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    System for controlling a power output
    21.
    发明申请
    System for controlling a power output 有权
    用于控制功率输出的系统

    公开(公告)号：US20070119161A1

    公开(公告)日：2007-05-31

    申请号：US11289701

    申请日：2005-11-30

    Applicant: Hongliu Du ,  Tony Marcott ,  Saurabh Pandey

    Inventor： Hongliu Du ,  Tony Marcott ,  Saurabh Pandey

    IPC: F16D31/02

    CPC classification number: F16H61/46 ,  F16H47/04 ,  F16H59/16 ,  F16H61/433 ,  F16H61/472 ,  F16H2059/683 ,  F16H2059/6861

    Abstract: A system for controlling a power output is disclosed. The system includes a hydraulic actuator configured to output a first torque and a source of pressurized fluid configured to supply a flow of pressurized fluid to the hydraulic actuator. The system further includes a controller configured to control the flow of pressurized fluid as a function of the first torque, a predetermined torque, and changes to the first torque caused by a load operatively connected to the hydraulic actuator.

    Abstract translation: 公开了一种用于控制功率输出的系统。 该系统包括液压致动器，该液压致动器被配置为输出第一扭矩和加压流体源，该加压流体源构造成将加压流体流供应到液压致动器。 该系统还包括控制器，该控制器被配置为根据第一扭矩，预定扭矩以及由可操作地连接到液压致动器的负载引起的第一转矩的变化来控制加压流体的流动。

    Sensor for a variable displacement pump
    23.
    发明授权
    Sensor for a variable displacement pump 有权
    变量泵的传感器

    公开(公告)号：US06848888B2

    公开(公告)日：2005-02-01

    申请号：US10317210

    申请日：2002-12-12

    Applicant: Hongliu Du ,  Mark P. Vonderwell

    Inventor： Hongliu Du ,  Mark P. Vonderwell

    IPC: F04B49/06 ,  F04B1/20 ,  F04B1/22 ,  F04B51/00 ,  F04B53/00 ,  F04B49/12

    CPC classification number: F04B1/2014 ,  F04B51/00 ,  F04B2201/12051

    Abstract: A sensor for a variable displacement pump is provided. The pump has a housing containing a swashplate that is adapted to rotate about an axis. The sensor includes a magnet connected to the swashplate to rotate with the swashplate. A semiconductor chip is disposed proximate the magnet and within the housing. A control is adapted to direct a current through the semiconductor chip and to determine the voltage across the semiconductor chip. The control is further adapted to determine the angle of the swashplate relative to the housing based on the determined voltage.

    Abstract translation: 提供了一种用于可变排量泵的传感器。 泵具有容纳旋转斜盘的壳体，该斜盘适于围绕轴线旋转。 传感器包括连接到斜盘以与斜盘一起旋转的磁体。 半导体芯片靠近磁体设置在壳体内。 控制器适于引导电流通过半导体芯片并确定半导体芯片两端的电压。 该控制还适于基于所确定的电压来确定斜盘相对于壳体的角度。

    Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump
    25.
    发明授权
    Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump 有权
    用于控制可变排量液压泵的排出压力的装置和方法

    公开(公告)号：US06374722B1

    公开(公告)日：2002-04-23

    申请号：US09697831

    申请日：2000-10-26

    Applicant: Hongliu Du ,  Noah D. Manring

    Inventor： Hongliu Du ,  Noah D. Manring

    IPC: F01B300

    CPC classification number: F04B1/324 ,  F04B49/002

    Abstract: An apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump. The apparatus and method includes a swashplate pivotally attached to the pump, a valve plate located on the pump to allow hydraulic fluid to enter the pump through an intake port on the valve plate, and to exit the pump through a discharge port on the valve plate, the hydraulic fluid entering and exiting the pump responsively creating a pressure carry over angle &ggr;, a control servo operable to control an angle of the swashplate relative to the pump, a servo valve having an output port hydraulically connected to the control servo and an input port hydraulically connected to the pump output port, and means for controlling the servo valve as a function of the discharge pressure of the pump and responsively balancing a torque induced by the pressure carry over angle &ggr; with a torque generated by a control pressure Pc at the control servo.

    Abstract translation: 一种用于控制可变排量液压泵的排出压力的装置和方法。 该装置和方法包括可枢转地附接到泵的斜盘，位于泵上的阀板，以允许液压流体通过阀板上的进气口进入泵，并通过阀板上的排出口离开泵 响应于进入和离开泵的液压流体响应于产生压力承载角γ，控制伺服可操作以控制斜盘相对于泵的角度;伺服阀，具有液压连接到控制伺服的输出端口和输入端 液压连接到泵输出端口的端口，以及用于根据泵的排出压力来控制伺服阀的装置，并且响应于将由压力承载角γ引起的转矩与由控制压力Pc产生的转矩平衡 控制伺服

    Electro-Hydraulic Control Design for Pump Discharge Pressure Control
    27.
    发明申请
    Electro-Hydraulic Control Design for Pump Discharge Pressure Control 审中-公开
    泵排放压力控制电液控制设计

    公开(公告)号：US20140060034A1

    公开(公告)日：2014-03-06

    申请号：US13599794

    申请日：2012-08-30

    Applicant: Hongliu Du

    Inventor： Hongliu Du

    IPC: F16D31/02

    CPC classification number: F02D29/04 ,  F01P7/044 ,  F04B35/04 ,  F16H61/431

    Abstract: An electro-hydraulic control system manages speed of a hydraulic fan by using a solenoid to bias a three position pool of a control valve coupled to a hydraulic pump driving the fan. In a first position, the spool releases pressure on a de-stroke actuator of the pump and allows an on-stroke actuator to increase output pressure corresponding to a speed of an engine driving the pump. In a second position, the spool isolates the de-stroke actuator and fixes the pressure output of the pump. In a third position, the spool couples the de-stroke actuator to the pump output and causes a reduction in the pressure output of the pump. The solenoid coupled to the spool sets the output pressure at which the spool is in the second position.

    Abstract translation: 电动液压控制系统通过使用螺线管来控制液压风扇的速度来对与驱动风扇的液压泵相连的控制阀的三位置池进行偏置。 在第一位置，阀芯释放泵的行程致动器上的压力，并允许行程致动器增加对应于驱动泵的发动机的速度的输出压力。 在第二位置，阀芯将去行程致动器隔离并固定泵的压力输出。 在第三位置，阀芯将去行程致动器联接到泵输出并且导致泵的压力输出的减小。 联接到阀芯的螺线管设置阀芯处于第二位置的输出压力。

    Feedback acceleration reduction for fluid supply valves
    28.
    发明授权
    Feedback acceleration reduction for fluid supply valves 有权
    流体供应阀的反馈加速度降低

    公开(公告)号：US07797081B2

    公开(公告)日：2010-09-14

    申请号：US11770375

    申请日：2007-06-28

    Applicant: Frank A DeMarco ,  Hongliu Du ,  Brian D Kuras ,  Thomas M Sopko

    Inventor： Frank A DeMarco ,  Hongliu Du ,  Brian D Kuras ,  Thomas M Sopko

    IPC: G05D7/06 ,  G05D16/00

    CPC classification number: F16H61/431 ,  B60W2520/105 ,  F16H59/48 ,  F16H61/472 ,  F16H2059/6861 ,  F16H2061/0078

    Abstract: A system and method for controlling a variator operate to detect variator torques and/or internal pressures and generates a preliminary corrective command. The preliminary corrective command is transformed via a dynamic transform to account for system characteristics during transient operating conditions such as machine acceleration, such that the acceleration of the system during transient periods is not torque-limited by static torque-control map values. In an embodiment, the acceleration may be positive or negative, and in a further embodiment, braking is automatically applied in the case of negative requested power or desired machine retarding.

    Abstract translation: 用于控制变换器的系统和方法用于检测变换器转矩和/或内部压力并产生初步校正指令。 通过动态变换来转换初步纠正命令，以解决诸如机械加速的瞬态操作条件下的系统特性，使得瞬态期间系统的加速度不受静态扭矩控制映射值的扭矩限制。 在一个实施例中，加速度可以是正或负，并且在另一实施例中，在负请求功率或期望的机器延迟的情况下，自动地施加制动。

    System for controlling a power output
    29.
    发明授权
    System for controlling a power output 有权
    用于控制功率输出的系统

    公开(公告)号：US07536856B2

    公开(公告)日：2009-05-26

    申请号：US11289701

    申请日：2005-11-30

    Applicant: Hongliu Du ,  Tony L. Marcott ,  Saurabh Pandey

    Inventor： Hongliu Du ,  Tony L. Marcott ,  Saurabh Pandey

    IPC: F16D31/02

    CPC classification number: F16H61/46 ,  F16H47/04 ,  F16H59/16 ,  F16H61/433 ,  F16H61/472 ,  F16H2059/683 ,  F16H2059/6861

    Abstract: A system for controlling a power output is disclosed. The system includes a hydraulic actuator configured to output a first torque and a source of pressurized fluid configured to supply a flow of pressurized fluid to the hydraulic actuator. The system further includes a controller configured to control the flow of pressurized fluid as a function of the first torque, a predetermined torque, and changes to the first torque caused by a load operatively connected to the hydraulic actuator.

    Abstract translation: 公开了一种用于控制功率输出的系统。 该系统包括液压致动器，该液压致动器被配置为输出第一扭矩和加压流体源，该加压流体源构造成将加压流体流供应到液压致动器。 该系统还包括控制器，该控制器被配置为根据第一扭矩，预定扭矩以及由可操作地连接到液压致动器的负载引起的第一转矩的变化来控制加压流体的流动。

    FEEDBACK ACCELERATION REDUCTION FOR FLUID SUPPLY VALVES
    30.
    发明申请
    FEEDBACK ACCELERATION REDUCTION FOR FLUID SUPPLY VALVES 有权
    用于流体供应阀的反馈加速减速

    公开(公告)号：US20090005914A1

    公开(公告)日：2009-01-01

    申请号：US11770375

    申请日：2007-06-28

    Applicant: FRANK A. DEMARCO ,  Hongliu Du ,  Brian D. Kuras ,  Thomas M. Sopko

    Inventor： FRANK A. DEMARCO ,  Hongliu Du ,  Brian D. Kuras ,  Thomas M. Sopko

    IPC: G05D7/06 ,  F16K31/02 ,  G05D16/00

    CPC classification number: F16H61/431 ,  B60W2520/105 ,  F16H59/48 ,  F16H61/472 ,  F16H2059/6861 ,  F16H2061/0078

    Abstract: A system and method for controlling a variator operate to detect variator torques and/or internal pressures and generates a preliminary corrective command. The preliminary corrective command is transformed via a dynamic transform to account for system characteristics during transient operating conditions such as machine acceleration, such that the acceleration of the system during transient periods is not torque-limited by static torque-control map values. In an embodiment, the acceleration may be positive or negative, and in a further embodiment, braking is automatically applied in the case of negative requested power or desired machine retarding.

    Abstract translation: 用于控制变换器的系统和方法用于检测变换器转矩和/或内部压力并产生初步校正指令。 通过动态变换来转换初步纠正命令，以解决诸如机械加速的瞬态操作条件下的系统特性，使得瞬态期间系统的加速度不受静态扭矩控制映射值的扭矩限制。 在一个实施例中，加速度可以是正或负，并且在另一实施例中，在负请求功率或期望的机器延迟的情况下，自动地施加制动。

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