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

IPC: F03C1/40 ,  F16D31/02

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。

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

IPC: F04B1/32 ,  F04B49/06

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。

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

IPC: E02F9/20 ,  E02F9/22 ,  F04B49/06 ,  F15B11/00 ,  F16D31/02

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。

公开(公告)号：US5141402A

公开(公告)日：1992-08-25

申请号：US647609

申请日：1991-01-29

Applicant: James V. Bloomquist ,  Albin J. Niemic

Inventor： James V. Bloomquist ,  Albin J. Niemic

IPC: B29C45/82 ,  F04B49/06 ,  H02K17/30

CPC classification number: B29C45/82 ,  F04B49/06 ,  F04B49/065 ,  H02K17/30 ,  F04B2201/0403 ,  F04B2201/0805 ,  F04B2201/12051 ,  F04B2203/0201 ,  F04B2205/05

Abstract: An electric-motor hydraulic pump includes a housing having a stationary internal shaft. A pair of cylinder blocks are rotatably carried by the shaft within the housing, and an array of pistons are slidably disposed with each cylinder block. A yoke plate is mounted within the housing and engages the pistons for determining displacement of the pistons within the cylinder blocks. Fluid inlet and outlet ports are provided in the housing and are coupled to the cylinder blocks. An induction motor includes a rotor carried by the cylinder block for corotation therewith, and a stator mounted within the housing surrounding the rotor. An electronic controller for controlling outlet fluid pressure and flow from the pump includes a plurality of sensors mounted on the housing for sensing operating characteristics of the pump and motor to provide electronic sensor signals as functions thereof. Control electronics are responsive to the sensor signals for controlling fluid pressure and flow from the pump by varying effective displacement of the pump, and by varying the electrical power (current and frequency) applied to the motor.

Abstract translation: 电动机液压泵包括具有固定内部轴的壳体。 一对气缸体由轴可旋转地支承在壳体内，并且活塞阵列可滑动地布置有每个气缸体。 轭板安装在壳体内并与活塞接合，以确定活塞在气缸体内的位移。 流体入口和出口设置在壳体中并且联接到气缸体。 感应电动机包括由气缸体承载的用于与其共旋转的转子和安装在围绕转子的壳体内的定子。 用于控制出口流体压力和来自泵的流量的电子控制器包括安装在壳体上的多个传感器，用于感测泵和马达的操作特性，以提供作为其功能的电子传感器信号。 控制电子设备响应于传感器信号，通过改变泵的有效位移以及通过改变施加到电动机的电功率（电流和频率）来控制流体压力和来自泵的流量。

公开(公告)号：US5135031A

公开(公告)日：1992-08-04

申请号：US769112

申请日：1991-09-30

Applicant: Roy T. Burgess ,  Rajamouli Gunda ,  Frank Herta ,  Robert C. Hodges ,  James A. Kessler ,  Richard S. Leemhuis ,  Michael R. McCarty ,  Robert W. Stephens

Inventor： Roy T. Burgess ,  Rajamouli Gunda ,  Frank Herta ,  Robert C. Hodges ,  James A. Kessler ,  Richard S. Leemhuis ,  Michael R. McCarty ,  Robert W. Stephens

IPC: F04B49/06 ,  G05D16/20

CPC classification number: G05D16/2066 ,  F04B49/065 ,  F04B2201/1201 ,  F04B2201/12051 ,  F04B2205/05 ,  F04B2207/01 ,  F04B2207/0422 ,  Y10T137/86622

Abstract: A rotary hydraulic machine which includes a housing having a shaft mounted for rotation within the housing about a shaft axis. A cylinder block is coupled to the shaft for co-rotation with the shaft within the housing and includes a plurality of cylinders disposed in a circumferential array parallel to and surrounding the shaft axis. A piston is disposed to reciprocate within each of the cylinders and is coupled to a yoke for determining displacement of the pistons within the cylinders. A valve plate is mounted on a valve block and includes kidney-shaped slots for registering with the cylinders as the cylinder block rotates, and thereby connecting the cylinders to pump input and output ports. A microprocessor-based controller is externally mounted on the pump valve block and includes internal memory having various remotely-selectable control programs prestored therein. Sensors responsive to pump operating conditions are connected to the pump control electronics, and include a first sensor responsive to yoke position, a pressure sensor responsive to pump output pressure and a speed sensor responsive to angular velocity of shaft rotation. All of the electronic components are mounted on the valve block.

Abstract translation: 一种旋转液压机，其包括具有轴的壳体，所述轴安装成用于在所述壳体内围绕轴线旋转。 气缸体联接到轴上，用于与壳体内的轴共同旋转，并且包括多个圆筒，该圆柱体设置成平行于并围绕轴线的周向阵列。 活塞被设置成在每个气缸内往复运动，并且联接到轭，以确定活塞在气缸内的位移。 阀板安装在阀块上，并且在气缸体旋转时包括用于与气缸配准的肾形槽，从而将气缸连接到泵输入和输出端口。 基于微处理器的控制器外部安装在泵阀块上，并且包括其中预先存储有各种可远程选择的控制程序的内部存储器。 响应于泵操作条件的传感器连接到泵控制电子器件，并且包括响应于轭位置的第一传感器，响应于泵输出压力的压力传感器和响应于轴旋转的角速度的速度传感器。 所有电子部件安装在阀块上。

公开(公告)号：US4737079A

公开(公告)日：1988-04-12

申请号：US25497

申请日：1987-03-13

Applicant: Juetsu Kurosawa ,  Makoto Misawa

Inventor： Juetsu Kurosawa ,  Makoto Misawa

IPC: F04B27/14 ,  F04B13/00 ,  F04B27/08 ,  F04B27/18 ,  F04B49/10 ,  F04B1/26

CPC classification number: F04B49/103 ,  F04B27/1804 ,  F04B2027/1813 ,  F04B2027/1827 ,  F04B2027/1854 ,  F04B2201/12041 ,  F04B2201/12051 ,  F04B2201/1206

Abstract: A variable capacity wobble plate compressor of the type that a wobble plate mounted on a drive shaft is swung axially of the drive shaft as the drive shaft rotates, and pistons connected to the wobble plate make reciprocating motions in response to swinging of the wobble plate, wherein a change in the angularity of the wobble plate causes a change in stroke of the reciprocating motions of the pistons whereby the capacity of the compressor is varied. A sensing element arranged on the wobble plate is moved along a predetermined orbital path together with swinging of the wobble plate. A sensor arranged on a compressor housing generates an electric signal when the sensing element passes by the sensor as the wobble plate swings. A control unit determines the rotational speed of the compressor and the angularity of the wobble plate on the basis of the electric signal from the sensor. The sensor is so located as to align with a predetermined location between an axial center of the predetermined orbital path of swinging of the sensing element and an extreme possible point toward the pistons, when the wobble plate assumes the minimum angularity.

Abstract translation: 当驱动轴旋转时，安装在驱动轴上的摆动盘摆动在驱动轴的轴向的可变容量摆盘式压缩机，与摇摆板连接的活塞响应于摆盘的摆动而进行往复运动， 其中摆动板的角度的变化导致活塞的往复运动的行程改变，从而改变压缩机的容量。 布置在摆盘上的感测元件与摆动板的摆动一起沿着预定轨道路径移动。 布置在压缩机壳体上的传感器当摇摆板摆动时感测元件通过传感器时产生电信号。 控制单元基于来自传感器的电信号确定压缩机的旋转速度和摆动板的角度。 当摆动板呈现最小的角度时，传感器被定位成与传感元件摆动的预定轨道路径的轴向中心和朝向活塞的极端可能点之间的预定位置对齐。

公开(公告)号：US4494911A

公开(公告)日：1985-01-22

申请号：US489772

申请日：1983-04-29

Applicant: Duane J. Davis

Inventor： Duane J. Davis

IPC: F04B1/26 ,  F04B1/32

CPC classification number: F04B1/324 ,  F04B2201/12051 ,  Y10S60/911

Abstract: An electronic closed loop piston pump servo control system including a swash plate within the pump housing which controls pump output as a function of its position about a rotational axis, means for altering the position of said swash plate, means for producing electric signals representative of the desired and actual swash plate angular positions, and means for comparing these signals and producing a control or error signal to the means for altering the swash plate position as a function of these signal differences. The means for producing electric signals representative of the actual swash plate position includes a rotary potentiometer mounted in the pump housing and directly connected to the swash plate along a common axis of rotation. This potentiometer produces a d.c. signal indicating the angular position of the swash plate on this common axis. A failsafe circuit is provided in the comparator means which prevents the error signal from affecting the swash plate angular position if the feedback signal falls below a predetermined reference level. The potentiometer rotates through a relatively small arc such that when the sliding resistive contacts thereon are worn, the potentiometer contacts may be rotated to respond along a fresh arc.

Abstract translation: 一种电子闭环活塞泵伺服控制系统，包括在泵壳体内的斜盘，其根据其位于旋转轴线的位置来控制泵输出，用于改变所述斜盘的位置的装置，用于产生代表 期望的和实际的斜盘角度位置，以及用于比较这些信号并产生控制或误差信号到用于改变斜盘位置的装置作为这些信号差的函数的装置。 用于产生表示实际斜盘位置的电信号的装置包括安装在泵壳体中的旋转电位计，并沿着共同的旋转轴线直接连接到斜盘。 该电位器产生直流 指示斜盘在该公共轴上的角位置的信号。 在比较器装置中设置故障保护电路，如果反馈信号低于预定的参考电平，则防止误差信号影响斜盘角位置。 电位器旋转通过较小的电弧，使得当其上的滑动阻力接触被磨损时，电位器触点可以旋转以沿着新的电弧响应。

公开(公告)号：US4432703A

公开(公告)日：1984-02-21

申请号：US318064

申请日：1981-11-04

Applicant: Gerhard Beutler ,  Heinz Berthold ,  Joachim Morsch ,  Karl Schiene

Inventor： Gerhard Beutler ,  Heinz Berthold ,  Joachim Morsch ,  Karl Schiene

IPC: F04B1/26 ,  F04B49/00 ,  F04B49/06 ,  F16H61/40 ,  F16H61/46

CPC classification number: F04B49/065 ,  F04B2201/12051 ,  F04B2205/05 ,  F04B2207/041 ,  F04B2207/042

Abstract: An adjusting arrangement for a hydraulic pump with a variable flow quantity, having an operating cylinder located in a neutral position through the intermediary of a positively-acting resetting device, the piston of which is adjustable dependent upon the actual discharge pressure and dependent upon a parameter proportional to the actual discharge flow quantity into a position corresponding to the rated discharge flow quantity with consideration being given to the limiting value for maximum power output, maximum discharge pressure, maximum discharge flow quantity and, as required, the flow direction. An electronic control arrangement receives electrical signals corresponding to the rated discharge flow quantity and the actual discharge flow quantity and the actual pressure, which processes these signals under calculation of the actual power output and the actual pressure, and generates corresponding setting signals for the adjustment of the operating cylinder.

Abstract translation: 一种用于具有可变流量的液压泵的调节装置，其具有通过正向作用的复位装置的中间位置处于中间位置的操作气缸，其活塞可根据实际排出压力而调节，并且取决于参数 与实际排出流量成比例，考虑到最大功率输出的限制值，最大排出压力，最大排出流量以及根据需要的流动方向，进入与额定排出流量对应的位置。 电子控制装置接收对应于额定排放流量和实际排放流量以及实际压力的电信号，该实际压力在实际功率输出和实际压力的计算下处理这些信号，并且产生相应的设置信号用于调整 操作气缸。

公开(公告)号：WO2017121545A1

公开(公告)日：2017-07-20

申请号：PCT/EP2016/080125

申请日：2016-12-07

Applicant: DANFOSS POWER SOLUTIONS GMBH & CO OHG

Inventor： BAHNA, Peter ,  MARSCH, Suenje ,  LAFFRENZEN, Heiko

IPC: F04B1/14

CPC classification number: F04B1/146 ,  F04B2201/12041 ,  F04B2201/12051

Abstract: The invention is directed to a swashplate angle sensor (10) for a variable displacement hydraulic unit (1). The hydraulic unit (1) comprising a housing (2), within which a swashplate (3) with a rod shaped feedback-link (12) fixedly attached to the swashplate (3) is arranged pivotable around a swashplate axis (7). The angle sensor (10) comprising a magnet (16) mounted rotatable on a magnet carrier (13), and a sensor (15) for sensing the orientation of the magnet (16). The magnet carrier (13) is located in a control block (14) attached to the housing (2) and is located parallel to the feedback-link (12). The magnet carrier (13) is rotatable around a sensor axis (18) being parallel to the swashplate axis (7). A linkage spring (11) provides a connection between the feedback-link (12) and the magnet carrier (13) such that a pivoting of the swashplate (3) with the feedback-link (12) causes a rotation of the magnet carrier (13).

Abstract translation: 本发明涉及用于可变排量液压单元（1）的斜盘角度传感器（10）。 所述液压单元（1）包括壳体（2），所述斜盘（3）上固定地安装有具有杆状反馈连杆（12）的斜盘（3），所述斜盘围绕斜盘轴线（7）可枢转。 该角度传感器（10）包括可旋转地安装在磁体载体（13）上的磁体（16）以及用于感测磁体（16）的方向的传感器（15）。 磁体托架（13）位于连接到壳体（2）的控制块（14）中并且平行于反馈连接件（12）定位。 磁体托架（13）可围绕与斜盘轴线（7）平行的传感器轴线（18）旋转。 联动弹簧（11）在反馈连接件（12）和磁体托架（13）之间提供连接，使得斜盘（3）与反馈连接件（12）的枢转导致磁体托架 13）。

公开(公告)号：WO2015140622A1

公开(公告)日：2015-09-24

申请号：PCT/IB2015/000360

申请日：2015-03-18

Applicant: DANFOSS POWER SOLUTIONS INC.

Inventor： LIGENFELTER, Kevin ,  LAFAYETTE, Gary

IPC: F04B1/29 ,  F04B1/32 ,  F04B49/06

CPC classification number: F04B49/065 ,  F04B1/295 ,  F04B1/324 ,  F04B2201/12041 ,  F04B2201/12051

Abstract: A pump control system, comprising: a motor (12) configured to drive a pump (14); a pressure relief valve (22) in fluid communication with the pump (14); a torque control valve (32) connected to a swashplate of the pump (14) and in fluid communication with the pressure relief valve (22); a swashplate angle sensor (36) connected to the swashplate (34); and a computer (40) connected to the swashplate angle sensor (36) and the pressure relief valve (22) wherein the computer (40) controls the pressure relief valve (22) based upon swashplate displacement to achieve maximum system pressure. The corresponding method of controlling is also disclosed.

Abstract translation: 一种泵控制系统，包括：电动机（12），构造成驱动泵（14）; 与所述泵（14）流体连通的减压阀（22）; 与所述泵（14）的斜盘连接并与所述减压阀（22）流体连通的扭矩控制阀（32）; 连接到斜盘（34）的斜盘角传感器（36）; 以及连接到斜盘角度传感器（36）和压力释放阀（22）的计算机（40），其中计算机（40）基于斜盘位移来控制减压阀（22）以实现最大系统压力。 还公开了相应的控制方法。