Hydraulic force regulating system
    2.
    发明公开
    Hydraulic force regulating system 失效
    液压牛皮纸系列

    公开(公告)号:EP0713818A1

    公开(公告)日:1996-05-29

    申请号:EP95118465.4

    申请日:1995-11-23

    IPC分类号: B61F5/24

    CPC分类号: B61F5/245

    摘要: A hydraulic force regulating system (10') presenting a hydraulic actuator (11) including a cylinder (15) housing a piston (16) movable in relation to the cylinder; a hydraulic circuit (12-14) in turn presenting a servovalve (12) for controlling supply to the actuator; a first force regulating loop (26-29) which, on the basis of the difference between the actual force (F m ) generated by the piston (16) and the required nominal force (F r ), regulates the current (I) supplied to the servovalve (12); and a second regulating loop (35) which, on the basis of the speed (V) of the piston (16) in relation to the cylinder (15), generates an additional current (I₁) for the servovalve (12), to achieve a substantially elastic performance of the hydraulic system (10'). More specifically, the additional current (I₁) opens the servovalve (12) by the exact amount required to permit the passage, in the presence of a desired pressure difference Δp, of the flow AV (product of piston area A and speed) produced by the movement of the piston (16) in relation to the cylinder (15).

    摘要翻译: 液压力调节系统(10')具有液压致动器(11),该液压致动器(11)包括容纳可相对于气缸移动的活塞(16)的气缸(15) 液压回路(12-14)又具有用于控制对致动器的供给的伺服阀(12); 第一力调节回路(26-29),其基于由活塞(16)产生的实际力(Fm)与所需的标称力(Fr)之间的差异来调节提供给 伺服阀(12); 以及第二调节回路(35),其基于所述活塞(16)相对于所述气缸(15)的速度(V)产生用于所述伺服阀(12)的附加电流(I1),以实现 液压系统(10')的基本上弹性的性能。 更具体地,额外的电流(I1)在产生的流量AV(活塞面积A和速度的乘积)的所需压力差ΔΔP存在时允许通过所需的精确量打开伺服阀(12) 通过活塞(16)相对于气缸(15)的运动。

    Railroad car body rotation control system
    4.
    发明公开
    Railroad car body rotation control system 失效
    Steigersystemfürdie Neigung eines Eisenbahnwagenkastens

    公开(公告)号:EP0713817A1

    公开(公告)日:1996-05-29

    申请号:EP95118464.7

    申请日:1995-11-23

    IPC分类号: B61F5/22

    CPC分类号: B61F5/22

    摘要: A control system wherein an electronic control unit (14) generates a drive signal for a hydraulic device (13l, 13r, 15) for rotating the body (11) of a railroad car (3) about a longitudinal axis (G) of the car to reduce the non-compensated transverse acceleration to which the passengers are subjected. The control system presents a differentiating circuit (37) and a proportional circuit (31), which are supplied with an error signal (ϑe) equal to the difference between a reference signal (ϑc) and a feedback signal (ϑz) indicating the actual tilt angle of the body. The outputs of the differentiating circuit (37) and the proportional circuit (31) are added to generate a drive signal for driving the hydraulic device (13l, 13r, 15); and the differentiating circuit (37) presents a derivative gain (Gd) which is a function of the derivative in time (d|ϑe|/dt) of the error signal (ϑe) modulus.

    摘要翻译: 一种控制系统,其中电子控制单元(14)产生用于使铁路车辆(3)的主体(11)围绕轿厢的纵向轴线(G)旋转的液压装置(13l,13r,15)的驱动信号 以减少乘客遭受的无补偿横向加速度。 控制系统呈现一个微分电路(37)和比例电路(31),它们被提供有等于参考信号(θc)和反馈信号(θz)之间的差的信号(θe) 身体的实际倾斜角度。 微分电路(37)和比例电路(31)的输出相加以产生用于驱动液压装置(13l,13r,15)的驱动信号。 并且微分电路(37)呈现导数增益(Gd),其是误差信号(θe)模量的时间导数(dθθe/ dt)的函数。

    Low-load start-up hydraulic system for controlling rotation of a railroad car body
    5.
    发明公开
    Low-load start-up hydraulic system for controlling rotation of a railroad car body 失效
    与启动液压系统低负载下控制铁路车体的倾斜

    公开(公告)号:EP0713815A1

    公开(公告)日:1996-05-29

    申请号:EP95118462.1

    申请日:1995-11-23

    IPC分类号: B61F5/22

    CPC分类号: B61F5/22

    摘要: A hydraulic system (1) for controlling rotation of a railroad car body (2), and presenting a motor pump assembly (8) connected to a hydraulic fluid tank (7) and to a supply line (14); a number of hydraulic actuators (3a, 3b, 4a, 4b) for exerting mechanical force on the body (2) to rotate it; a solenoid valve (26) for selectively connecting the hydraulic actuators (3a, 3b, 4a, 4b) to the supply line (14) or to a drain (29) in response to electric control signals; and a bypass start valve (64) for depressurizing the supply line (14) during start-up of the motor pump assembly (8); the bypass start valve (64) being a purely hydraulically operated, normally-open valve, which switches automatically when supply from the motor pump assembly (8) reaches a predetermined threshold value.

    摘要翻译: 用于控制铁路车辆主体(2)的旋转,并且呈现出马达泵组件的液压系统(1)(8)连接到工作油箱(7)和到电源线(14); 多个液压致动器(3A,3B,4A,4B),用于在所述主体上施加机械力(2),以将其旋转; 用于选择性地连接所述液压致动器的电磁阀(26)(3A,3B,4A,4B)至供应管线(14)或响应于电控制信号的漏极(29); 和用于在马达泵组件(8)的起动减压供给管线(14)的旁通阀开始(64); 旁通起动阀(64)是一个纯粹的液压操作的常开型阀,其中,当从马达泵组件(8)供给达到预定的阈值自动切换。

    Hydraulic system for controlling rotation of a railroad car body and featuring an actuator depressurizing device
    8.
    发明公开
    Hydraulic system for controlling rotation of a railroad car body and featuring an actuator depressurizing device 失效
    用于与设备控制铁路车体的倾斜进行调整的驱动压力释放的液压系统

    公开(公告)号:EP0713816A1

    公开(公告)日:1996-05-29

    申请号:EP95118463.9

    申请日:1995-11-23

    IPC分类号: B61F5/22

    CPC分类号: B61F5/22

    摘要: A hydraulic system (1) for controlling rotation of a railroad car body (2), and presenting a motor pump assembly (8) connected to a hydraulic fluid tank (7) and to a supply line (14); a number of hydraulic actuators (3a, 3b, 4a, 4b) for exerting mechanical force on the body (2) to rotate it; a solenoid valve (26) for selectively connecting the hydraulic actuators (3a, 3b, 4a, 4b) to the supply line (14) and to a drain (29) in response to electric control signals; and a device (61) for depressurizing the actuators (3a, 3b, 4a, 4b) and disabling the system at the end of the duty period or in the event of an emergency. The device (61) presents two hydraulically driven, normally-open disabling valves (47) interposed between respective pairs of actuators (3a, 4a; 3b, 4b) and the drain (29), and presenting respective drive lines (59) connected to the supply line (14); and an electric distributor (46) for depressurizing the drive lines (59).

    摘要翻译: 用于控制铁路车辆主体(2)的旋转,并且呈现出马达泵组件的液压系统(1)(8)连接到工作油箱(7)和到电源线(14); 多个液压致动器(3A,3B,4A,4B),用于在所述主体上施加机械力(2),以将其旋转; 用于选择性地连接所述液压致动器的电磁阀(26)(3A,3B,4A,4B)至供应管线(14)和响应于电控制信号的漏极(29); 和用于在工作周期结束时或在紧急情况下减压致动器(3A,3B,4A,4B)和禁用系统的装置(61)。 的装置(61)提供了两个液压驱动常开禁止致动器的respectivement对之间的阀(47);连接到和漏极(29),以及呈现respectivement动力传动系统(59)(3α,4α3B,4B) 供应管线(14); 和电动分配器(46),用于减压的动力传动系统(59)。