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公开(公告)号：US20050084387A1
公开(公告)日：2005-04-21
申请号：US10686369
申请日：2003-10-15
Applicant: Craig Klocke
Inventor： Craig Klocke
CPC classification number: F04B1/324 , F04B49/065 , F04B2201/12051
Abstract: A control system that can be used on a hydrostatic pump has a feedback sensor to detect the angle of a swashplate. From the information gathered by the feedback sensor about the swashplate and another set command, this information is sent to a microprocessor. The microprocessor then uses an algorithm to create an output signal and also sends out a superimposed dither signal. This dithered output signal is then received by a pressure control that causes a dither servo pressure in a servo system. Because of the dither pressure the servo system adjusts the position of the swashplate.
Abstract translation: 可用于静液压泵的控制系统具有用于检测斜盘角度的反馈传感器。 从反馈传感器收集的关于斜盘和另一组命令的信息，该信息被发送到微处理器。 然后，微处理器使用算法来产生输出信号并且还发出叠加的抖动信号。 然后，通过在伺服系统中产生抖动伺服压力的压力控制来接收该抖动输出信号。 由于抖动压力，伺服系统调整斜盘的位置。
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公开(公告)号：US4487109A
公开(公告)日：1984-12-11
申请号：US363701
申请日：1982-03-30
Applicant: Wesley A. Burandt , Albert L. Markunas
Inventor： Wesley A. Burandt , Albert L. Markunas
CPC classification number: F04B1/324 , F04B2201/12051 , Y10S60/911
Abstract: The invention relates to an electro-hydraulic control system for a power drive unit having a wobbler controlled variable displacement hydraulic motor wherein the electro-hydraulic control system causes the displacement of the hydraulic motor to match a load to be driven by a power drive unit output shaft coupled to the motor. The system results in the hydraulic motor displacement matching the load as a combined function of the input command signal, the actual wobbler position, as well as the velocity and position of the power drive unit output shaft.
Abstract translation: 本发明涉及一种具有摇摆控制的可变排量液压马达的动力驱动单元的电动液压控制系统，其中电液控制系统使得液压马达的位移与由驱动单元输出驱动的负载相匹配 轴连接到电机。 该系统导致液压马达与负载匹配的位移作为输入指令信号，实际摆臂位置以及动力单元输出轴的速度和位置的组合函数。
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公开(公告)号：US3650434A
公开(公告)日：1972-03-21
申请号：US3650434D
申请日：1970-04-06
Applicant: REPUBLIC CORP
Inventor： JOHNSON JAY , GARDNER CHARLES R
CPC classification number: F04B13/02 , F04B1/295 , F04B2201/12051 , G05D11/008
Abstract: A device for accurately maintaining a constant volumetric proportion between liquids delivered to a mixing point. The device includes means for positively metering the volume of a principal liquid; means for controllably pumping a secondary liquid, means for utilizing the output of the metering apparatus to operate and control the pumping apparatus; means for passing the secondary liquid to and away from the pumping apparatus; means for manually establishing a desired volumetric proportion between the principal and secondary liquids, and means for registering the volume of primary liquid which has passed through the positive metering apparatus. The device is particularly useful in applications wherein the volumetric proportion of a principal liquid to a secondary liquid in a mixture must be accurately controlled.
Abstract translation: 用于精确地保持输送到混合点的液体之间的恒定体积比例的装置。 该装置包括用于积极计量主要液体的体积的装置; 用于可控地泵送次级液体的装置，用于利用计量装置的输出来操作和控制泵送装置的装置; 用于将二次液体送往和远离泵送装置的装置; 用于在主液体和次液之间手动建立所需体积比例的装置，以及用于记录通过正计量装置的初级液体体积的装置。 该装置在必须准确地控制混合物中主要液体与次级液体的体积比例的应用中特别有用。
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公开(公告)号：US09599107B2
公开(公告)日：2017-03-21
申请号：US14162912
申请日：2014-01-24
Applicant: CNH America, LLC
Inventor： Duqiang Wu , Navneet Gulati
IPC: F04B1/32 , F16H61/425 , F04B49/06 , B60K6/08 , E02F9/22
CPC classification number: F04B49/06 , B60K6/08 , E02F9/2253 , E02F9/2289 , F04B1/324 , F04B49/065 , F04B2201/12051 , F16H61/425
Abstract: A method for controlling a hydrostatic drive unit of a work vehicle may generally include determining a reference swashplate position of a hydraulic pump of the hydrostatic drive unit, wherein the reference swashplate position is associated with an uncompensated current command, and determining an actual swashplate position of the hydraulic pump, wherein the actual swashplate position differs from the reference swashplate position due to a loading condition of the work vehicle. The method may also include determining a closed-loop current command based a on the actual and reference swashplate positions and generating a modified current command based on the uncompensated current command and/or the closed-loop current command. The modified current command may differ from the closed-loop current command when an operator input is within a predetermined control input range and may be equal to the closed-Loop current command when the operator input is outside the predetermined control input range.
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45.发明申请公开(公告)号：US20090229456A1
公开(公告)日：2009-09-17
申请号：US11922657
申请日：2006-12-12
Applicant: Thomas Kunze , Wilfried Eichner
Inventor： Thomas Kunze , Wilfried Eichner
IPC: F01B25/00
CPC classification number: F04B51/00 , F04B1/34 , F04B2201/0802 , F04B2201/12051 , F04B2205/05 , F04C2270/80
Abstract: The invention relates to a device (1) for state monitoring in hydrostatic displacement units (2), in particular in axial piston machines (3) operated as a pump or as a motor. The device (1) comprises an acquisition unit (4) with a multiplicity of sensors (5) which are attached to the hydrostatic displacement unit (2) and serve to acquire monitoring data (6) and operating data (7), and an evaluating unit (8) which has a device (9) for analysing the monitoring data in the frequency range and a device (10) for analysing the monitoring data in the time range. A diagnostic unit (11) with an output unit (13) is connected to the evaluating unit (8).
Abstract translation: 本发明涉及一种用于静液压位移单元（2）中状态监测的装置（1），特别是在作为泵或马达操作的轴向活塞机（3）中。 装置（1）包括具有多个传感器（5）的采集单元（4），所述多个传感器（5）附接到静液压位移单元（2）并且用于获取监视数据（6）和操作数据（7） 单元（8），其具有用于分析频率范围内的监视数据的设备（9）和用于在时间范围内分析监视数据的设备（10）。 具有输出单元（13）的诊断单元（11）连接到评估单元（8）。
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Patent Agency Ranking
公开(公告)号：US20080181793A1
公开(公告)日：2008-07-31
申请号：US11669584
申请日：2007-01-31
Applicant: Sanjay Ishvarlal Mistry , Christopher Paul Masini , Steven Henry Gluck
Inventor： Sanjay Ishvarlal Mistry , Christopher Paul Masini , Steven Henry Gluck
CPC classification number: F04B1/324 , F04B1/22 , F04B2201/12051
Abstract: A variable displacement pump including a first sensor configured to measure a position of the variable displacement pump. The first sensor may be a rotary angle sensor that is mounted to the yoke shaft of the variable displacement pump. A controller is configured to receive position data from the first sensor and control a single or dual stage hydraulic control valve thereby adjusting the output of the first variable displacement pump.
Abstract translation: 一种可变排量泵，包括构造成测量可变排量泵的位置的第一传感器。 第一传感器可以是安装在可变排量泵的轭轴上的旋转角传感器。 控制器被配置为从第一传感器接收位置数据并且控制单级或双级液压控制阀，由此调节第一可变排量泵的输出。
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公开(公告)号：US07275474B2
公开(公告)日：2007-10-02
申请号：US11440636
申请日：2006-05-25
Applicant: Bruce D. Larkin , Joseph A. Kovach , Matthew H. Simon , Eric B. Chapman , Dan T. Nguyen
Inventor： Bruce D. Larkin , Joseph A. Kovach , Matthew H. Simon , Eric B. Chapman , Dan T. Nguyen
CPC classification number: F04B1/2014 , F04B2201/12051 , G01D5/34776
Abstract: In a variable displacement type hydraulic pump/motor assembly including at least one internally movable component, such as a yoke, a swashplate, and the means for moving the swashplate, the improvement includes imparting on this component absolute location indicia markings and the addition of an optical/electronic sensor unit capable of reading such indicia markings fixedly located on a housing of the pump/motor assembly and including an optical read head extending into the housing interior and located at a spaced distance from the indicia markings for reading same, relative to a reference location, and producing a signal indicative of the absolute position of the movable component. The signal can then, in turn, be used for controlling the displacement of the pump/motor assembly. A method for determining the absolute component position is also set forth.
Abstract translation: 在包括至少一个内部可移动部件（例如轭架，斜盘）和用于移动斜盘的装置的可变排量型液压泵/电动机组件中，改进包括赋予该部件绝对位置标记标记和添加 光学/电子传感器单元，其能够读取固定地位于泵/马达组件的壳体上的标记标记，并且包括延伸到壳体内部并位于与标记标记间隔开的位置处的光学读取头，用于相对于 并产生指示可移动部件的绝对位置的信号。 然后，信号又可以用于控制泵/马达组件的位移。 还阐述了确定绝对分量位置的方法。
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公开(公告)号：US07086225B2
公开(公告)日：2006-08-08
申请号：US10776768
申请日：2004-02-11
Applicant: George Kadlicko
Inventor： George Kadlicko
IPC: F04B49/00
CPC classification number: F16D31/02 , F04B1/324 , F04B49/002 , F04B49/08 , F04B2201/0805 , F04B2201/1201 , F04B2201/12051 , Y10S92/02
Abstract: A variable capacity hydraulic machine has a rotating group located within a casing and a control housing secured to the casing to extend across and seal an opening in the casing. The control housing accommodates a control circuit and a pair of sensors to sense change in parameters associated with the rotating group. One of the sensors is positioned adjacent the barrel on the rotating group to sense rotational speed and the other senses displacement of the swashplate. The control housing accommodates a control valve and accumulator to supply fluid to the control valve.
Abstract translation: 可变容量液压机具有位于壳体内的旋转组和固定到壳体的控制壳体，以延伸跨过并密封壳体中的开口。 控制壳体容纳控制电路和一对传感器以感测与旋转组相关联的参数的变化。 传感器中的一个定位在旋转组上的筒附近以感测旋转速度，而另一个感测旋转斜盘的位移。 控制壳体容纳控制阀和蓄能器以将流体供应到控制阀。
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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
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。
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公开(公告)号：US20040115065A1
公开(公告)日：2004-06-17
申请号：US10317210
申请日：2002-12-12
Applicant: Caterpillar Inc.
Inventor： Hongliu Du , Mark P. Vonderwell
IPC: F04B049/00
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。
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