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44 条记录 (耗时 0.015 秒)

    Driver and method for control of voice coil motor in disk drive
    1.
    发明授权
    Driver and method for control of voice coil motor in disk drive 有权
    用于控制磁盘驱动器中的音圈电机的驱动器和方法

    公开(公告)号：US07327103B1

    公开(公告)日：2008-02-05

    申请号：US09943705

    申请日：2001-08-31

    申请人： Ashraf El-Sadi

    发明人： Ashraf El-Sadi

    IPC分类号： H02P1/34

    CPC分类号： G11B5/59605 ,  G11B5/5526 ,  G11B21/12 ,  H02P25/034

    摘要： A driver for a voice coil motor in a disk drive includes a sensor that provides a sense current by sensing a coil current in the voice coil motor, a comparator that provides an error current by determining a difference between a command current and the sense current, an integrator that provides an integrated error current by integrating the error current, and an amplifier that provides the coil current by amplifying the integrated error current.

    摘要翻译： 用于磁盘驱动器中的音圈电动机的驱动器包括通过感测音圈电动机中的线圈电流来提供感测电流的传感器，通过确定指令电流和感测电流之间的差异来提供误差电流的比较器， 通过积分误差电流提供积分误差电流的积分器，以及通过放大积分误差电流来提供线圈电流的放大器。

    Position-measuring device and method for position measuring
    4.
    发明授权
    Position-measuring device and method for position measuring 有权
    位置测量装置及位置测量方法

    公开(公告)号：US07787970B2

    公开(公告)日：2010-08-31

    申请号：US11180014

    申请日：2005-07-11

    申请人： Erich Strasser ,  Elmar Mayer

    发明人： Erich Strasser ,  Elmar Mayer

    IPC分类号： G05B19/18 ,  G01C9/00 ,  G05B19/10 ,  G05B19/31 ,  H02P6/00 ,  H02P1/34 ,  G01C21/00 ,  G01D21/00

    CPC分类号： H03M1/108 ,  G01D5/24461 ,  G01D18/00 ,  H03M1/22

    摘要： A position-measuring device having integrated function testing includes a position-recording unit, a processing unit, and a control-word generator. In a positional-data request, a positional-data word is first generated in the position-recording unit and output to the processing unit. There, the position data word is processed into a position value. Subsequently, a control-data word is generated in the position-recording unit according to the specification of the control-word generator and output to the processing unit. The processing unit processes the control-data word into a control value which has a defined mathematical relationship to the position value.

    摘要翻译： 具有集成功能测试的位置测量装置包括位置记录单元，处理单元和控制字发生器。 在位置数据请求中，首先在位置记录单元中生成位置数据字，并输出到处理单元。 在那里，位置数据字被处理成位置值。 随后，根据控制字发生器的指定，在位置记录单元中产生控制数据字，并输出到处理单元。 处理单元将控制数据字处理成与位置值具有定义的数学关系的控制值。

    Speed control circuit for a dc brushless motor
    5.
    发明授权
    Speed control circuit for a dc brushless motor 失效
    直流无刷电机调速电路

    公开(公告)号：US06922038B2

    公开(公告)日：2005-07-26

    申请号：US10856954

    申请日：2004-06-01

    申请人： Alex Horng ,  Ying-Ya Lu ,  Ta-Lun Ko

    发明人： Alex Horng ,  Ying-Ya Lu ,  Ta-Lun Ko

    IPC分类号： H02P4/00 ,  H02P6/00 ,  H02P6/08 ,  H02P1/34 ,  H02P1/42 ,  H02P5/28 ,  H02P7/36 ,  H02P2/18

    CPC分类号： H02P4/00 ,  H02P6/08 ,  H02P6/26

    摘要： A speed control circuit for a dc brushless motor includes a switch circuit and a voltage-detection circuit. The voltage-detection circuit is actuated depending upon high or low voltage of power supply to thereby cause the switch circuit to output high or low operating voltage to a driver circuit of the motor in response to changes of the voltage of the power supply. The motor is adjusted and operated at desired speeds by a rated range of input voltages according to the high or low operating voltage.

    摘要翻译： 用于直流无刷电动机的速度控制电路包括开关电路和电压检测电路。 电压检测电路根据电源的高电压或低电压被致动，从而使开关电路响应于电源电压的变化而将高或低的工作电压输出到电动机的驱动电路。 根据高或低的工作电压，电机按照额定输入电压范围进行调节和运行。

    Electronic-magnetic current isolator circuit
    6.
    发明授权
    Electronic-magnetic current isolator circuit 失效
    电磁隔离电路

    公开(公告)号：US4347469A

    公开(公告)日：1982-08-31

    申请号：US66590

    申请日：1979-08-14

    申请人： Edward H. Dinger

    发明人： Edward H. Dinger

    IPC分类号： H02P7/06 ,  G01R15/18 ,  G01R17/06 ,  G01R19/20 ,  H02M7/21 ,  H02P1/34

    CPC分类号： G01R17/06 ,  G01R15/185 ,  G01R19/20

    摘要： A circuit provides an electrical output signal proportional to but electrically isolated from a current flowing in a power circuit, and more particularly, to the current supplied to the field or armature winding of a DC motor load which receives power from a rectifier circuit coupled to an AC power source. The circuit includes a transformer including at least two windings, a primary and a secondary, wound on a saturable core. The primary winding is coupled to the power circuit, whereas the secondary winding is coupled to an output circuit along with control circuit means which are adapted to keep the core out of saturation in response to a power current flowing in the primary winding which by itself is adapted to drive the core into saturation. Accordingly, the time the core is not in saturation an output current flows in the secondary winding, which is related to the primary current by the turns ratio of the transformer.

    摘要翻译： 电路提供与在电力电路中流动的电流成比例但与电流隔离的电输出信号，更具体地说，提供给直流电动机负载的励磁或电枢绕组的电流，该直流电动机负载从耦合到 交流电源。 电路包括变压器，其包括至少两个缠绕在可饱和芯上的绕组，初级和次级绕组。 初级绕组耦合到电源电路，而次级绕组连同控制电路装置耦合到输出电路，控制电路装置适于响应于在初级绕组中流动的功率电流而使芯失去饱和度，其本身是 适合驱动核心饱和。 因此，核心不饱和的时间，输出电流在次级绕组中流动，这与变压器的匝数比与初级电流有关。

    Drive system for a ball mill and method for operating a ball mill
    10.
    发明授权
    Drive system for a ball mill and method for operating a ball mill 有权
    用于球磨机的驱动系统和用于操作球磨机的方法

    公开(公告)号：US09522400B2

    公开(公告)日：2016-12-20

    申请号：US14000127

    申请日：2012-02-07

    申请人： Maarten Holland

    发明人： Maarten Holland

    IPC分类号： B02C25/00 ,  B02C17/24 ,  B02C17/18 ,  H02P1/34 ,  H02P25/24

    CPC分类号： B02C17/24 ,  B02C17/1805 ,  B02C25/00 ,  H02P1/34 ,  H02P25/24

    摘要： A drive system for a ball mill includes a motor with a slip-ring rotor. The motor is assigned a family of characteristics relating the torque of the motor to a further characteristic variable. The family of characteristics has at least two different characteristics, and it includes a switching element that switches over the drive system abruptly between the two characteristics when there is a constant value of the characteristic variable. In a method for operating a ball mill with a drive system, a drum of the ball mill is moved out of a state of rest when the first characteristic is activated. In the event of caking in the drum of the ball mill, the drum is moved until the caking is in an inclined position. Actuation of the switching element brings about switching over to the second characteristic.

    摘要翻译： 用于球磨机的驱动系统包括具有滑环转子的马达。 电动机分配了一系列特性，将电动机的转矩与另一个特性变量相关联。 特征族具有至少两个不同的特性，并且包括当存在特征变量的恒定值时在两个特性之间突然切换驱动系统的开关元件。 在用驱动系统操作球磨机的方法中，当第一特征被激活时，球磨机的滚筒被移出静止状态。 在结块在球磨机的滚筒的情况下，滚筒被移动直到结块处于倾斜位置。 开关元件的驱动导致切换到第二特性。