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Microelectromechanical gyroscope with open loop reading device and control method

  • US 8,800,369 B2
  • Filed: 09/23/2011
  • Issued: 08/12/2014
  • Est. Priority Date: 02/13/2007
  • Status: Active Grant
First Claim
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1. A circuit for use with a gyroscope having a first mass and a second mass coupled to the first mass to oscillate in response to the first mass and in response to movement of the gyroscope, the circuit comprising:

  • a driving circuit coupled to the first mass to form a feedback control loop and to maintain the first mass in oscillation at a resonance frequency;

    a reading device coupled to the second mass and structured to detect displacements of the second mass; and

    a read signal generator structured to supply to the second mass at least one read signal having the form of a square-wave signal of amplitude that sinusoidally varies with the resonance frequency.

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