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Torque sensor and motor-driven power steering apparatus using thereof

  • US 20040159488A1
  • Filed: 02/12/2004
  • Published: 08/19/2004
  • Est. Priority Date: 07/25/2002
  • Status: Abandoned Application
First Claim
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1. A motor-driven power steering apparatus which transmits rotation of a steering wheel to wheels through a rotational axis and detects at least torque of said rotational axis so that a motor for assisting operation of the steering wheel is controlled on the basis of the detected signal, wherein said detection of said torque is performed by providing a plurality of magnetic tracks each having a phase difference in a plurality of magnetic drums provided in two rotational axes coupled through a torsion bar and by means of a contactless magnetic encoder system.

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