstacle under an action of a driving torque output by the second drive device.
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公开(公告)号：US20170082144A1
公开(公告)日：2017-03-23
申请号：US15126537
申请日：2014-04-02
Inventor： Wei JIANG , Xuedong CHEN , Xin LUO , Lizhan ZENG
CPC classification number: F16C32/0607 , F16C29/00 , F16C29/025 , F16C32/0614 , F16C32/067 , F16C2233/00 , F16C2322/39
Abstract: The present invention discloses an active airbearing device, including a airbearing body, a gas film active adjusting unit, a support body detection unit and a drive control unit, wherein the support body detection device measures a state of airbearing, the drive control system generates a control signal according to a detection signal, drives and controls the gas film active adjusting device to generate an active action, and dynamically adjusts the form of gas films on a airbearing surface, so as to dynamically adjust pressure distribution of gaps between the gas films of the airbearing device, thereby improving dynamic stiffness characteristics of the airbearing. Through the present invention, the dynamic stiffness characteristics of the airbearing can be improved significantly, and the purpose of stabilizing the airbearing is achieved; in addition, the active airbearing device according to the present invention also has the characteristics of a compact structure, convenient operation and control, and high precision, and thus is especially suitable for occasions such as ultra-precision machining or high speed spindle which has high requirements for dynamic stiffness of support.
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