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公开(公告)号：US4801247A
公开(公告)日：1989-01-31
申请号：US900445
申请日：1986-08-26
Applicant: Toshio Hashimoto , Susumu Yoshino , Akira Ohashi , Masao Egi , Yasuyuki Shingu , Takashi Yoshioka , Siro Hattori
Inventor： Toshio Hashimoto , Susumu Yoshino , Akira Ohashi , Masao Egi , Yasuyuki Shingu , Takashi Yoshioka , Siro Hattori
CPC classification number: F04B1/324 , F04B49/06 , F04B2201/12051
Abstract: A variable displacement piston pump of the type in which the hydraulic pressure in a pressure chamber of an output flow variable element is controlled by a proportional electro-hydraulic control valve to control the displacement of the variable element against a spring to vary the output flow within a range between a maximum output flow and a full cut-off and the output pressure or both the output pressure and the output flow of the pump are controlled electro-hydraulically through a closed loop. The variable displacement piston pump includes flow detector for generating an electric signal corresponding to the output flow of the pump, pressure detector for generating an electric signal corresponding to the output flow of the pump, and control amplifier responsive to the difference between a flow setting signal and the output signal of the flow detector to control a driving control current supplied to the proportional electro-hydraulic control valve and also responsive to the detected output pressure reaching a predetermined value to control the driving control signal in accordance with the difference between a pressure setting signal and the output signal of the pressure detector.
Abstract translation: 一种可变容量活塞泵，其中输出流量可变元件的压力室中的液压压力由比例电动液压控制阀控制，以控制可变元件相对于弹簧的位移，以改变其内部的输出流量 在最大输出流量和全截止值之间的范围以及泵的输出压力或输出压力以及输出流量两者之间的范围通过闭环电液压控制。 可变排量活塞泵包括用于产生对应于泵的输出流的电信号的流量检测器，用于产生对应于泵的输出流的电信号的压力检测器，以及响应于流量设定信号 以及流量检测器的输出信号，以控制提供给比例电液控制阀的驱动控制电流，并且还响应于检测到的输出压力达到预定值，以根据压力设定之间的差来控制驱动控制信号 信号和压力检测器的输出信号。
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公开(公告)号：US4777797A
公开(公告)日：1988-10-18
申请号：US807983
申请日：1985-12-12
Applicant: Norbert Mucheyer
Inventor： Norbert Mucheyer
CPC classification number: F04B49/08 , F04B2201/12051
Abstract: A hydraulic system having an axial piston pump as a control pump which is regulated by a regulating device as a function of the demands with respect to volumetric flow and pressure of a load circuit supplied by it. On the suction side, the control pump is optionally provided with a partial amount of its maximum delivery volume by a feed pump, while the remaining part of the corresponding delivery quantity is drawn in directly from a storage container, bypassing the feed pump. Possibly impermissibly high vacuums on the suction side of the control pump are detected by a suction safety device which acts on the control pump via its regulating device so that the control pump delivers smaller quantities of hydraulic fluid unitl permissible operating conditions are reached.
Abstract translation: 一种液压系统，其具有作为控制泵的轴向柱塞泵，其由调节装置调节，作为关于由其供应的负载电路的体积流量和压力的要求的函数。 在吸入侧，控制泵可选地通过供给泵设置有部分量的最大输送量，而相应输送量的剩余部分直接从旁路进料泵的储存容器中拉出。 在控制泵的吸入侧可能具有不可允许的高真空度是通过其通过其调节装置作用于控制泵的吸入安全装置来检测的，使得控制泵输送更少量的液压流体单元1允许的操作条件。
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公开(公告)号：US4456434A
公开(公告)日：1984-06-26
申请号：US353529
申请日：1982-03-01
Applicant: Yehia El Ibiary
Inventor： Yehia El Ibiary
CPC classification number: F04B1/324 , F04B49/002 , F04B49/065 , F04B2201/12051 , Y10T137/86622 , Y10T137/8671
Abstract: A variable displacement pump control system comprising a variable displacement pump having a movable element for controlling pump displacement, a hydraulic motor for moving the movable element, and a transducer for producing an electric signal corresponding to the actual position of the movable element. A comparator compares the electrical signal from the transducer and an electrical signal corresponding to the desired displacement of the pump and produces an error signal. A control operates in response to the error signal to meter fluid flow from the pump output to the hydraulic motor. The control comprises a relief valve, a compensator valve and a servo valve. The servo valve is preferably a single-stage valve that includes damping orifices to provide stability.
Abstract translation: 一种可变排量泵控制系统，包括具有用于控制泵排量的可移动元件的可变排量泵，用于移动可移动元件的液压马达和用于产生对应于可移动元件的实际位置的电信号的换能器。 比较器比较来自换能器的电信号和对应于泵的期望位移的电信号，并产生误差信号。 控制器响应于误差信号进行操作，以计量从泵输出到液压马达的流体流量。 控制装置包括安全阀，补偿阀和伺服阀。 伺服阀优选地是包括阻尼孔以提供稳定性的单级阀。
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公开(公告)号：US20150330373A1
公开(公告)日：2015-11-19
申请号：US14653870
申请日：2013-12-19
Applicant: EATON INDUSTRIAL IP GMBH & CO. KG
Inventor： Henrik LINDNER , Markus MEITINGER
IPC: F04B1/32
CPC classification number: F04B1/324 , F04B1/2078 , F04B2201/12051 , H01L41/125
Abstract: A sensor arrangement for determining an actual swashplate angle of a swashplate pivotally attached to a variable displacement hydraulic pump includes a control piston operable to control an angle of the swashplate relative to the variable displacement pump; a position marker arranged on the control piston; and a sensor arranged along the control piston to detect a movement of the position marker.
Abstract translation: 用于确定枢转地附接到可变排量液压泵的斜盘的实际斜盘角度的传感器装置包括可操作以控制斜盘相对于可变排量泵的角度的控制活塞; 布置在控制活塞上的位置标记; 以及沿着控制活塞布置的传感器，以检测位置标记的运动。
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公开(公告)号：US09115770B2
公开(公告)日：2015-08-25
申请号：US13186122
申请日：2011-07-19
Applicant: George Kadlicko
Inventor： George Kadlicko
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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Patent Agency Ranking
公开(公告)号：US20150147191A1
公开(公告)日：2015-05-28
申请号：US14607126
申请日：2015-01-28
Applicant: Parker-Hannifin Corporation
Inventor： David Mark Heathcoat, JR. , Jason Lee Emmette , Roger Paul Gray , Somer Renee Malone , Kirk Ayres Lola , Kerry Todd Brock , Eli Cutshall
CPC classification number: F04B1/20 , F04B1/2085 , F04B1/324 , F04B17/03 , F04B49/12 , F04B2201/12051 , F16D31/02 , F16H61/435
Abstract: A zero turn mower vehicle 10 includes left and right hydrostatic transmissions 11a, 11b driving wheels 15a, 15b. The transmissions 11a, 11b each include a swashplate type axial piston hydraulic pump 17 having a swashplate 22. A system 12 and method controls each pump 17. A controller 31 receives input signals and provides output signals to electric motors 33a, 33b to control each swashplate 22. Operator interface input devices 30a, 30b provide inputs to controller 31. Angle sensors 35a, 35b provide additional inputs to controller 31. Displacement amplifiers 36a, 36b amplify displacement of each swashplate 22, and torque amplifiers 34a, 34b amplify torque of electric motors 33a, 33b.
Abstract translation: 零转割机10包括左右静液压传动装置11a，11b驱动轮15a，15b。 变速器11a，11b各自包括具有斜盘22的斜盘式轴向柱塞液压泵17.系统12和方法控制每个泵17.控制器31接收输入信号并向电动机33a，33b提供输出信号以控制每个斜盘 22.操作员接口输入装置30a，30b向控制器31提供输入。角度传感器35a，35b向控制器31提供附加输入。位移放大器36a，36b放大每个斜盘22的位移，并且扭矩放大器34a，34b放大电动机的扭矩 33a，33b。
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公开(公告)号：US20060266211A1
公开(公告)日：2006-11-30
申请号：US11440636
申请日：2006-05-25
Applicant: Bruce Larkin , Joseph Kovach , Matthew Simon , Eric Chapman , Dan Nguyen
Inventor： Bruce Larkin , Joseph Kovach , Matthew Simon , Eric Chapman , Dan Nguyen
IPC: F01B31/12
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：US06848254B2
公开(公告)日：2005-02-01
申请号：US10610217
申请日：2003-06-30
Applicant: Hongliu Du
Inventor： Hongliu Du
CPC classification number: F03C1/0697 , F03C1/0686 , F04B2201/12051 , F04B2203/1202 , F04B2205/05 , F16D31/02
Abstract: A method and apparatus for controlling the motor output speed of a variable displacement hydraulic motor are disclosed. The method may include determining a value indicative of a motor output speed, determining a value indicative of a desired motor output speed, determining a desired position of a control valve using a nonlinear feedback control law, and, controlling the motor output speed as a function of the control valve position, wherein the nonlinear feedback control creates a first order system response.
Abstract translation: 公开了一种用于控制可变排量液压马达的马达输出速度的方法和装置。 该方法可以包括确定表示电动机输出速度的值，确定表示期望的电动机输出速度的值，使用非线性反馈控制律确定控制阀的期望位置，以及将电动机输出速度控制为一个功能 的控制阀位置，其中非线性反馈控制创建一阶系统响应。
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公开(公告)号：US5865602A
公开(公告)日：1999-02-02
申请号：US977927
申请日：1997-11-24
Applicant: Farhad Nozari
Inventor： Farhad Nozari
CPC classification number: F04B1/324 , F04B49/06 , F04B2201/12051 , F04B2203/0201 , F04B2207/01 , Y10S60/911
Abstract: A control system for an aircraft's electrically driven hydraulic pump. An electronic motor controller having closed loop feedback is utilized to directly control the prime mover speed in response to pump loading.
Abstract translation: 飞机电动液压泵的控制系统。 利用具有闭环反馈的电子马达控制器来响应于泵载荷来直接控制原动机速度。
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40.发明授权
公开(公告)号：US5267441A
公开(公告)日：1993-12-07
申请号：US819704
申请日：1992-01-13
Applicant: Lonnie J. Devier , John J. Krone , Stephen V. Lunzman , Howard A. Marsden
Inventor： Lonnie J. Devier , John J. Krone , Stephen V. Lunzman , Howard A. Marsden
CPC classification number: F16H61/475 , E02F9/2221 , E02F9/2296 , F04B49/065 , F04B2201/1201 , F04B2201/12051 , F04B2205/05 , F04B2207/041 , F04B2207/042 , F04B2207/047 , F16H2059/6853
Abstract: An apparatus for limiting the power output of a hydraulic system is disclosed. The hydraulic system has a variable displacement pump. The variable displacement pump has a movable swashplate and is driven by a source of motive power. The apparatus includes a memory device for storing a set of power modes. Each power mode has a predetermined power level associated with the hydraulic system and is defined by a plurality of set points. Each set point corresponds to a predetermined flow rate and discharge pressure of the pump. A device senses the speed of the source of motive power and producing a signal representative of the actual speed in response to the sensed speed. A device senses the pressure of the variable displacement pump and produces a signal representative of the actual pressure in response to the sensed pressure. A device senses the swashplate angle of the variable displacement pump and delivers a signal representative of the actual swashplate angle in response to the sensed swashplate angle. A device receives a desired power mode signal having a desired power level. The desired power level is different from the predetermined power levels associated with the set of power modes. A control device receives the actual speed, pressure and swashplate angle signals, and responsively determines a desired flow limit of the pump. The desired flow limit corresponds to the desired power level.
Abstract translation: 公开了一种用于限制液压系统的功率输出的装置。 液压系统具有可变排量泵。 可变排量泵具有可动的斜盘，并由动力源驱动。 该装置包括用于存储一组功率模式的存储装置。 每个功率模式具有与液压系统相关联的预定功率水平并且由多个设定点限定。 每个设定点对应于泵的预定流量和排出压力。 一个装置感测动力源的速度，并根据感测的速度产生代表实际速度的信号。 设备感测可变排量泵的压力，并响应于感测到的压力产生表示实际压力的信号。 设备感测可变排量泵的斜盘角度，并响应于感测的斜盘角度传送代表实际斜盘角度的信号。 设备接收具有期望功率电平的所需功率模式信号。 期望的功率水平不同于与该组功率模式相关联的预定功率水平。 控制装置接收实际的速度，压力和斜盘角度信号，并且响应地确定泵的期望流量极限。 期望的流量限制对应于期望的功率水平。
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