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    • 1. 发明申请
    • IMPROVEMENTS IN OR RELATING TO POSITION CONTROL
    • 改善或与位置控制相关
    • WO2003093682A1
    • 2003-11-13
    • PCT/GB2003/001940
    • 2003-05-02
    • IMI VISION LIMITEDBHIMANI, Alan, MelvynNIGHY, Richard, JohnMORGAN, Peter, NeilFOX, Philip, John
    • BHIMANI, Alan, MelvynNIGHY, Richard, JohnMORGAN, Peter, NeilFOX, Philip, John
    • F15B15/28
    • F15B15/2853F15B15/2892
    • Apparatus comprising a cylinder (2) having a piston (3) slidable in the cylinder (2), and a position measurement device (13) to determine the position of the piston (3). The position measurement device (13) is arranged on a side wall, of the cylinder (2) and is magnetically coupled to the piston (3) through the side wall. In one embodiment, the position measurement device (13) is a potentiometer having a fixed part (14) and a movable part (15). The fixed part (14) comprises elongate resistive and conductive elements arranged in spaced, parallel relationship along the length of the cylinder (2), and the movable part comprises a follower (15) to provide electrical contact between the resistive and conductive elements. The follower (15) is magnetically coupled to the piston (3) and an indication of the position of the piston (3) is provided by the electrical contact between the resistive and conductive elements as the follower (15) moves therealong in response to movement of the piston (3).
    • 装置包括具有可在气缸(2)中滑动的活塞(3)的气缸(2)和用于确定活塞(3)的位置的位置测量装置(13)。 位置测量装置(13)布置在气缸(2)的侧壁上,并且通过侧壁磁性联接到活塞(3)。 在一个实施例中,位置测量装置(13)是具有固定部分(14)和可移动部分(15)的电位计。 固定部分(14)包括沿着气缸(2)的长度以间隔开的平行关系布置的细长电阻和导电元件,并且可移动部分包括从动件(15),以在电阻和导电元件之间提供电接触。 从动件(15)磁耦合到活塞(3),并且随着随动件(15)响应于运动而沿其移动而通过电阻和导电元件之间的电接触来提供活塞(3)的位置的指示 的活塞(3)。