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    • 9. 发明申请
    • SYSTEM FOR DETERMINING THE POSITION OF A PISTON ALONG ITS PATH OF TRAVEL FOR A FLUID-DYNAMIC ACTUATOR
    • 用于确定流体动力执行器行程路线的活塞位置的系统
    • WO2009053812A2
    • 2009-04-30
    • PCT/IB2008002811
    • 2008-10-21
    • A M A S P ACANI PAOLOREGGIANI WAINER
    • CANI PAOLOREGGIANI WAINER
    • F15B15/2846F15B15/2876G01B11/024G01B11/14
    • A system (13) for determining the position of a piston (3) along its path of travel (9) in a cylinder (2) of a fluid-dynamic actuator (1), wherein the surface of the rod (5) of the piston (3) is provided with first grooves (14) machined on respective sections (15) of the rod (5), so that projections of the first grooves (14) onto a first plane parallel to the rod axis (6) define segments (14a) arranged obliquely with respect to the axis (6), and second grooves (17) extending parallel to the axis (6) for respective lengths such that a respective number of second grooves (17) run across each section (15), optical sensors (19, 21) detect the presence of second grooves (17) through a second plane (20) transversal to the axis (6) and a displacement (32) of segments (14a) along a line (31) coplanar with the second plane (20) due to a movement of the piston (3), and a processing unit (22) counts the detected second grooves (17) and determines the position of the piston (3) as a function of the count of second grooves (17) and the displacement (32) of segments (14a).
    • 一种用于确定活塞(3)沿着其流体动力致动器(1)的气缸(2)中的行进路径(9)的位置的系统(13),其中,所述杆(5)的表面 活塞(3)设置有加工在杆(5)的相应部分(15)上的第一凹槽(14),使得第一凹槽(14)在与杆轴线(6)平行的第一平面上的凸起限定了段 (14a),相对于轴线(6)倾斜布置;以及第二凹槽(17),其平行于所述轴线(6)延伸各自的长度,使得相应数量的第二凹槽(17)穿过每个部分(15), 光学传感器(19,21)通过横向于轴线(6)的第二平面(20)和沿着与所述轴线(6)共面的线(31)的段(14a)的位移(32)来检测第二凹槽(17)的存在, 第二平面(20),并且处理单元(22)对检测到的第二凹槽(17)进行计数,并确定活塞(3)的位置作为第二平面 e计数第二凹槽(17)和段(14a)的位移(32)。