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    • 5. 发明公开
    • Electrohydraulic system with distributed control
    • 电动液压系统。
    • EP0240965A1
    • 1987-10-14
    • EP87105043.1
    • 1987-04-04
    • Vickers Incorporated
    • Blatter, AlbertCherry, Jeffrey P.Chipp, Ronald E.Kessler, James A.Leemhuis, Richard S.Miller, John A.Rode, Melvin A.Wen, Gene Y.
    • G05B19/403F15B9/03G05D3/18
    • G05B19/414G05B2219/33142G05B2219/33273G05B2219/34215G05B2219/34466G05B2219/37291G05B2219/41301G05B2219/42237
    • An electrohydraulic system includes a plurality of electrohydraulic devices (22a-22n) individually controlled by on-board microprocessor-based control electronics (56, 58, 60). Each individual device controller (26) is connected to and addressable by a master controller (36) for coordinating operation of the various devices. An electrohydraulic servo valve assembly (34) includes a hydraulic manifold (42) having a valve spool (44) variably positionable therein under control of a torque motor (49). A microprocessor-based controller (56, 58, 60) is connected to the torque motor (49) and is mounted on the manifold (42) by a cover (40) which encloses and protects both the controller (26) and the torque motor (36). A watchdog timer (110) in the microprocessor-based controller (56, 58, 60) monitors pulsewidth modulated signals to the torque motor (49) for terminating operation in the event of signal loss. In a preferred embodiment of the invention, the servo valve assembly (34) is coupled to a linear actuator (24) which has its position monitored by an electroacoustic transducer (80). Improved electronics (56, 92) couple the transducer (80) to the control microprocessor (100).
    • 电动液压系统包括由基于微处理器的控制电子装置(56,​​58,60)单独控制的多个电动液压装置(22a-22n)。 每个单独的设备控制器(26)被主控制器(36)连接并可寻址,用于协调各种设备的操作。 电动液压伺服阀组件(34)包括液压歧管(42),该液压歧管具有在扭矩马达(49)的控制下可变地定位的阀芯(44)。 基于微处理器的控制器(56,58,60)连接到扭矩马达(49),并通过盖(40)安装在歧管(42)上,盖(40)封闭并保护控制器(26)和扭矩马达 (36)。 基于微处理器的控制器(56,58,60)中的看门狗定时器(110)监视到扭矩马达(49)的脉宽调制信号,以在信号丢失的情况下终止操作。 在本发明的优选实施例中,伺服阀组件(34)联接到线性致动器(24),该致动器的位置由电声换能器(80)监控。 改进的电子设备(56,92)将换能器(80)耦合到控制微处理器(100)。