发明公开
EP0356826A2 Speed sensor pickup assembly with slotted magnet 失效
Geschwindigkeitssensor-Aufnahmevorrichtung mit genutetem Magnet。

  • 专利标题: Speed sensor pickup assembly with slotted magnet
  • 专利标题(中): Geschwindigkeitssensor-Aufnahmevorrichtung mit genutetem Magnet。
  • 申请号: EP89115210.0
    申请日: 1989-08-18
  • 公开(公告)号: EP0356826A2
    公开(公告)日: 1990-03-07
  • 发明人: Gee, Thomas Arthur
  • 申请人: EATON CORPORATION
  • 申请人地址: Eaton Center Cleveland, Ohio 44114 US
  • 专利权人: EATON CORPORATION
  • 当前专利权人: EATON CORPORATION
  • 当前专利权人地址: Eaton Center Cleveland, Ohio 44114 US
  • 代理机构: Rüger, Rudolf, Dr.-Ing.
  • 优先权: US237914 19880829; US262550 19881025
  • 主分类号: B60T8/32
  • IPC分类号: B60T8/32 G01P3/488
Speed sensor pickup assembly with slotted magnet
摘要:
A dual speed sensor pickup assembly (140) for sensing the rotational velocity of two independently rotatable, closely axially spaced exciter rotors (116 and 118) is provided. The pickup assembly includes two speed sensor assemblies (136 and 138) each including a pole piece (152,160) having a longitudinal axis (152a, 160a) with the longitudinal axes skewed relative to one another but radial relative to the common axes of rotation (24) of the exciter rotors. Each speed sensor includes a permanent magnet (154,162) disposed between an end of the pole piece (152,160) and having a face divided into first and second surfaces (154a,154b and 162a,162b) by a slot (154c,162c) therein. In one embodiment a primary coil (156,164) and a secondary or anti-cross talk coil (158,166) surrounds the pole piece of each sensor (136,138), and each secondary coil is conductively connected to the primary coil of the other sensor. In another embodiment, an electronic circuit (176) is provided for producing anti-cross talk signals which are added to the speed sensor signals.
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