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    • 68. 发明申请
    • BEARINGLESS MOTOR
    • 无轴承电机
    • US20100231076A1
    • 2010-09-16
    • US12733981
    • 2009-01-19
    • Akira ChibaMasatsugu TakemotoTadashi Fukao
    • Akira ChibaMasatsugu TakemotoTadashi Fukao
    • H02K7/09
    • F16C32/0459F16C32/0493F16C2360/44H02K7/09
    • Provided is a bearingless motor capable of stably performing magnetic levitation and rotation even when a thrust disk is not provided and gap length is wide.A unit 101 of a first bearingless motor is formed of a stator 41 and a core 61, while a unit 103 of a second bearingless motor is formed of a stator 43 and a core 63. A thrust magnetic bearing unit 102 formed of a core 62 and a stator 42 while having the functions of a thrust magnetic bearing is newly arranged between the unit 101 and the unit 103. A stator-side annular thrust permanent magnet 73 and a rotor-side annular thrust permanent magnet 81 are arranged between the unit 101 and the unit 103, while a stator-side annular thrust permanent magnet 75 and a rotor-side annular thrust permanent magnet 83 are arranged between the unit 102 and the unit 103.
    • 提供一种无轴承电动机,即使在不设置止推盘和间隙长度的情况下也能够稳定地进行磁悬浮和旋转。 第一无轴承马达的单元101由定子41和芯61形成,而第二无轴承马达的单元103由定子43和芯63形成。由芯62形成的推力磁轴承单元102 并且在单元101和单元103之间新设有具有推力磁轴承功能的定子42.定子侧环形推力永磁体73和转子侧环形推力永磁体81设置在单元101 单元103,同时定子侧环形推力永磁体75和转子侧环形推力永磁体83布置在单元102和单元103之间。
    • 69. 发明申请
    • Active Magnetic Bearing With Automatic Detection Of The Position Thereof
    • 主动磁轴承自动检测位置
    • US20070195479A1
    • 2007-08-23
    • US10593611
    • 2005-03-16
    • Yann TremaudantMaurice BrunetUlrich Schroeder
    • Yann TremaudantMaurice BrunetUlrich Schroeder
    • H02K7/09H01H47/00
    • F16C32/0448F16C32/0459
    • An active magnetic bearing (100) with autodetection of position, the bearing comprising at least first and second opposing electromagnets (120, 130) forming stators disposed on either side of a ferromagnetic body (110) forming a rotor and held without contact between said electromagnets. The first and second electromagnets (120, 130) each comprising a magnetic circuit (121; 131) essentially constituted by a first ferromagnetic material and co-operating with said ferromagnetic body to define an airgap, together with an excitation coil (122; 132) powered from a power amplifier whose input current is servo-controlled as a function of the position of the ferromagnetic body relative to the magnetic circuits of the first and second electromagnets. The position of the ferromagnetic body (110) being measured from the inductance detected between the two electromagnets (120, 130) in response to simultaneous injection into both opposing electromagnets of a sinusoidal current at a frequency that is greater than the closed loop passband of the system. The magnetic circuit (121; 131) of each electromagnet further includes a portion (124; 134) in the vicinity of the excitation coil (122; 132) that uses a second ferromagnetic material having magnetic permeability that is lower than that of the first material and electrical resistivity that is higher than that of the first material so as to encourage the passage of the high frequency magnetic fields that are generated in the bearing.
    • 一种具有自动检测位置的主动磁轴承(100),所述轴承包括至少第一和第二相对电磁体(120,130),所述至少第一和第二相对的电磁体(120,130)形成定子,所述定子设置在形成转子的铁磁体(110)的任一侧上,并且保持在所述电磁体 。 第一和第二电磁体(120,130)各自包括基本上由第一铁磁材料构成并与所述铁磁体配合以限定气隙的磁路(121; 131)以及励磁线圈(122; 132) 由输入电流作为铁磁体相对于第一和第二电磁体的磁路的位置的函数进行伺服控制的功率放大器供电。 铁磁体(110)的位置是根据在两个电磁体(120,130)之间检测到的电感测量的,响应于以大于该闭环通带的频率的正弦电流的两个相对的电磁体同时注入 系统。 每个电磁体的磁路(121; 131)还包括在激励线圈(122; 132)附近的使用具有低于第一材料的导磁率的第二铁磁材料的部分(124; 134) 电阻率高于第一材料的电阻率,以促进在轴承中产生的高频磁场的通过。
    • 70. 发明申请
    • Device for magnetically suspending a rotor
    • 用于磁悬浮转子的装置
    • US20070164627A1
    • 2007-07-19
    • US11652190
    • 2007-01-11
    • Maurice BrunetLuc BaudelocqueArmand Lapierre
    • Maurice BrunetLuc BaudelocqueArmand Lapierre
    • H02K7/09
    • H02K7/09F16C32/0459F16C32/047F16C32/0476F16C32/0489
    • The device for magnetically suspending a rotor relative to a structure comprises at least one axial active magnetic bearing with a main electromagnet coil disposed in a stator and having load-bearing surfaces placed facing an armature extending essentially perpendicularly to the axis of the rotor. A device for detecting the axial position of the rotor is associated with circuits for servo-controlling the current carried by the main electromagnet coil. A compensation coil is disposed close to the main electromagnet coil, but in a position that is situated away from the load-bearing surfaces of the stator that co-operate with the rotor armature. The compensation coil is connected in series with the main electromagnet coil, but carries current in the opposite direction to that carried by said main electromagnet coil. The device constitutes an axial abutment of optimized capacity without magnetic leakage.
    • 用于相对于结构磁性悬挂转子的装置包括至少一个轴向有源磁轴承,其中设置在定子中的主电磁线圈,并具有面向基本上垂直于转子的轴线延伸的衔铁的承载表面。 用于检测转子的轴向位置的装置与用于伺服控制由主电磁线圈承载的电流的电路相关联。 补偿线圈设置在主电磁线圈附近,但位于远离与转子衔铁协作的定子的承载表面的位置。 补偿线圈与主电磁线圈串联连接,但是与所述主电磁线圈承载的方向相反的方向承载电流。 该装置构成优化的能力而没有漏磁的轴向抵接。