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    MAGNETIC BEARING DEVICE AND VACUUM PUMP
    2.
    发明公开
    MAGNETIC BEARING DEVICE AND VACUUM PUMP 审中-公开

    公开(公告)号：US20240352937A1

    公开(公告)日：2024-10-24

    申请号：US18293628

    申请日：2022-08-23

    申请人： Edwards Japan Limited

    发明人： Takaaki Ono

    IPC分类号： F04D19/04 ,  F04D29/058 ,  F16C32/04

    CPC分类号： F04D19/048 ,  F04D29/058 ,  F16C32/0451 ,  F16C32/048

    摘要： A magnetic bearing device and a vacuum pump configured to measure with high sensitivity a natural vibration mode of a rotating body in a floating system using a magnetic bearing. The natural vibration to be measured is a bending mode of the rotating body, a natural vibration mode of the rotor blades, a vibration mode associated with the stator, and a rigid body mode of the rotating body. The natural vibration may be computed by a central processing unit (CPU) of a control device or may be computed externally. In this manner, the natural vibration mode can be detected with high sensitivity.

    MAGNETIC THRUST BEARING SYSTEMS
    4.
    发明公开
    MAGNETIC THRUST BEARING SYSTEMS 审中-公开

    公开(公告)号：US20240337290A1

    公开(公告)日：2024-10-10

    申请号：US18331698

    申请日：2023-06-08

    申请人： General Electric Company

    发明人： Anand M S ,  Ravindra Shankar Ganiger ,  David Raju Yamarthi

    IPC分类号： F16C32/04 ,  H02K7/09

    CPC分类号： F16C32/0474 ,  H02K7/09 ,  H02K2205/03

    摘要： Magnetic thrust bearing systems are disclosed. Examples disclosed herein include a thrust bearing system comprising a thrust disc protruding radially outward from a shaft, the thrust disc including a first magnet, the first magnet including a first pole at a forward side of the thrust disc and a second pole at an aft side, a first thrust pad positioned on the forward side, the first thrust pad including a second magnet adjacent to a first surface of the first thrust pad, the first surface facing the thrust disc, the second magnet including a third pole, the third and first pole having the same polarity, and a second thrust pad including a third magnet adjacent to a second surface of the second thrust pad, the second surface facing the thrust disc, the third magnet including a fourth pole, the fourth and second pole having the same polarity.

    Controlling magnetic levitation equipment
    6.
    发明授权
    Controlling magnetic levitation equipment 有权

    公开(公告)号：US12092156B2

    公开(公告)日：2024-09-17

    申请号：US18234515

    申请日：2023-08-16

    申请人： SPINDRIVE OY

    发明人： Alexander Smirnov ,  Nikita Uzhegov

    IPC分类号： F16C32/04

    CPC分类号： F16C32/0451 ,  F16C32/0457 ,  F16C32/0474

    摘要： There is provided a controller for magnetic levitation equipment comprising a plurality of current source modules for connecting to at least one power supply for direct current, DC, and said current source modules comprising current channels for actuating coils of the magnetic levitation equipment, and a controller device connected to the current source modules by a control connection for controlling switching of electric current by the current source modules to the current channels. The current source modules combine discrete components for amplifying and switching electric current to the current channels into a single package. In this way, manufacturing and maintenance of the controller is facilitated, since manufacturing and maintenance may be based on the current source modules instead of discrete components, e.g. gate drivers, IGBTs, power mosfets and diodes.

    DEVICE FOR CONTROLLING A SPINDLE OF A GRINDING MACHINE, ASSOCIATED METHOD AND ASSOCIATED GRINDING MACHINE
    10.
    发明公开
    DEVICE FOR CONTROLLING A SPINDLE OF A GRINDING MACHINE, ASSOCIATED METHOD AND ASSOCIATED GRINDING MACHINE 审中-公开

    公开(公告)号：US20240139908A1

    公开(公告)日：2024-05-02

    申请号：US18487463

    申请日：2023-10-16

    申请人： SKF Magnetic Mechatronics

    发明人： Francis BIENAIME ,  Yannick Paul ,  Sylvain Palmeri ,  Gerald AUBÉ

    IPC分类号： B24B51/00 ,  B24B41/04 ,  F16C32/04

    CPC分类号： B24B51/00 ,  B24B41/044 ,  F16C32/0451

    摘要： A device (21) for controlling a spindle of a grinding machine (1) is disclosed. The spindle includes a rotor (5) supported by two radial magnetic bearings, one axial bearing, and a grinding wheel (6). The device includes a storage means (22) for storing control coefficients of the magnetic bearings. The device includes a means for determining a type of the grinding wheel and a type of the rolling bearing ring. A selection means (23) selects control coefficients associated with the determined types of grinding wheel and of rolling bearing ring from among the control coefficients stored in the storage means. The device also includes a means (23) for controlling the radial and axial magnetic bearings. Said means controlling the radial and axial (12) magnetic bearings on the basis of the control coefficients of the determined types of grinding wheel and of rolling bearing ring.