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    • 6. 发明授权
    • Redundant active electromagnetic bearing
    • 冗余有源电磁轴承
    • US4392693A
    • 1983-07-12
    • US352265
    • 1982-02-25
    • Helmut HabermannMaurice Brunet
    • Helmut HabermannMaurice Brunet
    • F16C39/06F16C39/00
    • F16C32/0442F16C32/0451
    • The present invention relates to an active electromagnetic bearing comprising first and second sets of electromagnet coils, the two sets of coils being so placed on one armature that on each double-pole part of armature are wound one coil of the first set and one coil of the second set and that the successive coils of the first set are all wound in the same direction whereas the coils of the second set which duplicate the coils of the first set are alternately wound in the same direction and in opposite directions with respect to the corresponding coils of the first set, a detector for sensing the position of the movable member and a control circuit being associated with each set of coils, and switch-over means being provided for connecting either set of coils with the corresponding control circuit in response to a control signal.
    • 本发明涉及一种包括第一组和第二组电磁线圈的有源电磁轴承,两组线圈被放置在一个电枢上,在电枢的每个双极部分上缠绕着第一组的一个线圈和一个线圈 第二组的第一组的连续线圈都以相同的方向缠绕,而复制第一组的线圈的第二组的线圈相对于相应的方向沿相同的方向和相反的方向交替地卷绕 第一组的线圈,用于感测可移动部件的位置的检测器和与每组线圈相关联的控制电路,并且提供切换装置,用于响应于一个线圈将两组线圈与相应的控制电路相连接 控制信号。
    • 7. 发明授权
    • Device for compensating the gain of a servo-controlled circuit by
negative current feedback
    • 通过负电流反馈补偿伺服控制电路的增益的装置
    • US4308490A
    • 1981-12-29
    • US12333
    • 1979-02-15
    • Helmut HabermannMaurice Brunet
    • Helmut HabermannMaurice Brunet
    • G05B11/32F16C32/04F16C39/06G05B11/36G05D3/12H01F7/18G05D23/275
    • F16C32/0451
    • The invention relates to a device for compensating the gain of a circuit servo-controlling the position of a rotor with the aid of at least one electromagnetic bearing provided with electromagnet windings, from signals delivered by at least one detector detecting the position of the rotor, the servo-control circuit ensuring the control of the supply of the windings in response to the signals delivered by the detectors and comprising an amplification circuit with which is associated a negative current feedback loop, said device further comprising supplementary electrical means for injecting at the input of the amplification circuit a signal depending on the variations in the airgap of the servo-controlled electromagnetic bearing, in a predetermined variation frequency zone. The invention is more particularly applicable to electronic circuits for controlling active electromagnetic bearings.
    • 本发明涉及一种用于补偿电路伺服的增益的装置,借助至少一个具有电磁铁绕组的电磁轴承,借助至少一个检测转子位置的检测器发出的信号来控制转子的位置, 伺服控制电路确保响应于由检测器传送的信号来控制绕组的供应,并且包括与负电流反馈回路相关联的放大电路,所述装置还包括用于在输入端注入的补充电气装置 根据伺服控制的电磁轴承的气隙的变化,在预定的变化频率区域中,放大电路的信号。 本发明更具体地适用于用于控制有源电磁轴承的电子电路。
    • 8. 发明授权
    • Active radial magnetic bearing with solid rotor for damping critical
frequencies
    • 具有固体转子的主动径向磁轴承用于阻尼临界频率
    • US4866318A
    • 1989-09-12
    • US131310
    • 1987-12-08
    • Helmut HabermannMaurice BrunetAlain Gerbier
    • Helmut HabermannMaurice BrunetAlain Gerbier
    • F16C32/04F16C39/06
    • F16C32/0444F16C32/048
    • Active radial magnetic bearing with solid rotor comprising a stator composed of an armature and electromagnetic coils, a rotor fast with a rotary shaft and placed opposite the stator, detectors for detecting the radial position of the rotor with respect to the stator, and servo-control circuits for adjusting the current going through the electromagnetic coils according to the value of the signals delivered by said position detectors.The electromagnetic coils are so designed as to create a rotating sinusoidal magnetic field with radial flux, the electromagnetic coils comprising a plurality of windings distributed over the periphery of the stator and supplied in succession one after another from the servo-control circuits.This type of bearing helps going through critical frequencies.
    • 具有固体转子的主动径向磁轴承包括由电枢和电磁线圈构成的定子,具有旋转轴的转子和定子相对放置的转子,用于检测转子相对于定子的径向位置的检测器和伺服控制 用于根据由所述位置检测器传送的信号的值调节经过电磁线圈的电流的电路。 电磁线圈被设计成产生具有径向磁通的旋转正弦磁场,电磁线圈包括分布在定子的周边上并从伺服控制电路依次相继提供的多个绕组。 这种类型的轴承有助于经历临界频率。
    • 9. 发明授权
    • Tool holding spindle assembly particularly for a grinding machine
    • 工具夹持主轴装置,特别适用于磨床
    • US4180946A
    • 1980-01-01
    • US883213
    • 1978-03-03
    • Mats C. D. HeijkenskjoldOlle (Olof) J. G. HedbergVello KlaassenSture V. LarssonHelmut HabermannMaurice Brunet
    • Mats C. D. HeijkenskjoldOlle (Olof) J. G. HedbergVello KlaassenSture V. LarssonHelmut HabermannMaurice Brunet
    • B23Q1/70B23Q5/10B24B41/04F16C39/06B24B5/00
    • F16C32/0444B23Q1/70B23Q5/10B24B41/044F16C32/0489F16C2322/39
    • The tool-holding spindle assembly, particularly for a grinding machine, comprises means for supporting the shaft of the spindle and a power drive, for example an electric motor for rotating the spindle. The support means comprise at least one electromagnetic radial bearing controlled by a radial detector, having an annular armature mounted on the shaft of the spindle and a fixed armature surrounding this annular armature, an electromagnetic axial bearing having a disc-shaped armature mounted on the shaft of the spindle and a fixed armature, a chain for controlling the radial and/or axial position of the spindle, said chain being connected on the one hand to at least one detector of the radial and/or axial position of the spindle, and on the other hand to excitation coils of the armatures of each magnetic bearing, and means for selectively modifying the signal generated by said at least one position detector. This tool-holding spindle assembly makes it possible to give a rotating spindle a high speed of rotation and the desired rigidity for obtaining a very high machining precision. Further, precise displacements of the tool of limited amplitude may be controlled by modifying the detector's output signal.
    • 工具保持主轴组件,特别是用于研磨机的工具保持主轴组件包括用于支撑主轴的轴的装置和动力驱动器,例如用于旋转主轴的电动机。 支撑装置包括由径向检测器控制的至少一个电磁径向轴承,其具有安装在主轴的轴上的环形衔铁和围绕该环形衔铁的固定电枢,电磁轴向轴承,其具有安装在轴上的盘形电枢 的主轴和固定电枢,用于控制主轴的径向和/或轴向位置的链条,所述链条一方面连接到主轴的径向和/或轴向位置的至少一个检测器上,并且在 另一方面涉及每个磁性轴承的电枢的励磁线圈,以及用于选择性地修改由所述至少一个位置检测器产生的信号的装置。 该工具保持主轴组件使得可以使旋转主轴具有高转速和所需的刚度,以获得非常高的加工精度。 此外,可以通过修改检测器的输出信号来控制有限幅度的刀具的精确位移。
    • 10. 发明授权
    • Magnetic bearings
    • 磁性轴承
    • US4012083A
    • 1977-03-15
    • US574690
    • 1975-05-05
    • Helmut HabermannMaurice Brunet
    • Helmut HabermannMaurice Brunet
    • F16C32/04F16C39/06F16C39/00
    • F16C32/0474
    • This invention relates to magnetic bearings and particularly to active magnetic bearings having a very low "friction couple". In accordance with the invention the active magnetic bearing is of the type which has a stator formed by an electromagnetic circuit having at least one pair of north and south poles, and wherein said electromagnetic circuit of said stator includes at least one electromagnet of U-shaped section. The arms of said U form north pole and south poles respectively and the electromagnet is so arranged that the plane of symmetry which separates the north pole from the south pole lies perpendicularly to the axis of rotation of the magnetic bearing.
    • 本发明涉及磁性轴承,特别涉及具有非常低“摩擦力”的主动磁轴承。 根据本发明,主动磁轴承是具有由具有至少一对北极和南极的电磁回路形成的定子的类型,并且其中所述定子的所述电磁回路包括至少一个U形电磁体 部分。 所述U形的北极和南极的臂和电磁体被布置成使得北极与南极分开的对称平面垂直于磁轴承的旋转轴线。