Variable speed hydraulic pump
    1.
    发明授权
    Variable speed hydraulic pump 有权
    变速液压泵

    公开(公告)号:US06863502B2

    公开(公告)日:2005-03-08

    申请号:US10257302

    申请日:2001-04-13

    摘要: The invention provides a variable speed hydraulic pump designed to operate at a maximum horsepower throughout its pressure range by adjusting motor speed according to motor load parameters. In particular, the variable speed hydraulic pump includes a hydraulic pump unit coupled to a variable speed electric motor by a drive unit and to a hydraulic fluid tank for pressurizing and pumping hydraulic fluid when operated by the motor. A motor controller is electrically connected to the motor to supply drive signals to the motor based on electrical characteristics of the drive signals which are dependent on the load exerted on the motor. Suction from the load is provided by both the main pump and a bidirectional supercharging pump by reversing the direction of the motor and shifting a 4/3 valve to connect the main pump inlet to the load and its outlet to tank. In addition, the controller reduces the motor speed at the maximum rated pressure to just maintain the pressure, to reduce the amount of fluid pumped through the maximum pressure relief valve.

    摘要翻译: 本发明提供了一种变速液压泵,其设计为通过根据电动机负载参数调整电动机速度在其整个压力范围内以最大功率运行。 特别地,变速液压泵包括通过驱动单元连接到变速电动机的液压泵单元和用于在由电动机操作时对液压流体进行加压和泵送的液压油箱。 电动机控制器电连接到电动机,以基于驱动信号的电特性向电动机提供驱动信号,驱动信号取决于施加在电动机上的负载。 从主泵和双向增压泵通过反转电机的方向和移动4/3阀将主泵入口连接到负载及其出口到罐而由负载提供吸力。 此外,控制器将电机速度降低到最大额定压力,以保持压力,以减少通过最大压力释放阀泵送的液体量。

    Magnetic drive pump assembly with integrated motor
    2.
    发明授权
    Magnetic drive pump assembly with integrated motor 有权
    带集成电机的磁力驱动泵组件

    公开(公告)号:US08979504B2

    公开(公告)日:2015-03-17

    申请号:US12859742

    申请日:2010-08-19

    摘要: Embodiments of the invention provide a pump assembly and a method for assembly the pump assembly. The pump assembly includes a stator assembly, a lower pump housing, an upper pump housing, a rotor assembly, and an isolation cup. The method includes coupling the stator assembly to the lower pump housing, overmolding an overmold material over the stator assembly and the lower pump housing, positioning the isolation cup over the overmold, and positioning the rotor assembly inside the isolation cup. The method further includes placing the upper pump housing over the rotor assembly and coupling the upper pump housing to the lower pump housing.

    摘要翻译: 本发明的实施例提供了一种泵组件和用于组装泵组件的方法。 泵组件包括定子组件,下泵壳体,上泵壳体,转子组件和隔离杯。 该方法包括将定子组件耦合到下泵壳体,将覆盖模制材料包覆模制在定子组件和下泵壳体上,将隔离杯定位在包覆模制上,以及将转子组件定位在隔离杯内。 该方法还包括将上泵壳体放置在转子组件上方并将上泵壳体联接到下泵壳体。

    Closed loop control of motor position and velocity
    3.
    发明授权
    Closed loop control of motor position and velocity 有权
    电机位置和速度闭环控制

    公开(公告)号:US06525502B1

    公开(公告)日:2003-02-25

    申请号:US09806622

    申请日:2001-03-26

    IPC分类号: G05B1931

    CPC分类号: H03M1/485

    摘要: A digital signal processor for closed loop velocity or position control receives sine winding output signals and cosine winding output signal from a resolver, digitizes the signals and outputs quadrature encoded signals to an excitation circuit. The excitation circuit is connected to an excitation winding in the resolver to provide signals for driving the resolver.

    摘要翻译: 用于闭环速度或位置控制的数字信号处理器从解算器接收正弦绕组输出信号和余弦线圈输出信号,数字化信号并将正交编码信号输出到激励电路。 励磁电路连接到旋转变压器中的励磁绕组,以提供用于驱动旋转变压器的信号。

    Low cost redundant resolver system
    4.
    发明授权
    Low cost redundant resolver system 失效
    低成本冗余旋转变压器系统

    公开(公告)号:US06472841B1

    公开(公告)日:2002-10-29

    申请号:US09806624

    申请日:2001-03-29

    IPC分类号: G05B106

    CPC分类号: H02K24/00 G08C19/40

    摘要: A resolver (20, 21) is provided with redundant excitation windings in which only a single excitation winding (E1) is energized externally. Cross coupling from the externally energized winding (E1) excites the other excitation winding (E2). A control circuit (27, 28) monitors the excitation of the redundant excitation winding (E2) and switches the excitation to the redundant excitation winding (E2) in the event of a failure of the externally winding (E1).

    摘要翻译: 旋转变压器(20,21)具有冗余的励磁绕组,其中只有一个励磁绕组(E1)被外部通电。 来自外部通电的绕组(E1)的交叉耦合激励另一个励磁绕组(E2)。 在外部绕组(E1)发生故障的情况下,控制电路(27,28)监视冗余激励绕组(E2)的激励并将激励切换到冗余激励绕组(E2)。

    Direct drive inside-out brushless roller motor
    5.
    发明授权
    Direct drive inside-out brushless roller motor 有权
    直接驱动内置无刷电机

    公开(公告)号:US06710505B1

    公开(公告)日:2004-03-23

    申请号:US09700447

    申请日:2001-02-06

    IPC分类号: H02K110

    摘要: A brushless d.c. motor is integrated with a conveyor roller (14) by placing a plurality of stator coils (15) on a stationary shaft (18) and securing a rotor (10) with segments (12) of permanent magnetic material to the inside of the conveyor roller (14). In one embodiment the rotor (10) is directly secured to the roller while in a second embodiment, the rotor (10) is disposed inside of a cylindrical metal housing (40) that is press fit inside of the roller. Commutation is provided by an external motor controller (54) which is connected by conductors (37) through a passageway (36) in the shaft (18) to a circuit board (20), where sensors (23) are mounted to sense rotor position for purposes of commutation of the stator coils (15).

    摘要翻译: 无刷直流 电动机通过将多个定子线圈(15)放置在固定轴(18)上并将具有永久磁性材料段(12)的转子(10)固定到输送辊的内部而与传送辊(14)集成 (14)。 在一个实施例中,转子(10)直接固定到辊上,而在第二实施例中,转子(10)设置在压配合在辊内部的圆柱形金属壳体(40)的内部。 换向由外部马达控制器(54)提供,外部马达控制器(54)通过导体(37)通过轴(18)中的通道(36)连接到电路板(20),传感器(23)安装成感测转子位置 用于定子线圈(15)的换向。

    Magnetic Drive Pump Assembly with Integrated Motor
    6.
    发明申请
    Magnetic Drive Pump Assembly with Integrated Motor 有权
    带集成电机的磁力驱动泵组件

    公开(公告)号:US20110171048A1

    公开(公告)日:2011-07-14

    申请号:US12859742

    申请日:2010-08-19

    IPC分类号: F04B35/04 B23P15/00

    摘要: Embodiments of the invention provide a pump assembly and a method for assembly the pump assembly. The pump assembly includes a stator assembly, a lower pump housing, an upper pump housing, a rotor assembly, and an isolation cup. The method includes coupling the stator assembly to the lower pump housing, overmolding an overmold material over the stator assembly and the lower pump housing, positioning the isolation cup over the overmold, and positioning the rotor assembly inside the isolation cup. The method further includes placing the upper pump housing over the rotor assembly and coupling the upper pump housing to the lower pump housing.

    摘要翻译: 本发明的实施例提供了一种泵组件和用于组装泵组件的方法。 泵组件包括定子组件,下泵壳体,上泵壳体,转子组件和隔离杯。 该方法包括将定子组件耦合到下泵壳体,将覆盖模制材料包覆模制在定子组件和下泵壳体上,将隔离杯定位在包覆模制上,以及将转子组件定位在隔离杯内。 该方法还包括将上泵壳体放置在转子组件上方并将上泵壳体联接到下泵壳体。

    Pressure control system using input current sensing
    7.
    发明授权
    Pressure control system using input current sensing 有权
    压力控制系统采用输入电流检测

    公开(公告)号:US06577089B1

    公开(公告)日:2003-06-10

    申请号:US09806364

    申请日:2001-09-21

    IPC分类号: H02P700

    摘要: A method and apparatus for controlling the output function of a permanent magnet brushless DC motor (20), by sensing an input current to the motor (20), by computing an output torque generated by the motor (20) as a function of the input current to the motor (20), by computing an output pressure for a pump (22) in response to the output torque, by reading a set point pressure, and by comparing the set point pressure to the output pressure, and in response thereto controlling on-off operation of the motor (20). The apparatus includes a sensing circuit (28) and a microelectronic processor (30) for performing these functions.

    摘要翻译: 一种方法和装置,用于通过根据所述输入来计算由所述电动机(20)产生的输出转矩,通过感测到所述电动机(20)的输入电流来控制永磁无刷直流电动机(20)的输出功能 通过读取设定点压力,并通过将设定点压力与输出压力进行比较来计算泵(22)的输出压力,并且响应于控制 马达(20)的开 - 关操作。 该装置包括用于执行这些功能的感测电路(28)和微电子处理器(30)。