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    • 4. 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)。
    • 5. 发明公开
    • Torque motor with symmetrical air gaps
    • 扭矩 - 电机mit对称性Luftspalt。
    • EP0448028A1
    • 1991-09-25
    • EP91104202.6
    • 1991-03-19
    • VICKERS INCORPORATED
    • Blatter, AlbertDavis, Robert E.
    • F15B13/043H02K26/00
    • F15B13/043Y10T137/2278Y10T137/2409Y10T137/86598
    • An electrohydraulic servovalve comprising a torque motor (10) which receives an electrical signal and positions a flapper (11) of a spring tube and flapper subassembly (11, 21) between a pair of opposed nozzles (12) to control a spool valve (16) and includes a feedback spring (14) connected to the flapper (11) and to the spool (15) of the spool valve (16). A method of obtaining torque motor air gap symmetry is provided which comprises forming the pole piece/magnet subassembly (17, 18) to provide a desired total pole air gap on both ends of the armature (20), forming the armature ends so that they are equal to the total pole gap minus twice the desired nominal air gap, assembling the torque motor (10) before attaching the spring tube and flapper subassembly (11, 21), positioning the spring tube and flapper subassembly and the pole piece/magnets in a relative position to one another, providing spacers (36) between the lower edges of the armature (20) and the gap of the pole pieces, providing wedges (35) between the upper pole piece, providing a joint A between the tube (21) and the armature (20) by a hardenable material to bond the armature and the spring tube, and permitting the joint to harden and set.
    • 一种电动液压伺服阀,包括扭矩电动机(10),所述扭矩电动机(10)接收电信号,并将弹簧管和挡板组件(11,21)的挡板(11)定位在一对相对的喷嘴(12)之间,以控制滑阀(16) ),并且包括连接到挡板(11)和滑阀(16)的阀芯(15)的反馈弹簧(14)。 提供了一种获得扭矩电动机气隙对称性的方法,其包括形成极靴/磁体子组件(17,18)以在电枢(20)的两端提供期望的总极气隙,形成电枢端部,使得它们 等于总磁极间隙减去所需额定气隙的两倍,在安装弹簧管和挡板组件(11,21)之前组装扭矩电机(10),将弹簧管和挡板组件和极片/磁体定位在 彼此相对的位置,在电枢(20)的下边缘和极片的间隙之间提供间隔件(36),在上极片之间提供楔形物(35),从而在管(21)之间提供接头 )和电枢(20)通过可硬化材料结合电枢和弹簧管,并允许接头硬化和固化。