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1. 发明授权

US07441404B2 Configurable hydraulic control system 失效
标题翻译：可配置液压控制系统
公开(公告)号：US07441404B2
公开(公告)日：2008-10-28
申请号：US10998592
申请日：2004-11-30
申请人： Lonnie James Devier , Shoji Tozawa , Stephen V. Lunzman
发明人： Lonnie James Devier , Shoji Tozawa , Stephen V. Lunzman
IPC分类号： F16D31/02
CPC分类号： E02F3/431 , E02F3/963
摘要： A control system for a work machine having a plurality of removably attachable work tools is disclosed. The control system has a tool recognition device configured to generate a recognition signal corresponding to each of the removably attachable work tools, and at least one fluid actuator configured to move at least one of the plurality of removably attachable work tools. The control system also has at least one fluid sensor configured to generate a load signal and at least one operator interface device configured to generate a desired velocity signal. The control system further has a controller in communication with the tool recognition device, the at least one fluid actuator, the at least one fluid sensor, and the at least one input device. The controller is configured to command a velocity for the fluid actuator in response to the recognition signal, the load signal, and the desired velocity signal.
摘要翻译：公开了一种用于具有多个可移除安装的作业工具的作业机械的控制系统。所述控制系统具有工具识别装置，其被配置为产生对应于每个所述可拆卸地附接的作业工具的识别信号，以及至少一个流体致动器，其构造成移动所述多个可移除可拆卸的工作工具中的至少一个。控制系统还具有配置成产生负载信号的至少一个流体传感器和配置成产生所需速度信号的至少一个操作者接口装置。控制系统还具有与刀具识别装置，至少一个流体致动器，至少一个流体传感器和至少一个输入装置连通的控制器。控制器被配置为响应于识别信号，负载信号和期望的速度信号来命令流体致动器的速度。

2. 发明授权

US5560387A Hydraulic flow priority system 失效
标题翻译：液压流量优先系统
公开(公告)号：US5560387A
公开(公告)日：1996-10-01
申请号：US351965
申请日：1994-12-08
申请人： Lonnie J. Devier , John J. Krone , Stephen V. Lunzman
发明人： Lonnie J. Devier , John J. Krone , Stephen V. Lunzman
IPC分类号： F15B13/06 , E02F9/20 , E02F9/22 , F15B11/16
CPC分类号： E02F9/2232 , E02F9/2025 , E02F9/2221 , E02F9/2228 , E02F9/2296 , F15B11/162 , F15B2211/20546 , F15B2211/3111 , F15B2211/40515 , F15B2211/428 , F15B2211/45 , F15B2211/6355 , F15B2211/6652 , F15B2211/6653 , F15B2211/71 , F15B2211/781 , Y10T137/0318 , Y10T137/87217
摘要： A control system is provided for a hydraulic circuit having first and second hydraulic valves, a valve spool position sensor, and first and second input devices for producing first and second operation signals. A controller receives a signal from the valve spool position sensor and the second operation signal and responsively modifies the value of the second operation signal in response to the valve spool position signal.
摘要翻译：提供一种用于具有第一和第二液压阀的液压回路，阀芯位置传感器以及用于产生第一和第二操作信号的第一和第二输入装置的控制系统。控制器从阀芯位置传感器和第二操作信号接收信号，并响应于阀芯位置信号响应地修改第二操作信号的值。

3. 发明授权

US5951258A Torque limiting control system for a hydraulic work machine 失效
标题翻译：液压作业机械转矩限制控制系统
公开(公告)号：US5951258A
公开(公告)日：1999-09-14
申请号：US890627
申请日：1997-07-09
申请人： Kevin J. Lueschow , Stephen V. Lunzman
发明人： Kevin J. Lueschow , Stephen V. Lunzman
IPC分类号： F02D29/04 , F04B49/06 , F15B11/00 , F04B49/00
CPC分类号： F04B49/065 , F04B2201/0206 , F04B2203/0603 , F04B2203/0605 , F04B2205/05
摘要： An apparatus for controlling an electrohydraulic system of a work machine having an engine that drives a variable displacement pump is disclosed. The apparatus includes a pump displacement setting device that produces a pump command signal, a pressure sensor that detects the fluid pressure associated with the variable displacement pump and produces a pressure signal, and an engine speed sensor that detects the speed of the engine and produce an engine speed signal. A microprocessor computes the torque demand on the engine in response to the desired pump displacement, determines a torque limit associated with the engine in response to the engine speed, and responsively modifies the pump command signal to limit the engine torque.
摘要翻译：公开了一种用于控制具有驱动变排量泵的发动机的作业机械的电动液压系统的装置。该装置包括产生泵命令信号的泵位移设置装置，检测与可变排量泵相关联的流体压力并产生压力信号的压力传感器，以及检测发动机速度并产生发动机转速信号。微处理器响应于期望的泵位移来计算发动机的扭矩需求，响应于发动机转速确定与发动机相关联的转矩极限，并且响应地修改泵命令信号以限制发动机转矩。

4. 发明授权

US5366202A Displacement controlled hydraulic proportional valve 失效
标题翻译：位移控制液压比例阀
公开(公告)号：US5366202A
公开(公告)日：1994-11-22
申请号：US90375
申请日：1993-07-06
申请人： Stephen V. Lunzman
发明人： Stephen V. Lunzman
IPC分类号： F15B13/043 , F15B13/16 , F16K31/124
CPC分类号： F15B13/0435 , F15B13/0402 , F15B13/0433 , F15B13/16 , Y10T137/86614
摘要： A displacement controlled hydraulic proportional valve is provided with a dashpot disposed between a main valve spool and a pilot valve spool to stabilize the proportional valve. The dashpot includes a bore in a spring retainer engaging the main valve spool and a plunger axially extending from a spring retainer engaging the pilot valve spool with the plunger extending into the bore to define a dashpot chamber. The plunger is sized to permit restricted fluid flow thereby when the spools move relative to each other thereby dampening relative movement between the valve spools. Dampening the relative movement between the valve spools drastically reduces the amount of overshoot by the main valve spool.
摘要翻译：位移控制液压比例阀设置有设置在主阀阀芯和先导阀阀芯之间的缓冲器，以稳定比例阀。缓冲器包括与主阀芯接合的弹簧保持器中的孔，以及从与引导阀阀芯接合的弹簧保持器轴向延伸的柱塞，柱塞延伸到孔中以限定缓冲器室。柱塞的尺寸设定成允许限制的流体流动，从而当线轴相对于彼此移动时，从而阻尼阀芯之间的相对运动。阻止阀芯之间的相对运动大大减少了主阀芯的过冲量。

5. 发明授权

US5197864A On-off pressure cutoff control for a variable displacement hydraulic pump 失效
标题翻译：可变排量液压泵的开 - 关压力切断控制
公开(公告)号：US5197864A
公开(公告)日：1993-03-30
申请号：US821203
申请日：1992-01-16
申请人： Stephen V. Lunzman , John J. Krone , Lonnie J. Devier
发明人： Stephen V. Lunzman , John J. Krone , Lonnie J. Devier
IPC分类号： E02F9/22 , F04B49/00 , F04B49/08
CPC分类号： F04B49/08
摘要： High pressure cutoff controls are useful for variable displacement hydraulic pumps for reducing power losses at high pressure levels. Some operators, however, believe that they get more work from pumps not having the high pressure cutoff control. The subject on-off high pressure cutoff control includes an on-off valve disposed in a pilot passage connected to an output port of a pump and to an end of a high pressure cutoff valve. The on-off valve is selectively movable between a first position at which pressurized fluid passes through the pilot passage to the end of the high pressure cutoff valve to prevent it from functioning as a high pressure cutoff valve. Thus, an operator has the option of operating the hydraulic pump with or without the high pressure cutoff control.
摘要翻译：高压截止控制对于可变排量液压泵来说是有用的，用于降低高压级别的功率损耗。然而，一些操作人员认为，他们从没有高压截止控制的泵获得更多的工作。被摄体开 - 关高压切断控制装置包括设置在连接到泵的输出端口和高压截止阀的端部的先导通道中的开关阀。开关阀可以选择性地在第一位置和第二位置之间移动，在该第一位置，加压流体通过引导通道到达高压截止阀的端部，以防止其作为高压截止阀而起作用。因此，操作者可选择在具有或不具有高压切断控制的情况下操作液压泵。

6. 发明授权

US08403098B2 Work machine hydraulics control system 有权
标题翻译：工作机械液压控制系统
公开(公告)号：US08403098B2
公开(公告)日：2013-03-26
申请号：US11067271
申请日：2005-02-28
申请人： Stephen V. Lunzman , Muhammed Were
发明人： Stephen V. Lunzman , Muhammed Were
IPC分类号： B60K17/10
CPC分类号： E02F9/226 , E02F9/2235 , F16H2059/6861
摘要： A hydraulic power control system for a work machine is provided. The system may include a hydraulic power output device selected from the group consisting of a hydraulic motor and a work implement hydraulic actuator. The system may also include a variable displacement hydraulic pump configured to supply hydraulic fluid to the hydraulic power output device. The system may further include at least one pressure sensor configured to measure pressure of the hydraulic fluid at a location between the pump and the hydraulic power output device. In addition, the system may include at least one temperature sensor configured to measure a temperature of the hydraulic fluid in the system. The system may include a controller configured to control a displacement of the pump based on a pressure measurement of the at least one pressure sensor and a temperature measurement of the at least one temperature sensor.
摘要翻译：提供了一种用于工作机械的液压动力控制系统。该系统可以包括从由液压马达和工作液压致动器组成的组中选择的液压动力输出装置。该系统还可以包括可变排量的液压泵，其构造成向液压动力输出装置供应液压流体。该系统还可以包括至少一个压力传感器，该压力传感器被配置为在泵和液压动力输出装置之间的位置处测量液压流体的压力。另外，该系统可以包括构造成测量系统中的液压流体的温度的至少一个温度传感器。该系统可以包括控制器，其被配置为基于至少一个压力传感器的压力测量和至少一个温度传感器的温度测量来控制泵的位移。

7. 发明授权

US5680760A Hydraulic drive system 失效
标题翻译：液压驱动系统
公开(公告)号：US5680760A
公开(公告)日：1997-10-28
申请号：US623073
申请日：1996-03-28
申请人： Stephen V. Lunzman
发明人： Stephen V. Lunzman
IPC分类号： F15B11/05 , E02F9/22 , F15B11/16 , F15B21/08 , F16D31/02
CPC分类号： F15B21/08 , E02F9/2228 , E02F9/2235 , E02F9/2296 , F15B11/165 , F15B2211/20546 , F15B2211/30505 , F15B2211/3111 , F15B2211/3144 , F15B2211/31576 , F15B2211/327 , F15B2211/40515 , F15B2211/413 , F15B2211/41563 , F15B2211/426 , F15B2211/45 , F15B2211/6313 , F15B2211/6346 , F15B2211/7135
摘要： A hydraulic drive system for a construction machine includes a pump for delivering fluid under pressure from a fluid reservoir, at least one hydraulic actuator selectively driven by the pressurized fluid, and at least one closed-center directional control valve connected in parallel to the pump. The control valve has an "off" position which blocks fluid flow therethrough and at least one "on" position for controlling the flow of fluid to the hydraulic actuator. A control device generates a signal for actuation of the hydraulic actuator. A control unit receives the control device signal for operating the control valve associated with the hydraulic actuator. A bypass line leads from the pump back to the reservoir. A variable position bypass valve is interposed in the bypass line and controls flow through the bypass line. The control unit modulates the bypass valve for optimum operation. A hybrid control senses pressure in the actuator and modifies the control signal in response to the load pressure.
摘要翻译：一种用于建筑机械的液压驱动系统包括用于在压力下从流体储存器输送流体的泵，由加压流体选择性驱动的至少一个液压致动器以及与泵并联连接的至少一个闭合中心的方向控制阀。控制阀具有阻止流体流动的“关闭”位置和用于控制流体流向液压致动器的至少一个“开”位置。控制装置产生用于致动液压致动器的信号。控制单元接收用于操作与液压致动器相关联的控制阀的控制装置信号。旁路管路从泵返回到储存器。旁路管路中插入有可变位置旁通阀，控制旁通管路的流量。控制单元调节旁通阀以获得最佳操作。混合控制器感测致动器中的压力并且响应于负载压力修改控制信号。

8. 发明授权

US5182908A Control system for integrating a work attachment to a work vehicle 失效
标题翻译：用于将工作附件集成到工作车辆的控制系统
公开(公告)号：US5182908A
公开(公告)日：1993-02-02
申请号：US819705
申请日：1992-01-13
申请人： Lonnie J. Devier , John J. Krone , Stephen V. Lunzman , Howard A. Marsden
发明人： Lonnie J. Devier , John J. Krone , Stephen V. Lunzman , Howard A. Marsden
IPC分类号： E02F9/20 , E02F9/22 , F15B11/16 , F15B21/00 , F15B21/08 , G05B19/042 , G05B19/43
CPC分类号： E02F9/2221 , F15B11/162 , F15B11/165 , F15B21/08 , G05B19/042 , G05B19/43 , F15B2211/20546 , F15B2211/20576 , F15B2211/6309 , F15B2211/633 , F15B2211/6333 , F15B2211/6336 , F15B2211/6346 , F15B2211/6651 , F15B2211/6652 , F15B2211/71 , F15B2211/781 , F15B2211/865
摘要： An apparatus controls a fluid system of a work vehicle. The work vehicle has an engine and at least one fluid circuit which has a pump driven by the engine. A plurality of control valves controllably pass fluid from the pump to a plurality of respective work elements. The control valves have movable valve stems. A work attachment which has a respective control valve is added to the fluid system. A plurality of operator control elements provide demand signals in response to selected settings. Each demand signal is indicative of a requested fluid flow to a respective work element or work attachment. A memory device stores select parameters of the fluid system. One of the select parameters is a predetermined priority value representing the precedence in which fluid is delivered from the pump to the control valve of the work attachment. A controller receives the predetermined priority value of the work attachment and the demand signals. The controller responsively determines the sequence in which fluid is distributed from the pump to the respective control valves. Then the controller delivers control signals to the rerspective control valves in response to the determination, selectively positioning the stem of the respective control valves.
摘要翻译：一种装置控制作业车辆的流体系统。工作车辆具有发动机和至少一个具有由发动机驱动的泵的流体回路。多个控制阀可控地将流体从泵传递到多个相应的工作元件。控制阀具有可动阀杆。具有相应控制阀的工件附加到流体系统中。多个操作员控制元件响应于所选择的设置来提供需求信号。每个需求信号指示要求的流体流向相应的工件或工件附件。存储装置存储流体系统的选择参数。选择参数中的一个是预定的优先级值，其表示流体从泵输送到工件附件的控制阀的优先级。控制器接收工作附件和需求信号的预定优先级值。控制器响应地确定流体从泵分配到相应的控制阀的顺序。然后，控制器响应于确定，向控制阀提供控制信号，选择性地定位各个控制阀的阀杆。

9. 发明授权

US5953977A Simulation modeling of non-linear hydraulic actuator response 有权
标题翻译：非线性液压执行器响应的仿真建模
公开(公告)号：US5953977A
公开(公告)日：1999-09-21
申请号：US172306
申请日：1998-10-14
申请人： Murali Krishna , Stephen V. Lunzman
发明人： Murali Krishna , Stephen V. Lunzman
IPC分类号： E02F3/43 , E02F9/20 , E02F9/22 , F15B11/16 , F15B19/00 , F15B21/08 , F15B13/16 , F16D31/02
CPC分类号： E02F9/2296 , E02F3/435 , E02F9/2025 , E02F9/2203 , E02F9/2292 , F15B11/16 , F15B19/007 , F15B21/087 , F15B2211/20576 , F15B2211/6309 , F15B2211/6336 , F15B2211/6652 , F15B2211/6656 , F15B2211/7142 , F15B2211/78
摘要： In order to accomplish many tasks of a machine efficiently, a motion planning system predetermines the response of the machine to a given set of motion commands. With two or more actuators being driven by a single hydraulic pump, there may not be adequate hydraulic pressure to drive both of the actuators at the speed requested. In order to determine the non-linear response of the actuators and the optimal combination of motions of the moving parts driven by the actuators, a controller for the machine is modeled as a linear dynamic system. The non-linear response of the actuators is modeled using a look-up table that is a function of internal variables of the machine's actuators and hydraulic system. The number of input, or independent, variables that are supplied to the table look-up functions is proportional to the number of actuators being driven by a single pump. Sensors provide data regarding the internal state of each actuator including variables such as spool valve position and cylinder force. These variables are used to index into tables containing data that represents each actuator's constraint surface. The constraint surfaces are predetermined and are dependent on the state of the other actuators driven by the same pump.
摘要翻译：为了有效地完成机器的许多任务，运动规划系统预先确定机器对给定的一组运动命令的响应。由两个或多个致动器由单个液压泵驱动，可能没有足够的液压来以所需的速度驱动两个致动器。为了确定致动器的非线性响应和由致动器驱动的运动部件的运动的最佳组合，机器的控制器被建模为线性动态系统。执行器的非线性响应使用查询表进行建模，该查询表是机器执行器和液压系统的内部变量的函数。提供给表查找功能的输入或独立变量的数量与由单个泵驱动的执行器的数量成比例。传感器提供关于每个致动器的内部状态的数据，包括诸如滑阀位置和气缸力的变量。这些变量用于索引到包含表示每个执行器约束表面的数据的表。约束表面是预定的，并且取决于由相同的泵驱动的其它致动器的状态。

10. 发明授权

US5701933A Hydraulic control system having a bypass valve 失效
标题翻译：具有旁通阀的液压控制系统
公开(公告)号：US5701933A
公开(公告)日：1997-12-30
申请号：US672181
申请日：1996-06-27
申请人： Stephen V. Lunzman
发明人： Stephen V. Lunzman
IPC分类号： E02F9/22 , F04B49/22 , F15B11/042 , F15B13/08
CPC分类号： F15B11/042 , E02F9/2228 , E02F9/2235 , E02F9/2296 , F04B49/225 , F15B2211/20546 , F15B2211/30505 , F15B2211/3056 , F15B2211/3111 , F15B2211/327 , F15B2211/40515 , F15B2211/413 , F15B2211/41509 , F15B2211/41581 , F15B2211/45 , F15B2211/50572 , F15B2211/5156 , F15B2211/6336 , F15B2211/7053 , F15B2211/7058 , F15B2211/71 , Y10T137/87177
摘要： A hydraulic control system has a closed center control valve disposed to control flow of pressurized fluid from a pump to an actuator and a bypass valve disposed to control fluid flow through a bypass line connecting the pump to a reservoir. A controller connected to the control valve and the bypass valve is operative to controllably move the control valve toward an open, flow communicating position and the bypass valve toward a closed flow blocking position. A pressure compensating valve is disposed in the bypass line to maintain a predetermined pressure differential across the bypass valve when the pressure upstream of the bypass valve exceeds a predetermined level so that the flow through a area opening in the bypass valve is substantially commensurate with the opening at pressures above the predetermined level.
摘要翻译：液压控制系统具有闭合的中心控制阀，其设置成控制从泵到致动器的加压流体的流动，以及设置成控制通过将泵连接到储存器的旁通管线的流体流动的旁路阀。连接到控制阀和旁通阀的控制器可操作以可控制地将控制阀朝向打开的流动连通位置和旁路阀朝向封闭的流动阻塞位置移动。当旁通阀上游的压力超过预定水平时，压力补偿阀设置在旁通管路中，以保持旁通阀上的预定压差，使得通过旁通阀开口的区域的流量与开口基本相当在高于预定水平的压力下。

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