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Sensor System Including a Magnetized Shaft

  • US 20100077869A1
  • Filed: 08/25/2009
  • Published: 04/01/2010
  • Est. Priority Date: 10/21/2005
  • Status: Active Grant
First Claim
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1. A sensor comprising:

  • a shaft formed from a magnetorestrictive material and having at least one magnetized active region in an axial extent of said shaft, said at least one active region having at least partially opposing magnetic polarizations in a radial cross-section taken in said axial extent; and

    only one magnetic sensor positioned adjacent said active region and configured to sense each of said opposing magnetic polarizations and provide an output in response to said opposing magnetic polarizations, said output varying with the rotational angle of said shaft and a peak-to-peak amplitude of said output being representative of a torque applied to said shaft.

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