Angular displacement encoder with two magnetic tracks

    公开(公告)号:US07119535B2

    公开(公告)日:2006-10-10

    申请号:US10518847

    申请日:2003-06-13

    IPC分类号: G01B7/30

    CPC分类号: G01D5/2451 G01D5/145

    摘要: What is described is a configuration for determining the position of a body along a movement direction, wherein the body is in the form of a magnetized encoder with two magnetic tracks extending, on one surface of the body, along the movement direction, at least essentially in parallel with one another, wherein, at specified intervals along the movement direction, a first of the magnetic tracks exhibits magnetized sections in which the magnetic north poles are aligned so as to be at least largely coincident in a magnetization direction that is essentially at right-angles to the surface of the body, and wherein, at intervals specified to coincide with the above-mentioned intervals along the movement coordinate, the second of the magnetic tracks exhibits magnetized sections in which the magnetic south poles are aligned so as to be at least largely coincident in the said magnetization direction, and wherein, in each case, a magnetized section of one of the magnetic tracks is located at least largely centrally in relation to a gap between two magnetized sections of the other magnetic track, with a magnetoresistive sensor, in the form of an angle sensor, which is arranged above the magnetic tracks, for determining the directions of magnetic fields brought about by the magnetized sections of the magnetic tracks in an area extending along the movement coordinate, essentially in parallel with the surface of the body. By virtue of the invention, a simple configuration for the precise determination of the position of a body along a movement direction is created, wherein this configuration does not necessarily have to be affixed centrally upstream of the head of the body.

    Angular displacement encoder with two magnetic tracks
    2.
    发明申请
    Angular displacement encoder with two magnetic tracks 有权
    具有两个磁道的角位移编码器

    公开(公告)号:US20060055397A1

    公开(公告)日:2006-03-16

    申请号:US10518847

    申请日:2003-06-13

    IPC分类号: G01B7/30

    CPC分类号: G01D5/2451 G01D5/145

    摘要: What is described is a configuration for determining the position of a body along a movement direction, wherein the body is in the form of a magnetized encoder with two magnetic tracks extending, on one surface of the body, along the movement direction, at least essentially in parallel with one another, wherein, at specified intervals along the movement direction, a first of the magnetic tracks exhibits magnetized sections in which the magnetic north poles are aligned so as to be at least largely coincident in a magnetization direction that is essentially at right-angles to the surface of the body, and wherein, at intervals specified to coincide with the above-mentioned intervals along the movement coordinate, the second of the magnetic tracks exhibits magnetized sections in which the magnetic south poles are aligned so as to be at least largely coincident in the said magnetization direction, and wherein, in each case, a magnetized section of one of the magnetic tracks is located at least largely centrally in relation to a gap between two magnetized sections of the other magnetic track, with a magnetoresistive sensor, in the form of an angle sensor, which is arranged above the magnetic tracks, for determining the directions of magnetic fields brought about by the magnetized sections of the magnetic tracks in an area extending along the movement coordinate, essentially in parallel with the surface of the body. By virtue of the invention, a simple configuration for the precise determination of the position of a body along a movement direction is created, wherein this configuration does not necessarily have to be affixed centrally upstream of the head of the body.

    摘要翻译: 描述的是用于确定身体沿着运动方向的位置的配置,其中身体是磁化编码器的形式,其具有两个磁道,其在身体的一个表面上沿运动方向延伸,至少基本上 彼此平行,其中沿着移动方向以规定的间隔,第一磁轨表现出磁化部分,其中磁性北极被排列成在基本上在右侧的磁化方向上至少大体上一致 与身体的表面相交,并且其中,以与运动坐标的上述间隔相一致的间隔,第二磁轨表现出磁化部分,其中磁性南极被排列成为 在所述磁化方向上最不重要地一致,并且其中,在每种情况下,其中一个磁迹的磁化部分位于 相对于另一个磁道的两个磁化部分之间的间隙大致集中在具有磁阻传感器的角度传感器的形式,该角度传感器布置在磁迹的上方,用于确定由磁场引起的磁场的方向 沿着运动坐标延伸的区域中的磁迹的磁化部分基本上与主体的表面平行。 根据本发明,产生了用于精确地确定身体沿运动方向的位置的简单构造,其中该构造不一定必须固定在身体的头部上游的中心位置。