Velocity based electronic control system for operating hydraulic equipment
    11.
    发明公开
    Velocity based electronic control system for operating hydraulic equipment 有权
    基于速度的电子控制系统,用于操作液压设备

    公开(公告)号:EP1626181A1

    公开(公告)日:2006-02-15

    申请号:EP05022849.3

    申请日:2003-09-23

    IPC分类号: F15B11/00 F15B21/08

    摘要: A control system for operating a hydraulic system (10) includes a user input device (47) which generates an input signal indicating desired movement of a hydraulic actuator (16). A mapping routine (50) converts the input signal into a velocity command indicating a desired actuator velocity. A valve opening routine (56) transforms the velocity command into a flow coefficient which characterizes fluid flow through the valve assembly (25) and from the flow coefficient produces a set of control signals designating levels of electric current to apply to valves (21-24) within the valve assembly. A pressure controller (64) regulates pressure in the supply line (14) in response to the velocity command. When the hydraulic system (10) has a plurality of functions (11,20), the control system adjusts each velocity command to equitably apportion fluid to each function, when the aggregate flow being demanded by the functions exceeds the total flow available from a source.

    摘要翻译: 用于操作液压系统(10)的控制系统包括产生指示液压致动器(16)的期望的运动的输入信号的用户输入装置(47)。 映射例程(50)将输入信号转换为指示期望致动器速度的速度命令。 阀打开例程(56)将速度命令转换为表征通过阀组件(25)的流体流量的流量系数,并且根据流量系数产生指定电流水平的一组控制信号以施加到阀(21-24 )在阀组件内。 压力控制器(64)响应于速度命令来调节供应管线(14)中的压力。 当液压系统(10)具有多个功能(11,20)时,控制系统调节每个速度命令,以便当功能要求的总流量超过从源可获得的总流量时,均衡地将流体分配给每个功能 。

    Velocity based method for controlling a hydraulic system
    14.
    发明公开
    Velocity based method for controlling a hydraulic system 有权
    Verfahrenfürhydraulische Steuervorrichtung auf Basis von Geschwindigkeit

    公开(公告)号:EP1403525A1

    公开(公告)日:2004-03-31

    申请号:EP03255948.6

    申请日:2003-09-23

    发明人: Tabor, Keith A.

    IPC分类号: F15B11/00 F15B21/08

    摘要: A hydraulic circuit branch includes a hydraulic actuator (16), such as a cylinder, and an assembly (25) of one or more electrohydraulic proportional valves (21-24) connected in series between a pressurized fluid supply line (14) and a tank return line (18). The force acting on the hydraulic actuator (16) is determined by sensing fluid pressures produced by the hydraulic actuator. Pressures in the supply and tank return lines also are sensed. The sensed pressures and a desired velocity for the hydraulic actuator (16) are employed to determine an equivalent flow coefficient, which characterizes fluid flow through the hydraulic circuit branch, either a conduction or restriction coefficient may be derived. The equivalent flow coefficient is used to determine how to activate each electrohydraulic proportional valve to achieve the desired velocity of the hydraulic actuator. The equivalent flow coefficient also is employed to control the pressure levels in the supply and tank return lines (14, 18).

    摘要翻译: 该方法涉及为液压致动器请求期望的速度,例如 气缸(16)。 感测到随作用在致动器上的力的变化而变化的压力。 基于期望的速度和感测到的压力导出描述通过液压回路支路的流体流动的等效流量系数。 基于流量系数控制液压系统(10)中的流体。 还包括用于操作电液比例阀的方法的独立权利要求,该电液比例阀在液压回路分支中与液压致动器串联连接。

    Velocity based electronic control system for operating hydraulic equipment
    17.
    发明公开
    Velocity based electronic control system for operating hydraulic equipment 有权
    Elektronische Steuereinrichtung auf Basis von Geschwindigkeit zur Steuerung eines Hydraulikkreises

    公开(公告)号:EP1626182A1

    公开(公告)日:2006-02-15

    申请号:EP05022850.1

    申请日:2003-09-23

    IPC分类号: F15B11/00 F15B21/08

    摘要: A control system for operating a hydraulic system (10) includes a user input device (47) which generates an input signal indicating desired motion, such as a desired velocity, of a hydraulic actuator (16). A mapping routine (50) converts the input signal into a command. A valve opening routine (56) transforms the command into a flow coefficient which characterizes fluid flow through the valve assembly (25) and from the flow coefficient produces a set of control signals designating levels of electric current to apply to valves (21-24) within the valve assembly. A pressure controller (64) regulates pressure in the supply line (14) in response to the command. When the hydraulic system (10) has a plurality of functions (11,20), the control system adjusts each command to equitably apportion fluid to each function, when the aggregate flow being demanded by the functions exceeds the total flow available from a source.

    摘要翻译: 用于操作液压系统(10)的控制系统包括用户输入装置(47),其生成指示液压致动器(16)的期望运动(例如期望速度)的输入信号。 映射例程(50)将输入信号转换为命令。 阀打开程序(56)将命令转换成表征通过阀组件(25)的流体流动的流量系数,并且根据流量系数产生一组控制信号,其指定施加到阀(21-24)的电流水平, 在阀组件内。 压力控制器(64)响应于该命令来调节供应管线(14)中的压力。 当液压系统(10)具有多个功能(11,20)时,当由功能要求的总流量超过从源获得的总流量时,控制系统调整每个命令以均衡地将流体分配给每个功能。

    Operating system for a programmable controller of a hydraulic system
    18.
    发明公开
    Operating system for a programmable controller of a hydraulic system 审中-公开
    Beriebssystem用于液压系统的可编程控制器

    公开(公告)号:EP1445674A3

    公开(公告)日:2004-12-15

    申请号:EP03255947.8

    申请日:2003-09-23

    IPC分类号: G05B19/05

    摘要: A programmable controller, for operating a machine such as one having a hydraulic system, includes a memory that stores a plurality of software function routines. A memory contains a first data file with address pointers to the function routines where the address pointers are listed in the order that the function routines may be executed. A second data file has a separate record associated with each of the address pointers and each record identifies the data variables required by the corresponding function routine. A third data file contains information about each of the variables. A code sequencer accesses the first data file and directs execution of the function routine in the order designated by the pointers. As each function routine executes, the respective record in the second data file is used to access the required variable information.

    Apparatus and method for providing vibration to an appendage of a work vehicle
    19.
    发明公开
    Apparatus and method for providing vibration to an appendage of a work vehicle 审中-公开
    Einrichtung und Methode zum Vibrieren eines Anbauteiles a einer Arbeitsmaschine

    公开(公告)号:EP1361312A1

    公开(公告)日:2003-11-12

    申请号:EP03252854.9

    申请日:2003-05-07

    IPC分类号: E02F3/40 E02F9/22 F15B21/12

    摘要: An apparatus and method for creating vibration of an appendage (126) of a work vehicle (100) is disclosed. The apparatus includes a hydraulic cylinder (210), first and second valve assemblies (235,240,245,250), and a control element (280). The hydraulic cylinder (210) is coupled between a first portion (120) of the work vehicle (100) and the appendage (126) and includes a first chamber (225), a second chamber (230), and a piston (215). The first and second valve assemblies (235,240,245,250) respectively govern whether hydraulic fluid is provided from a pump (255) to, or to a tank (260) from, the first (225) and second (230) chambers. The control element (280) automatically causes a status of the second valve (235,240) assembly to repeatedly alternate with time so that the vibration occurs at the piston (215) and is in turn provided to the appendage (126).

    摘要翻译: 公开了一种用于产生工作车辆(100)的附件(126)的振动的装置和方法。 该装置包括液压缸(210),第一和第二阀组件(235,240,245,250)和控制元件(280)。 液压缸(210)联接在作业车辆(100)的第一部分(120)和附属物(126)之间并且包括第一室(225),第二室(230)和活塞(215) 。 第一和第二阀组件(235,240,245,250)分别控制液压流体是否从第一(225)和第二(230)室从泵(255)提供到罐(260)。 控制元件(280)自动地引起第二阀(235,240)组件的状态与时间重复交替,使得振动发生在活塞(215)处并且又提供给附件(126)。