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Sensor device for an electric machine

  • US 8,063,628 B2
  • Filed: 02/21/2007
  • Issued: 11/22/2011
  • Est. Priority Date: 04/07/2006
  • Status: Expired due to Fees
First Claim
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1. A sensor device for detecting a position or a movement relative to a machine component of an electric machine having pole teeth, the sensor comprising:

  • a U-shaped yoke section having opposing free ends, anda sensor arranged in or on the yoke section for measuring a magnetic variable, andtwo magnets having opposite polarity arranged on each of the opposing free ends of the yoke section, with a magnet of one polarity disposed on one end of the yoke section in cooperation with a magnet of opposite polarity on the other end of the yoke section producing in the yoke section a magnetic flux depending on a position of the two magnets in relation to an opposing pole tooth, with a flux direction in the yoke section depending on the polarity of the two cooperating magnets that oppose the opposing pole teeth.

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