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    • 7. 发明授权
    • System and method of perpendicularly magnetizing position information in a magnetically hard layer of a moving component
    • 在运动部件的磁性硬层中垂直磁化位置信息的系统和方法
    • US07755350B2
    • 2010-07-13
    • US12252342
    • 2008-10-15
    • Donald C. Arns, Jr.Pablo Garcia
    • Donald C. Arns, Jr.Pablo Garcia
    • G01B7/14
    • F15B15/2861F15B15/2846G01D5/00G01D5/24423G01D5/24438G01D5/24447G01D5/24476
    • A position-sensing system magnetically senses the position of a piston rod moving with respect to a cylinder. A magnetically hard layer on the piston rod provides a recording medium. Information is perpendicularly magnetized in regions of the magnetically hard layer. These regions provide an encoding scheme for determining the position of the piston rod. Magnetic-field sensors are positioned over redundant tracks of magnetically recorded regions. Each magnetic-field sensor positioned over a given track senses the same magnetized regions while the piston rod moves with respect to the cylinder. Other magnetic-field sensors can sense ambient fields for use in performing common-mode rejection. A write head can dynamically repair damaged or erased regions detected by the magnetic-field sensors. Energized by a battery-backup power source, the magnetic-field sensors and associated circuitry can continue to track movement of the piston rod when the machinery is off.
    • 位置感测系统磁性地感测相对于气缸移动的活塞杆的位置。 活塞杆上的磁性硬层提供了一种记录介质。 信息在磁性硬层的区域中垂直磁化。 这些区域提供用于确定活塞杆的位置的编码方案。 磁场传感器位于磁记录区域的冗余轨道上。 位于给定轨道上方的每个磁场传感器在活塞杆相对于气缸移动时感测相同的磁化区域。 其他磁场传感器可以感测用于执行共模抑制的环境场。 写头可以动态修复由磁场传感器检测到的损坏或擦除的区域。 由电池备用电源供电,当机械关闭时,磁场传感器和相关电路可以继续跟踪活塞杆的运动。
    • 8. 发明申请
    • SYSTEM AND METHOD OF MAGNETICALLY SENSING POSITION OF A MOVING COMPONENT
    • 移动组件的磁感测位置的系统和方法
    • US20070262770A1
    • 2007-11-15
    • US11782005
    • 2007-07-24
    • Donald ArnsPablo Garcia
    • Donald ArnsPablo Garcia
    • G01B7/14
    • F15B15/2861F15B15/2846G01D5/00G01D5/24423G01D5/24438G01D5/24447G01D5/24476
    • A position-sensing system magnetically senses the position of a first component moving with respect to a second component. A magnetically hard layer on the first component provides a recording medium. Information is magnetically recorded in regions of the magnetically hard layer. These regions provide a relative encoding scheme for determining the position of the first component. Magnetic-field sensors are positioned over redundant tracks of magnetically recorded regions. Each magnetic-field sensor positioned over a given track senses the same magnetized regions while the first component moves with respect to the second component. Other magnetic-field sensors can sense ambient fields for use in performing common-mode rejection. A write head can dynamically repair damaged or erased regions detected by the magnetic-field sensors. Energized by a battery-backup power source, the magnetic-field sensors and associated circuitry can continue to track movement of the first component when the machinery is off.
    • 位置感测系统磁性地感测相对于第二部件移动的第一部件的位置。 第一组件上的磁性硬层提供记录介质。 信息被磁记录在磁性硬层的区域中。 这些区域提供用于确定第一部件的位置的相对编码方案。 磁场传感器位于磁记录区域的冗余轨道上。 位于给定轨道上方的每个磁场传感器在第一部件相对于第二部件移动时感测相同的磁化区域。 其他磁场传感器可以感测用于执行共模抑制的环境场。 写头可以动态修复由磁场传感器检测到的损坏或擦除的区域。 由电池备用电源供电,当机械关闭时,磁场传感器和相关电路可以继续跟踪第一部件的运动。