Hydraulic circuit for active suspension system
    1.
    发明公开
    Hydraulic circuit for active suspension system 有权
    Hydraulikkreisfüraktives Federungssystem

    公开(公告)号:EP1186467A1

    公开(公告)日:2002-03-13

    申请号:EP01120464.1

    申请日:2001-08-28

    申请人: DEERE & COMPANY

    摘要: An active suspension system for supporting a mass, such as a seat (12) on a base (16) of a vehicle, includes a hydraulic actuator (18) coupled between the seat (12) and the base (16), an pneumatic off-load device between the seat and the base (16), and a control system which actively controls the hydraulic actuator (18) and which controls the off-load member. The control system actively controls the hydraulic actuator (18) as a function of a seat position error signal. A flow control valve (70) controls the extension and retraction of the actuator (18). A proportional pressure control valve (44) is connected between a primary pressure reducing valve (42) and an inlet (72) of the flow control valve (70). During start up, the pressure control valve (44) prevents the supply of pressurized fluid to the flow control valve (70) until the flow control valve (70) is driven to its center or null position. During an electrical power failure, the solenoid operated pressure control valve (44) is spring driven to a shut off position preventing communication of pressure to the flow control valve (70).

    摘要翻译: 一种用于支撑物体的主动悬挂系统,例如车辆的底座(16)上的座(12),包括联接在座椅(12)和底座(16)之间的液压致动器(18),气动关闭 在座椅和基座(16)之间的加载装置以及主动地控制液压致动器(18)并控制卸载构件的控制系统。 控制系统主动地控制液压致动器(18)作为座椅位置误差信号的函数。 流量控制阀(70)控制致动器(18)的伸缩。 比例压力控制阀(44)连接在主减压阀(42)和流量控制阀(70)的入口(72)之间。 在启动期间,压力控制阀(44)防止向流量控制阀(70)供应加压流体,直到流量控制阀(70)被驱动到其中心位置或零位置为止。 在电力故障期间,电磁操作压力控制阀(44)被弹簧驱动到关闭位置,从而防止与流量控制阀(70)的压力传递。

    Active suspension with offload adjustment
    4.
    发明公开
    Active suspension with offload adjustment 有权
    Antung eines Entlastungselementes的AktivesAufhängungssystemmit

    公开(公告)号:EP1188608A1

    公开(公告)日:2002-03-20

    申请号:EP01120465.8

    申请日:2001-08-28

    申请人: DEERE & COMPANY

    摘要: An active suspension system for supporting a mass, such as a seat (12) on a base (16) of a vehicle includes a hydraulic actuator (18) coupled between the seat (12) and the base (16), an pneumatic off-load device (20) between the seat (12) and the base (16), and a control system which actively controls the hydraulic actuator (18) and which controls the off-load member (20). The control system actively controls the hydraulic actuator (18) as a function of a seat position error signal. The control system also controls the off-load member (20) as a function of a signal used in the active control of the actuator (18). A compressor (28) and a vent (30) are coupled to the pneumatic device (20) for controlling pressurization thereof. The control system comprises an electronic control unit (36) which repeatedly executes a control algorithm at a predetermined rate, and which controls the operational status of the compressor (28) and the vent (30) as a function of the position error signal and the predetermined rate.

    摘要翻译: 一种用于支撑物体的主动悬架系统,例如在车辆的基座(16)上的座椅(12)包括联接在座椅(12)和基座(16)之间的液压致动器(18) 在座椅(12)和基座(16)之间的负载装置(20)和主动地控制液压致动器(18)并控制卸载构件(20)的控制系统。 控制系统主动地控制液压致动器(18)作为座椅位置误差信号的函数。 控制系统还根据在致动器(18)的主动控制中使用的信号来控制卸载构件(20)。 压缩机(28)和通风口(30)联接到气动装置(20),用于控制其加压。 控制系统包括电子控制单元(36),其以预定速率反复执行控制算法,并且根据位置误差信号和压缩机(28)和通风口(30)的操作状态进行控制, 预定费率。