Magnetizing device having variable charge storage network and voltage
control
    1.
    发明授权
    Magnetizing device having variable charge storage network and voltage control 失效
    具有可变电荷存储网络和电压控制的励磁装置

    公开(公告)号:US5469321A

    公开(公告)日:1995-11-21

    申请号:US975790

    申请日:1992-11-13

    CPC classification number: H01F13/003

    Abstract: A magnetizing device for generating a high current magnetizing pulse includes a plurality of charge storage devices and a source of current connected by selector switches for charging selected ones of the charge storage devices to a predetermined voltage level. When the selected charge storage devices are charged the selector switches are opened and the selected charge storage devices are discharged through diode circuits coupled to a common SCR. In this way the current pulse does not flow through the selector switches. A peak current meter using a current transformer provides a display of the peak current of the magnetizing pulse.

    Abstract translation: 用于产生高电流磁化脉冲的磁化装置包括多个电荷存储装置和通过选择开关连接的电流源,用于将选定的电荷存储装置充电至预定的电压电平。 当所选择的电荷存储装置被充电时,选择器开关被打开,并且所选择的电荷存储装置通过耦合到公共SCR的二极管电路放电。 以这种方式,电流脉冲不会流过选择开关。 使用电流互感器的峰值电流表提供了磁化脉冲的峰值电流的显示。

    Method and system for driving a magnetizing fixture
    3.
    发明授权
    Method and system for driving a magnetizing fixture 失效
    用于驱动磁化夹具的方法和系统

    公开(公告)号:US06542348B1

    公开(公告)日:2003-04-01

    申请号:US09404922

    申请日:1999-09-24

    CPC classification number: H01F13/003

    Abstract: A method and system for driving a magnetizing fixture. A driving circuit produces in the conductor of a magnetizing fixture a first current whose magnitude increases substantially linearly with time, then produces a substantially constant current in the same direction, then produces a current in the same direction whose magnitude decreases substantially linearly with time, thereby forming a substantially trapezoidal magnetization current waveform having symmetrical sides. The circuit comprises a first energy storage device for supplying electrical energy to the magnetizing fixture, a second energy storage device for receiving electrical energy from the magnetizing fixture, and a commutator interconnecting the first energy storage device, the second energy storage device and the magnetizing fixture for stopping the flow of electrical energy into the magnetizing fixture from the first energy storage device and starting the flow of energy from the magnetizing fixture into the second energy storage device.

    Abstract translation: 一种用于驱动磁化装置的方法和系统。 驱动电路在磁化固定器的导体中产生其幅度随时间基本线性增加的第一电流,然后在相同方向上产生基本上恒定的电流,然后产生大小随时间基本线性减小的相同方向的电流,由此 形成具有对称侧面的大致梯形的磁化电流波形。 该电路包括用于向磁化装置提供电能的第一能量存储装置,用于接收来自磁化固定装置的电能的第二能量存储装置,以及将第一能量存储装置,第二能量存储装置和磁化装置互连的换向器 用于停止来自第一能量存储装置的电能流入磁化固定装置,并且启动从磁化装置进入第二储能装置的能量流。

    Coil and method for magnetizing an article
    4.
    发明授权
    Coil and method for magnetizing an article 失效
    用于磁化物品的线圈和方法

    公开(公告)号:US6163241A

    公开(公告)日:2000-12-19

    申请号:US387279

    申请日:1999-08-31

    CPC classification number: H01F13/003 H01F27/10 Y10S505/892

    Abstract: A coil for magnetizing an article. The coil includes a cooling coil component and an electric coil component. An elongate electric coil component is placed with its center along a bobbin, wherein one end is wound in one direction around the bobbin and the other end in the other direction. The cooling coil component includes a disk-like member in which a passage is formed for carrying a fluid coolant. The disk-like member is "C" shaped to substantially prevent the flow of eddy currents. Electric coil components disposed at the ends of the coil are provided with a greater number of windings to make the magnetic field in the coil more uniform.

    Abstract translation: 用于磁化物品的线圈。 线圈包括冷却线圈部件和电线圈部件。 细长的电线圈部件以其中心沿着线轴放置,其中一端围绕线轴缠绕在一个方向上,另一端沿另一方向缠绕。 冷却盘管部件包括盘形部件,其中形成有用于承载流体冷却剂的通道。 圆盘状构件是“C”形的,以基本上防止涡流的流动。 设置在线圈端部的电线圈部件设置有更多数量的绕组,以使线圈中的磁场更均匀。

    Total magnetic flux measuring device
    5.
    发明授权
    Total magnetic flux measuring device 失效
    总磁通量测量装置

    公开(公告)号:US06239596B1

    公开(公告)日:2001-05-29

    申请号:US08871397

    申请日:1997-06-09

    CPC classification number: G01R33/028

    Abstract: A magnetic flux measuring device includes a coil of conductive material for sensing magnetic flux and producing a voltage in the presence of a changing magnetic field. An analog to digital converter is coupled to an output of the sensing coil for sampling the voltage produced by the magnetic flux sensing coil and for converting that voltage to digital data. A digital integrating device determines the total magnetic flux sensed by the coil over an event time interval by integrating the digital data over that same time interval.

    Abstract translation: 磁通测量装置包括用于感测磁通量并在存在变化的磁场的情况下产生电压的导电材料的线圈。 模数转换器耦合到感测线圈的输出,用于对由磁通量感测线圈产生的电压进行采样并将该电压转换成数字数据。 数字积分装置通过在同一时间间隔内对数字数据进行积分来确定线圈在事件时间间隔内感测的总磁通量。

    Integral electronically commutated drive system
    6.
    发明授权
    Integral electronically commutated drive system 失效
    整体电子换向驱动系统

    公开(公告)号:US5197865A

    公开(公告)日:1993-03-30

    申请号:US832041

    申请日:1992-02-06

    CPC classification number: H02K29/08 F04C15/008 H02K5/128

    Abstract: A pump assembly includes a pump head that is coupled to a permanent magnet rotor. The rotor is enclosed in a cavity defined by a fluid-tight cup that has an open first end and a closed second end. This cavity is in fluid connection with the pump head through its open first end. Outside the cup enclosure are disposed a plurality of electrical stator windings. A housing encloses all of the foregoing elements, and may also enclose a circuit board that includes circuitry for driving the stator windings. The pump assembly thereby provided is compact, efficient, and reliable.

    Abstract translation: 泵组件包括耦合到永磁转子的泵头。 转子被封闭在由具有开放的第一端和闭合的第二端的流体密封杯限定的空腔中。 该腔通过其开放的第一端与泵头流体连接。 在外壳外部设置有多个电定子绕组。 壳体包围所有前述元件,并且还可以包围电路板,该电路板包括用于驱动定子绕组的电路。 由此提供的泵组件是紧凑,高效和可靠的。

    Magnetic tachometer or accelerometer having highly permeable eddy
current flux circuit
    7.
    发明授权
    Magnetic tachometer or accelerometer having highly permeable eddy current flux circuit 失效
    具有高渗透性涡流通量电路的磁性转速计或加速度计

    公开(公告)号:US4751459A

    公开(公告)日:1988-06-14

    申请号:US909762

    申请日:1986-09-18

    CPC classification number: G01P3/49 G01P15/003

    Abstract: A tachometer or accelerometer features a nonmagnetic, electrically-conductive, moving member whose velocity or rate of change of velocity is to be measured. A magnetic field is generated in a direction generally perpendicular to the direction of motion, creating eddy currents in the moving member which, in turn, create an eddy current magnetic field. The flux density of the eddy current field is measured by a Hall effect sensor to produce a signal representative of velocity or, alternatively, the rate of change of flux density of the eddy current field is measured by a coil producing a signal representative of the rate of change of velocity. A separate magnetic circuit for the Hall effect sensor or coil sensor, as the case may be, is provided so as to maximize the strength of the eddy current field by concentrating the sensed eddy current flux and thereby maximizing the device's sensitivity and accuracy while minimizing its susceptibility to error through interference.

    Abstract translation: 转速计或加速度计具有非磁性,导电的移动部件,其速度或速度变化速率要测量。 在大致垂直于运动方向的方向上产生磁场,从而在移动部件中产生涡流,从而产生涡流磁场。 通过霍尔效应传感器测量涡流场的磁通密度,以产生代表速度的信号,或者涡旋电流场的磁通密度变化率由产生代表速率的信号的线圈测量 的速度变化。 提供用于霍尔效应传感器或线圈传感器的单独的磁路(视情况而定),以便通过集中所感测的涡流通量来最大化涡流场的强度,从而使器件的灵敏度和精度最大化,同时使其最小化 通过干扰对误差的敏感性。

    Variable reluctance actuators having improved constant force control and
position-sensing features
    8.
    发明授权
    Variable reluctance actuators having improved constant force control and position-sensing features 失效
    具有改进的恒力控制和位置感测特征的可变磁阻致动器

    公开(公告)号:US4656400A

    公开(公告)日:1987-04-07

    申请号:US752956

    申请日:1985-07-08

    CPC classification number: H01F7/18

    Abstract: A variable reluctance actuator, of either the linear or rotary type, having a moving element operated by a solenoid, is controlled by a Hall effect sensor signal representative of flux density in the magnetic circuit of the actuator. The actuator may be operated in either a constant-force control mode, or a position-sensing or control mode. Substantially constant force, independent of position of the actuator's movable element, is obtained by varying, rather than stabilizing, the sensed magnetic field during movement. Position sensing, independent of actuator force, is obtained by variably controlling the magnitude of the excitation current of the Hall effect sensor in response to the magnitude of the coil current and Hall sensor output.

    Abstract translation: 具有由螺线管操作的移动元件的线性或旋转类型的可变磁阻致动器由表示致动器的磁路中的磁通密度的霍尔效应传感器信号控制。 致动器可以在恒力控制模式或位置感测或控制模式中操作。 通过在运动期间改变而不是稳定感测的磁场来获得与致动器的可移动元件的位置无关的基本恒定的力。 通过响应于线圈电流和霍尔传感器输出的大小可变地控制霍尔效应传感器的激励电流的大小来获得与致动器力无关的位置感测。

    Variably-controlled vibratory conveyor
    9.
    发明授权
    Variably-controlled vibratory conveyor 失效
    可变控制振动输送机

    公开(公告)号:US5409101A

    公开(公告)日:1995-04-25

    申请号:US192276

    申请日:1994-02-03

    CPC classification number: B65G27/32 H02K33/16

    Abstract: An elongate vibratory conveyor for moving products is reciprocated by driving a motor with a cyclical nonuniform motion by supplying power nonuniformly to the motor. The conveyor is reciprocated in opposite lengthwise directions, without any substantial movement of the conveyor normal to the lengthwise direction. Motor control circuitry variably drives the motor automatically in response to feedback from a sensor which senses a motion related to the conveyor motion. The feedback signal is compared to a selected one of a set of predetermined different motion patterns, and the motor is driven by supplying power nonuniformly thereto in accordance with the selected motion pattern. The conveyor system readily enables instantaneous reversibility of the product flow at the same average velocity, and instantaneous variable control for modifying the motion of the conveyor to obtain either different desired average product velocities or the same average product velocity at different conveyor inclinations or reciprocating frequencies, all irrespective of changes in conveyor loading or resistance to slip of the products conveyed. Separate motors driving either the same conveyor or separate conveyors are driven with cyclical nonuniform motions in synchronization by synchronizing their respective power supplies.

    Abstract translation: 用于移动产品的细长振动输送机通过不均匀地向马达供电而驱动具有周期性不均匀运动的马达而往复运动。 输送机在相反的长度方向上往复运动,而输送机垂直于长度方向没有任何实质的运动。 电动机控制电路根据来自传感器的反馈自动地驱动电动机,该传感器检测与输送机运动相关的运动。 将反馈信号与一组预定的不同运动模式中的所选择的一个进行比较,并且通过根据所选择的运动模式不均匀地向其提供电力来驱动电动机。 输送机系统能够以相同的平均速度实现产品流动的瞬时可逆性,以及瞬时可变控制,用于改变输送机的运动以获得不同的期望平均产品速度或在不同输送机倾斜或往复频率下的相同的平均产品速度, 所有这些都不管传送带的变化和传送的产品的滑动阻力。 驱动同一输送机或单独输送机的独立电机通过同步其各自的电源同步地以循环不均匀运动来驱动。

    Disk drive spindle motor
    10.
    发明授权
    Disk drive spindle motor 失效
    磁盘驱动主轴电机

    公开(公告)号:US5373407A

    公开(公告)日:1994-12-13

    申请号:US974986

    申请日:1992-11-12

    CPC classification number: G11B25/043 G11B33/1446

    Abstract: A small form factor disk drive having an extremely thin, high-energy product annular magnet within the spindle motor. The magnet includes twelve alternating poles disposed about the periphery and canted from the top edge to the bottom at a slight skew angle. The high-energy product magnet generates a high starting torque which obviates the use of low viscosity lithium bearing greases. A stator disposed concentrically within the magnet has three continuous coils, each coil wound around three spokes of the stator at 120 degree intervals, for a total of nine stator slots. The rotating spindle, bearings and stationary base are constructed of materials having similar coefficients of thermal expansion to reduce stresses on the bearings during periods of temperature elevation. An annular aluminum disk support sole bonds to a ledge on the spindle hub to facilitate machining and provide material compatibility. The disk drive includes various features for reducing the amount of contamination on the disk surface. A double groove bonding configuration eliminates adhesive runout and ensures a consistent bond strength.

    Abstract translation: 一种小型的磁盘驱动器,其在主轴电机内具有非常薄的,高能量的产品环形磁体。 该磁体包括设置在周边周围的十二个交替磁极,并以稍微偏斜的角度从顶部边缘到底部倾斜。 高能产品磁铁产生高起动转矩,避免使用低粘度锂轴承润滑脂。 定子同心地设置在磁体内,具有三个连续的线圈,每个线圈以120度的间隔缠绕在定子的三个辐条上,共有九个定子槽。 旋转主轴,轴承和固定底座由具有相似热膨胀系数的材料构成,以在温度升高期间减少轴承上的应力。 环形铝盘支撑鞋底与主轴毂上的凸缘结合,以便加工并提供材料兼容性。 磁盘驱动器包括用于减少磁盘表面上的污染物的各种特征。 双沟槽接合结构消除了粘合剂跳动并确保了一致的粘结强度。

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