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Torque ripple sensor and mitigation mechanism

  • US 20040079173A1
  • Filed: 10/28/2002
  • Published: 04/29/2004
  • Est. Priority Date: 10/28/2002
  • Status: Active Grant
First Claim
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1. An apparatus for sensing fluctuations in torque from a permanent magnet machine, the permanent magnet machine being contained in a housing, the apparatus comprising:

  • a piezoelectric sensor coupled to said permanent magnet machine to receive transmitted vibration produced by the fluctuations of the permanent magnet machine, said piezoelectric sensor producing a sensor signal corresponding to an amplitude of said vibration.

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