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    Actuator control system implementing adaptive flow control
    23.
    发明申请
    Actuator control system implementing adaptive flow control 有权
    执行器控制系统实现自适应流量控制

    公开(公告)号：US20090071144A1

    公开(公告)日：2009-03-19

    申请号：US11898608

    申请日：2007-09-13

    申请人： Pengfei Ma ,  Chad Timothy Brickner ,  Tonglin Shang ,  Vlad Petru Patrangenaru

    发明人： Pengfei Ma ,  Chad Timothy Brickner ,  Tonglin Shang ,  Vlad Petru Patrangenaru

    IPC分类号： F15B15/00

    CPC分类号： F15B21/082 ,  E02F9/2203 ,  E02F9/2228 ,  E02F9/2235 ,  F15B11/165 ,  F15B21/087 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/253 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6346

    摘要： An actuator control system is disclosed. The actuator control system may have a pump and at least one actuator. The actuator control system may further have an actuator valve configured to control the at least one actuator. The actuator control system may also have a pump pressure sensor configured to determine a pump pressure value and a load pressure sensor configure to determine a load pressure value. The actuator control system may additionally have a controller configured to receive the pump pressure value and the load pressure value. The controller may further be configured to compare the pump pressure value and the load pressure value, and selectively implement a primary control strategy and a secondary control strategy based on the comparison.

    摘要翻译： 公开了一种致动器控制系统。 致动器控制系统可以具有泵和至少一个致动器。 致动器控制系统还可以具有构造成控制至少一个致动器的致动器阀。 致动器控制系统还可以具有配置成确定泵压力值的泵压力传感器和配置成确定负载压力值的负载压力传感器。 致动器控制系统可以另外具有被配置为接收泵压力值和负载压力值的控制器。 控制器还可以被配置为比较泵压力值和负载压力值，并且基于比较选择性地实施主控制策略和次级控制策略。

    Actuator control system implementing adaptive flow control
    24.
    发明授权
    Actuator control system implementing adaptive flow control 有权
    执行器控制系统实现自适应流量控制

    公开(公告)号：US07905089B2

    公开(公告)日：2011-03-15

    申请号：US11898608

    申请日：2007-09-13

    申请人： Pengfei Ma ,  Chad Timothy Brickner ,  Tonglin Shang ,  Vlad Petru Patrangenaru

    发明人： Pengfei Ma ,  Chad Timothy Brickner ,  Tonglin Shang ,  Vlad Petru Patrangenaru

    IPC分类号： F16D31/02

    CPC分类号： F15B21/082 ,  E02F9/2203 ,  E02F9/2228 ,  E02F9/2235 ,  F15B11/165 ,  F15B21/087 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/253 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6346

    摘要： An actuator control system is disclosed. The actuator control system may have a pump and at least one actuator. The actuator control system may further have an actuator valve configured to control the at least one actuator. The actuator control system may also have a pump pressure sensor configured to determine a pump pressure value and a load pressure sensor configure to determine a load pressure value. The actuator control system may additionally have a controller configured to receive the pump pressure value and the load pressure value. The controller may further be configured to compare the pump pressure value and the load pressure value, and selectively implement a primary control strategy and a secondary control strategy based on the comparison.

    摘要翻译： 公开了一种致动器控制系统。 致动器控制系统可以具有泵和至少一个致动器。 致动器控制系统还可以具有构造成控制至少一个致动器的致动器阀。 致动器控制系统还可以具有配置成确定泵压力值的泵压力传感器和配置成确定负载压力值的负载压力传感器。 致动器控制系统可以另外具有被配置为接收泵压力值和负载压力值的控制器。 控制器还可以被配置为比较泵压力值和负载压力值，并且基于比较选择性地实施主控制策略和次级控制策略。

    HYDRAULIC SYSTEM HAVING ENERGY RECOVERY
    25.
    发明申请
    HYDRAULIC SYSTEM HAVING ENERGY RECOVERY 审中-公开
    具有能源回收的液压系统

    公开(公告)号：US20130152565A1

    公开(公告)日：2013-06-20

    申请号：US13328716

    申请日：2011-12-16

    申请人： Pengfei Ma ,  Jeffrey L. Kuehn ,  Jeremy T. Peterson

    发明人： Pengfei Ma ,  Jeffrey L. Kuehn ,  Jeremy T. Peterson

    IPC分类号： F15B1/027

    CPC分类号： F15B21/14 ,  E02F9/123 ,  E02F9/2217 ,  E02F9/2242 ,  E02F9/2292 ,  E02F9/2296 ,  F15B2211/20546 ,  F15B2211/20569 ,  F15B2211/20576 ,  F15B2211/625 ,  F15B2211/88

    摘要： A hydraulic system for a machine is disclosed. The hydraulic system may have a pump configured to pressurize fluid, a swing motor driven by pressurized fluid to swing a body of the machine relative to an undercarriage, and a first circuit fluidly connecting the pump to the swing motor. The hydraulic system may also have an energy recovery motor mechanically connected to the swing motor, at least one accumulator, and a second circuit fluidly connecting the at least one accumulator to the energy recovery motor.

    摘要翻译： 公开了一种用于机器的液压系统。 液压系统可以具有构造成对流体加压的泵，由加压流体驱动的摆动马达相对于起落架摆动机体，以及将泵流体连接到回转马达的第一回路。 液压系统还可以具有机械地连接到回转马达，至少一个储能器和将至少一个蓄能器流体连接到能量回收马达的第二回路的能量回收马达。

    VALVE GRADUALLY COMMUNICATING A PRESSURE SIGNAL
    27.
    发明申请
    VALVE GRADUALLY COMMUNICATING A PRESSURE SIGNAL 有权
    VALVE GRADUALLY COMMUNICATIONING A PRESSURE SIGNAL

    公开(公告)号：US20060243129A1

    公开(公告)日：2006-11-02

    申请号：US11117384

    申请日：2005-04-29

    申请人： Pengfei Ma ,  Jiao Zhang ,  Jeff Kuehn ,  Kalpesh Patel

    发明人： Pengfei Ma ,  Jiao Zhang ,  Jeff Kuehn ,  Kalpesh Patel

    IPC分类号： F15B13/04

    CPC分类号： F15B11/006 ,  F15B11/05 ,  F15B2211/20546 ,  F15B2211/30535 ,  F15B2211/30575 ,  F15B2211/6054 ,  F15B2211/7053 ,  Y10T137/8667

    摘要： A valve is provided for a hydraulic system having a source of pressurized fluid, a fluid actuator, and a proportional pressure compensating valve. The valve has a bore in fluid communication with the source and the fluid actuator. The valve also has a valve element disposed in the bore and movable between a flow blocking position and a flow passing position to selectively fluidly communicate the source with the fluid actuator. The valve also has a valve signal passageway disposed within the valve element and configured to be in fluid communication with a pressurized fluid having a signal pressure indicative of pressure supplied to the fluid actuator. The valve further has first and second orifices disposed within the valve element in fluid communication with the valve signal passageway and the bore. The valve signal passageway is configured to communicate the signal pressure with the first and second orifices. Movement of the valve element from the flow blocking position to the flow passing position fluidly communicates the first orifice with a system signal passageway before the second orifice, and fluidly communicates both the first and second orifices with the system signal passageway when the valve element is in the flow passing position.

    摘要翻译： 为具有加压流体源的液压系统，流体致动器和比例压力补偿阀提供阀。 阀具有与源和流体致动器流体连通的孔。 阀还具有设置在孔中的阀元件，并且可在阻流位置和流动通过位置之间移动，以选择性地将源与流体致动器流体连通。 阀还具有设置在阀元件内的阀信号通道，并被构造成与加压流体流体连通，该加压流体具有指示供应给流体致动器的压力的信号压力。 阀还具有设置在阀元件内的与阀信号通道和孔流体连通的第一和第二孔。 阀信号通道被配置为将信号压力与第一和第二孔相通。 阀元件从流动阻挡位置到流通位置的移动使第一孔口与第二孔口之前的系统信号通道流体连通，并且当阀门元件处于第二孔口时，将第一和第二孔口与系统信号通道流体连通 流通位置。

    Hydraulic system having a pressure compensator
    29.
    发明授权
    Hydraulic system having a pressure compensator 有权
    具有压力补偿器的液压系统

    公开(公告)号：US07204084B2

    公开(公告)日：2007-04-17

    申请号：US10975413

    申请日：2004-10-29

    申请人： Pengfei Ma ,  Jiao Zhang

    发明人： Pengfei Ma ,  Jiao Zhang

    IPC分类号： F15B13/04 ,  F15B13/08

    CPC分类号： F15B11/003 ,  E02F9/2203 ,  E02F9/2225 ,  E02F9/226 ,  E02F9/2296 ,  F15B11/05 ,  F15B2211/20546 ,  F15B2211/30535 ,  F15B2211/30575 ,  F15B2211/6051 ,  F15B2211/7053

    摘要： A hydraulic system for a work machine is disclosed. The hydraulic system has a source of pressurized fluid and a fluid actuator with a first chamber and a second chamber. The hydraulic system also has a first valve configured to selectively fluidly communicate the source with the first chamber and a second valve configured to selectively fluidly communicate the source with the second chamber. The hydraulic system further has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the source and the first and second valves.

    摘要翻译： 公开了一种用于作业机械的液压系统。 液压系统具有加压流体源和具有第一室和第二室的流体致动器。 液压系统还具有构造成选择性地将源与第一室流体连通的第一阀和被配置为选择性地将源与第二室流体连通的第二阀。 液压系统还具有比例压力补偿阀，其被配置为控制在源和第一和第二阀之间引导的流体的压力。

    Hydraulic system having a pressure compensator
    30.
    发明申请
    Hydraulic system having a pressure compensator 有权
    具有压力补偿器的液压系统

    公开(公告)号：US20060090460A1

    公开(公告)日：2006-05-04

    申请号：US10975413

    申请日：2004-10-29

    申请人： Pengfei Ma ,  Jiao Zhang

    发明人： Pengfei Ma ,  Jiao Zhang

    IPC分类号： F16D31/02

    CPC分类号： F15B11/003 ,  E02F9/2203 ,  E02F9/2225 ,  E02F9/226 ,  E02F9/2296 ,  F15B11/05 ,  F15B2211/20546 ,  F15B2211/30535 ,  F15B2211/30575 ,  F15B2211/6051 ,  F15B2211/7053

    摘要： A hydraulic system for a work machine is disclosed. The hydraulic system has a source of pressurized fluid and a fluid actuator with a first chamber and a second chamber. The hydraulic system also has a first valve configured to selectively fluidly communicate the source with the first chamber and a second valve configured to selectively fluidly communicate the source with the second chamber. The hydraulic system further has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the source and the first and second valves.

    摘要翻译： 公开了一种用于作业机械的液压系统。 液压系统具有加压流体源和具有第一室和第二室的流体致动器。 液压系统还具有构造成选择性地将源与第一室流体连通的第一阀和被配置为选择性地将源与第二室流体连通的第二阀。 液压系统还具有比例压力补偿阀，其被配置为控制在源和第一和第二阀之间引导的流体的压力。