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公开(公告)号：US06305162B1
公开(公告)日：2001-10-23
申请号：US09282339
申请日：1999-03-31
IPC分类号： F16D3102
CPC分类号： E02F9/2285 , E02F9/2221 , E02F9/2228 , F15B19/00 , F15B21/087
摘要： The present invention provides a method and apparatus for controlling a fluid system. The fluid system includes a hydraulic circuit having a pump driven by an engine. The pump delivers fluid to an actuator through a valve assembly. The method includes the steps of receiving an operator input, determining a condition of the hydraulic circuit, determining a valve command in response to the circuit condition and the operator input, and delivering the valve command to the valve assembly.
摘要翻译： 本发明提供了一种用于控制流体系统的方法和装置。 流体系统包括具有由发动机驱动的泵的液压回路。 泵通过阀组件将流体输送到致动器。 该方法包括以下步骤：接收操作员输入，确定液压回路的状况，响应于电路条件和操作者输入确定阀指令，以及将阀命令传送到阀组件。
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2.再颁专利Method and apparatus for controlling differentially driven wheel-slip for an articulated machine 失效用于控制铰接机器的差速驱动轮滑的方法和装置
公开(公告)号：USRE36152E
公开(公告)日：1999-03-16
申请号：US732798
申请日：1997-01-22
CPC分类号： B60T8/175 , B60T8/4809 , B62D11/08 , B62D11/183 , B62D12/00 , B60T2201/14
摘要： An anti-spin apparatus for a machine is disclosed. The machine is articulated and has at least one axle set with at least two driven wheels. The anti-spin apparatus includes braking mechanisms which controllably apply braking forces to each of the driven wheels. A controller produces a slip signal having a value responsive to the difference in rotational velocity between the wheels of the axle set. A transducer produces an articulation signal having a value responsive to the angle of articulation of the machine. Further, a microprocessor receives the slip signal and the articulation signal, and produces a braking control signal. One of the braking mechanisms receives the braking control signal and responsively applies the braking forces to the faster rotating wheel.
摘要翻译： 公开了一种用于机器的抗旋转装置。 该机器是铰接的并且具有至少一个具有至少两个从动轮的轴组。 防旋转装置包括可控制地将制动力施加到每个从动轮的制动机构。 控制器产生具有响应于车轴组的车轮之间的旋转速度差的值的滑差信号。 换能器产生具有响应于机器的铰接角度的值的关节运动信号。 此外，微处理器接收滑差信号和关节运动信号，并产生制动控制信号。 制动机构中的一个接收制动控制信号，并且响应地将制动力施加到较快的转轮上。
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公开(公告)号：US5873244A
公开(公告)日：1999-02-23
申请号：US976152
申请日：1997-11-21
CPC分类号： E02F9/2296 , E02F9/2228 , E02F9/2235 , E02F9/2282 , F15B11/16 , F15B21/087 , F15B2211/20546 , F15B2211/3116 , F15B2211/3144 , F15B2211/327 , F15B2211/6346 , F15B2211/6654 , F15B2211/71
摘要： A positive flow control system is provided that uses open-centered control valves in a series connection to provide priority between different fluid circuits and to provide requested flow regardless of the load pressure while minimizing unused or wasted flow. This is accomplished by providing a restriction in the last open-centered control valve to controllably restrict the flow therethrough when the valve is in its neutral position and having the source of pressurized fluid at a minimum displacement position that substantially matches the rate of flow across the restriction. A controller controls the displacement of the source of pressurized fluid and the displacement of the respective open-centered control valves in proportional to the respective input commands. Initial movement of the last open-centered control valve closes off the restricted flow thereacross to the reservoir prior to the source of pressurized fluid being communicated to the associated actuator. The subject system provides priority control and an effective control of wasted fluid while providing the needed flow rate regardless of the load without needing a special control arrangement for priority or separate bypass valve to control wasted flow.
摘要翻译： 提供了一种积极的流量控制系统，其使用串联连接中的开放中心的控制阀来提供不同流体回路之间的优先级，并且在不影响负载压力的同时提供所需的流量，同时最小化未使用或浪费的流量。 这是通过在最后一个开放式中心的控制阀中提供限制来实现的，当阀处于其中立位置并且使加压流体源处于最小位移位置时可控制地限制流过其中的流量，该最小位移位置基本上与穿过 限制。 控制器控制加压流体源的位移和相应的开放中心的控制阀的位移与相应的输入命令成正比。 在加压流体源传递到相关联的致动器之前，最后一个开放式中心控制阀的初始运动关闭了与储存器的限制流。 主题系统提供优先控制和有效地控制浪费的流体，同时提供所需的流量而不管负载如何，而不需要用于优先的特殊控制装置或单独的旁路阀来控制浪费的流量。
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公开(公告)号：US5899008A
公开(公告)日：1999-05-04
申请号：US861554
申请日：1997-05-22
CPC分类号： E02F9/2203 , E02F9/2025 , E02F9/2207 , E02F9/2296 , F15B11/16 , F15B21/087 , F15B2211/6336 , F15B2211/6346 , F15B2211/6355 , F15B2211/6652 , F15B2211/6654 , F15B2211/71 , F15B2211/75
摘要： An apparatus for controllably moving a work implement. The implement is connected to a work machine and is moveable in response to the operation of a hydraulic cylinder. The apparatus includes an operator controlled joystick that generates an operator command signal, which is indicative of a desired velocity of the work implement movement. Cylinder position sensors produce cylinder position signals in response to the position of lift and tilt cylinders. A valve assembly receives an electrical valve signal, and controllably provides hydraulic fluid flow to the respective hydraulic cylinders to move the cylinders in accordance with the operator command signal. A controller receives the operator command and cylinder position signals, and responsively produces a pump command signal to change the displacement of a variable displacement pump to regulate the movement of the hydraulic cylinders.
摘要翻译： 一种用于可控地移动工作装置的装置。 工具连接到作业机器，并且可以响应于液压缸的操作而移动。 该装置包括操作者控制的操纵杆，其产生操作者指令信号，该指示信号表示工作装置运动的期望速度。 气缸位置传感器响应于提升和倾斜气缸的位置产生气缸位置信号。 阀组件接收电气阀信号，并且可控制地将液压流体流动到相应的液压缸，以根据操作者指令信号移动气缸。 控制器接收操作员指令和气缸位置信号，并且响应地产生泵命令信号以改变可变排量泵的位移以调节液压缸的运动。
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5.发明授权Method and apparatus for controlling an implement of a work machine using linkage angles 失效使用联动角度控制作业机械的工具的方法和装置
公开(公告)号：US5875701A
公开(公告)日：1999-03-02
申请号：US871087
申请日：1997-06-09
CPC分类号： F15B9/09 , E02F3/431 , E02F9/2029 , E02F9/2214
摘要： An apparatus for controllably moving a work implement is disclosed. The implement is connected to a work machine and is moveable in response to operation of a hydraulic cylinder. The apparatus includes an operator controlled joystick. A joystick position sensor senses the position of the joystick and responsively generates an operator command signal. Boom and bucket angle sensors sense the position of the work implement and responsively produces an boom angle signal and a bucket angle signal respectively. A microprocessor based controller receives the boom angle, bucket angle, and operator command signals, modifies the operator command signal, and produces an electrical valve signal in response to the modified operator command signal. An electrohydraulic valve receives the electrical valve signal, and controllably provides hydraulic fluid flow to the hydraulic cylinder in response to a magnitude of the electrical valve signal.
摘要翻译： 公开了一种用于可控地移动工作装置的装置。 工具连接到作业机器，并且可以响应于液压缸的操作而移动。 该装置包括操作者控制的操纵杆。 操纵杆位置传感器感测操纵杆的位置，并响应地产生操作员指令信号。 起重臂和铲斗角度传感器感测工作装置的位置，并分别响应地产生起重臂角度信号和铲斗角度信号。 基于微处理器的控制器接收起重臂角度，铲斗角度和操作员指令信号，修改操作员指令信号，并响应修改的操作员指令信号产生电气阀信号。 电动液压阀接收电动阀信号，并且响应于电动阀信号的大小可控地向液压缸提供液压流体流。
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6.发明授权
公开(公告)号：US5535124A
公开(公告)日：1996-07-09
申请号：US164675
申请日：1993-12-09
CPC分类号： B60T8/175 , B60T8/4809 , B62D11/08 , B62D11/183 , B62D12/00 , B60T2201/14
摘要： An anti-spin apparatus for a machine is disclosed. The machine is articulated and has at least one axle set with at least two driven wheels. The anti-spin apparatus includes braking mechanisms which controllably apply braking forces to each of the driven wheels. A controller produces a slip signal having a value responsive to the difference in rotational velocity between the wheels of the axle set. A transducer produces an articulation signal having a value responsive to the angle of articulation of the machine. Further, a microprocessor receives the slip signal and the articulation signal, and produces a braking control signal. One of the braking mechanisms receives the braking control signal and responsively applies the braking forces to the faster rotating wheel.
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7.发明授权Hydraulic control system for improving pump response and dynamic matching of pump and valve 失效液压控制系统，用于提高泵响应和泵与阀的动态匹配公开(公告)号：US06446433B1
公开(公告)日：2002-09-10
申请号：US09661714
申请日：2000-09-14
IPC分类号： F16D3102
CPC分类号： F15B21/087 , F04B49/065 , F04B49/225 , F04B2205/16 , F04B2205/172 , F15B11/006 , F15B11/08 , F15B21/008 , F15B21/08 , F15B2211/20546 , F15B2211/30575 , F15B2211/327 , F15B2211/35 , F15B2211/6303 , F15B2211/6652 , F15B2211/6654 , F15B2211/853
摘要： A hydraulic control system having a pump for delivering fluid under pressure from a fluid reservoir, a hydraulic actuator selectively driven by the fluid, the system comprises a main flow control valve connected between the pump and the actuator for selectively providing the fluid to and from the actuator, and a control unit connected to the main flow control valve for controlling operation of the main flow control valve to control the rate of change of the area of the main flow control valve relative to the delivery of fluid from the pump, and the control unit connected to the pump to increase or decrease the actual pump command proportional to the inverse of the pump command.
摘要翻译： 一种具有用于在压力下从流体储存器输送流体的泵的液压控制系统，由流体选择性驱动的液压致动器，所述系统包括连接在泵和致动器之间的主流量控制阀，用于选择性地将流体提供到和 致动器和连接到主流量控制阀的控制单元，用于控制主流量控制阀的操作，以控制主流量控制阀相对于来自泵的流体输送的面积的变化率，并且控制 连接到泵的单元增加或减少与泵命令的倒数成比例的实际泵命令。
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8.发明授权公开(公告)号：US06173572B1
公开(公告)日：2001-01-16
申请号：US09404013
申请日：1999-09-23
IPC分类号： F16D3102
CPC分类号： F15B21/087 , E02F9/2203 , E02F9/2228 , E02F9/2235 , E02F9/2296 , F15B11/165 , F15B21/045 , F15B2211/20546 , F15B2211/255 , F15B2211/3051 , F15B2211/30525 , F15B2211/31576 , F15B2211/327 , F15B2211/40515 , F15B2211/413 , F15B2211/41563 , F15B2211/426 , F15B2211/45 , F15B2211/50518 , F15B2211/5151 , F15B2211/6309 , F15B2211/6323 , F15B2211/633 , F15B2211/6343 , F15B2211/6346 , F15B2211/71
摘要： The present invention provides a method and apparatus for controlling the fluid flow in a fluid circuit 102. The fluid circuit 102 includes a pump 32 driven by an engine 106. The pump 32 delivers fluid to at least one actuator 44, 45 through a control valve assembly 120, 122. In addition, the pump is connected to a bypass control valve, which is connected to a fluid tank. The method includes the steps of establishing a desired fluid flow to be delivered by the pump, determining an expected fluid flow to be delivered by the pump in response to the desired fluid flow, and determining a position of the bypass control valve in response to the expected fluid flow.
摘要翻译： 本发明提供了一种用于控制流体回路102中的流体流动的方法和装置。流体回路102包括由发动机106驱动的泵32.泵32通过控制阀向至少一个致动器44,45输送流体 组件120,122。另外，泵连接到旁通控制阀，该旁路控制阀连接到流体箱。 该方法包括以下步骤：建立要由泵输送的期望的流体流，响应于期望的流体流量确定由泵输送的预期流体流量;以及响应于所述流体流动来确定旁路控制阀的位置 预期流体流动。
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公开(公告)号：US5737993A
公开(公告)日：1998-04-14
申请号：US668783
申请日：1996-06-24
申请人： Michael A. Cobo , John D. Duffy
发明人： Michael A. Cobo , John D. Duffy
CPC分类号： E02F3/431 , E02F9/2025
摘要： An apparatus for controllably moving a work implement is disclosed. The implement is connected to a work machine and is moveable in response to operation of a hydraulic cylinder. The apparatus includes an operator controlled joystick. A joystick position sensor senses the position of the joystick and responsively generates an operator command signal, which is indicative of a desired velocity. A velocity sensor senses the velocity of the lift cylinder and tilt cylinders and responsively producing respective cylinder velocity signals. A microprocessor receives the cylinder velocity and operator command signals, determines the difference between the actual and desired cylinder velocity, and responsively produces an electrical valve signal in response to the velocity difference. An electrohydraulic valve receives the electrical valve signal, and controllably provides hydraulic fluid flow to the hydraulic cylinder in response to a magnitude of the electrical value signal.
摘要翻译： 公开了一种用于可控地移动工作装置的装置。 工具连接到作业机器，并且可以响应于液压缸的操作而移动。 该装置包括操作者控制的操纵杆。 操纵杆位置传感器感测操纵杆的位置，并且响应地产生指示期望速度的操作者指令信号。 速度传感器检测提升缸和倾斜缸的速度，并且响应地产生相应的气缸速度信号。 微处理器接收气缸速度和操作员指令信号，确定实际气缸速度和期望气缸速度之间的差值，并响应于速度差响应地产生电气阀门信号。 电液阀接收电气阀信号，并且响应于电值信号的大小可控地向液压缸提供液压流体流。
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