发明授权
US06509732B1 Enhanced methods for sensing positions of an actuator moving longitudinally 有权
用于感测致动器纵向移动位置的增强方法

  • 专利标题: Enhanced methods for sensing positions of an actuator moving longitudinally
  • 专利标题(中): 用于感测致动器纵向移动位置的增强方法
  • 申请号: US09561671
    申请日: 2000-05-01
  • 公开(公告)号: US06509732B1
    公开(公告)日: 2003-01-21
  • 发明人: Michael L. RhodesHoward B. French
  • 申请人: Michael L. RhodesHoward B. French
  • 主分类号: G01R33025
  • IPC分类号: G01R33025
Enhanced methods for sensing positions of an actuator moving longitudinally
摘要:
Systems and methods are discussed that detect the position of an actuator. One aspect of the present invention includes a system to detect a position of an actuator. The system includes a magnetic source coupled to the actuator radiating a field, at least two sensors to generate a response based on angles of the field, and an analyzer receptive to the response to produce an enhanced position of the magnetic source. Such analysis occurs in the presence of undesired effects arising from misalignment of the at least two sensors. Another aspect of the present invention includes a method for detecting a position of an actuator. The method includes interpolating a response of at least two sensors to form a quantity. The quantity is indicative of a position of a magnetic source coupled to the actuator. The method further includes adjusting the quantity by selecting one of two compensation techniques. One compensation technique is based on maximum slopes of the response curve. Another compensation technique is based on minimum separation of a cubic fit of the response curve.
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