Disk storage device, with hub and drive motor rotor features
    1.
    发明授权
    Disk storage device, with hub and drive motor rotor features 失效
    磁盘存储设备,带轮毂和驱动电机转子功能

    公开(公告)号:US5801900A

    公开(公告)日:1998-09-01

    申请号:US466702

    申请日:1995-06-06

    Abstract: A disk storage device including a housing surrounding a clean chamber, at least one storage disk having a central opening, at least one data head mounted on the housing for movement in operative relationship with the disk within the clean chamber, and motor elements for rotating the disk within the clean chamber. The motor elements include a rotatable member positioned within the clean chamber. The rotatable member has a cylindrical outer surface portion that extends into the central opening of the storage disk and is supported by a shaft and bearing system. A stator including magnetically active parts is mounted on a support member, which also supports the shaft and bearing system. The stator has a magnetic flux-producing section having poles positioned on the same side of the support member as the rotatable member. The rotatable member includes a cylindrically-shaped magnetic flux-producing and conducting element including a ferromagnetic ring and an annular permanent magnet spaced from the poles of the stator by a substantially cylindrical air gap. Further, the outside diameter of the cylindrically-shaped magnetic flux-producing and conducting element is larger than the diameter of the central opening of the storage disk.

    Abstract translation: 一种盘存储装置,包括围绕清洁室的壳体,具有中心开口的至少一个存储盘,安装在壳体上的至少一个数据头,用于与清洁室内的盘操作关系,以及用于旋转 清洁室内的磁盘。 电机元件包括位于清洁室内的可旋转构件。 可旋转构件具有延伸到存储盘的中心开口中并由轴和轴承系统支撑的圆柱形外表面部分。 包括磁性活性部件的定子安装在支撑构件上,支撑构件也支撑轴和轴承系统。 定子具有磁通产生部分,其磁极定位在与可转动部件相同的支撑部件的一侧。 可旋转构件包括圆柱形磁通产生和导电元件,其包括铁磁环和通过基本上圆柱形的气隙与定子的极间隔开的环形永磁体。 此外,圆柱形磁通产生导电元件的外径大于存储盘的中心开口的直径。

    Brushless DC drive motor with external rotor for use in disc drives and
like devices
    2.
    发明授权
    Brushless DC drive motor with external rotor for use in disc drives and like devices 失效
    带外部转子的无刷直流驱动电机用于磁盘驱动器和类似设备

    公开(公告)号:US5652470A

    公开(公告)日:1997-07-29

    申请号:US460128

    申请日:1995-06-02

    CPC classification number: H02K21/22 H02K29/08 H02K3/28

    Abstract: A brushless DC drive motor with an external rotor has three pole shoes on a substantially ring-shaped stator for each two poles on the rotor. The stator winding is commutated by a three-phase commutation network in such a fashion that first, second and third networks in the stator winding are cyclically connected to an external DC source in accordance with rotor position. Each of the networks comprises at least one stator coil wrapped around a neck of a single corresponding one of the pole shoes.

    Abstract translation: 具有外部转子的无刷直流驱动电动机在转子上的每两个磁极的基本环形的定子上具有三极靴。 定子绕组由三相换向网络换向,使得定子绕组中的第一,第二和第三网络根据转子位置循环地连接到外部DC源。 每个网络包括缠绕在单个对应的一个极靴的颈部上的至少一个定子线圈。

    Disk storage device having a brushless DC drive motor
    3.
    发明授权
    Disk storage device having a brushless DC drive motor 失效
    具有无刷直流驱动电动机的磁盘存储装置

    公开(公告)号:US5446610A

    公开(公告)日:1995-08-29

    申请号:US47308

    申请日:1993-04-19

    Abstract: A disk storage device having a clean chamber for a storage disk having a central opening is provided with a brushless drive motor. The drive motor includes a stator and a winding on the stator and further includes a shaft aligned with the rotation axis of said motor, and a magnetically conducting member supported for rotation about the rotation axis and having an inner wall coaxially surrounding the stator. A magnet fixed to the inner wall of the magnetically conducting member is radially spaced from the stator. The disk storage device further includes a hub positioned within the clean chamber and contiguous with the magnetically conducting member so that the hub and the magnetically conducting member together form an outer rotor of the drive motor. The outer rotor has a radially extending flange having a surface which supports said storage disk. A support member contiguous with a portion of a partition of the clean chamber supports the shaft and has a recess receiving a portion of said radially extending flange, whereby the spacing between opposing walls of the clean chamber is reduced. Further, the magnet is spaced from the stator by a substantially cylindrical air gap having a diameter greater than the diameter of the central opening of the storage disk.

    Abstract translation: 具有用于具有中心开口的存储盘的清洁室的盘存储装置设置有无刷驱动电动机。 驱动电动机包括定子和定子上的绕组,并且还包括与所述电动机的旋转轴线对齐的轴和用于围绕旋转轴线旋转并且具有同轴地围绕定子的内壁的导磁构件。 固定在导磁部件的内壁上的磁体与定子径向间隔开。 磁盘存储装置还包括定位在清洁室内并与导磁部件邻接的毂,使得毂和导磁部件一起形成驱动电动机的外转子。 外转子具有径向延伸的凸缘,其具有支撑所述存储盘的表面。 与清洁室的隔板的一部分邻接的支撑构件支撑轴并且具有容纳所述径向延伸的凸缘的一部分的凹部,由此清洁室的相对壁之间的间隔减小。 此外,磁体通过具有大于存储盘的中心开口的直径的直径的大致圆柱形的气隙与定子间隔开。

    Apparatus and method for controlling brushless electric motors and
position encoders and indicating position thereof
    4.
    发明授权
    Apparatus and method for controlling brushless electric motors and position encoders and indicating position thereof 失效
    用于控制无刷电动机和位置编码器并指示其位置的装置和方法

    公开(公告)号:US5280222A

    公开(公告)日:1994-01-18

    申请号:US777283

    申请日:1991-11-29

    CPC classification number: H02P6/22 H02P25/089 H02P6/006 H02P6/18 H02P6/185

    Abstract: A brushless direct current motor is energized by a power stage. Switches of the power stage are selectively switched by an electronic control device. In order to determine the correct commutation pattern, without using rotor position indicators such as Hall effect devices, the control device is arranged to sample the power fed to the motor. The samples, each responsive to a test signal or normal energization pulses received by the motor, in a ordered sequence define an analogue function whose parameters can be determined by mathematical analysis. The analysis applied to the samples derives the necessary commutation information and the energization signals in a rapid manner by employing a vector or complex number addition based on functions dependent on variable inductance in the operation of the motor.

    Abstract translation: 位置传感器或电动机也可以用作位置传感器。 通过特殊的计算机控制的电子过程,无需附加的传感器即可进行电动机的换向。 通过使电流通过电机中的电感,然后评估通过这些电感的电流来确定位置。 本发明允许快速,精确地确定电机的位置以及成本效益可靠的换向。

    Linear motor
    9.
    发明授权
    Linear motor 失效
    直线电机

    公开(公告)号:US4344022A

    公开(公告)日:1982-08-10

    申请号:US133122

    申请日:1980-03-24

    CPC classification number: H02K41/035

    Abstract: A linear motor unit includes a stator having on outer flux-carrying structure and an inner flux-carrying structure, and an armature arranged for travel along the length of the inner flux-carrying structure. The inner flux-carrying structure comprises an elongated rod. The armature slidably positioned along these rods carries a number of coils spaced one from another in the direction of elongation of the rod and surrounding the rod. A plurality of sets of permanent magnets are concentrically positioned within the outer flux-carrying structure which is arranged in a form of two tubular elongated members. The permanent magnets in each set are radially positioned with respect to the rods and located one opposite to another. Preferably successive ones of the sets of magnets have an alternate polarity. The coils are energized periodically and in a cyclical sequence to provide a motive force for the movement of armature along the parallel rods.

    Abstract translation: 线性电动机单元包括具有外磁通承载结构和内部助焊剂结构的定子,以及布置成沿着内部助焊剂结构的长度行进的电枢。 内部助焊剂结构包括细长杆。 沿着这些杆可滑动地定位的电枢在杆的伸长方向上围绕着杆而携带多个彼此间隔开的线圈。 多组永磁体被同心地定位在外部助焊剂结构内,其以两个管状细长构件的形式布置。 每组中的永磁体相对于杆径向定位,并且与另一组相对放置。 优选地,这组磁体中的连续的一组具有交替的极性。 线圈周期性地以循环的顺序被激励,以提供用于衔铁沿着平行杆运动的动力。

    Electromotive drive system for use with a pump of a power-assisted steering system in a motor vehicle
    10.
    发明授权
    Electromotive drive system for use with a pump of a power-assisted steering system in a motor vehicle 有权
    用于机动车辆中的动力辅助转向系统的泵的电动驱动系统

    公开(公告)号:US07015605B1

    公开(公告)日:2006-03-21

    申请号:US09831287

    申请日:1999-10-29

    CPC classification number: H02K1/187 H02K5/225 H02K7/14 H02K11/33 H02K2211/03

    Abstract: An electromotive drive is provided, especially for the pump of a power-assisted steering system of a motor vehicle. The drive includes a housing (3) with a bearing journal (15) in which the shaft (18) of a rotor (9) is rotationally mounted. The drive also includes a stator (7) having drive windings. The bearing journal (15) extends through said stator and supports it. The stator (7) is supported by the bearing journal (15), substantially in the transversal direction only. The stator (7) is coupled with the remaining housing (3) in a rotationally fixed manner, so as to transmit the engine torque. The arrangement dramatically reduces disturbing noises which occur especially when the motor is operated at full load and which are caused by relatively high-frequency torque variations.

    Abstract translation: 提供电动驱动器,特别是用于机动车辆的动力辅助转向系统的泵。 驱动器包括具有轴承轴颈(15)的壳体(3),旋转地安装转子(9)的轴(18)。 驱动器还包括具有驱动绕组的定子(7)。 轴承轴颈(15)延伸穿过所述定子并支撑其。 定子(7)基本上仅在横向方向上由轴承颈部(15)支撑。 定子(7)以旋转固定的方式与剩余壳体(3)联接,以便传递发动机转矩。 该装置显着地减少了特别是当电动机在满载下操作并且由相对高频转矩变化引起的干扰噪声。

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