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Electronics for Coriolis force and other sensors

  • US 5,604,309 A
  • Filed: 05/24/1995
  • Issued: 02/18/1997
  • Est. Priority Date: 03/28/1994
  • Status: Expired due to Term
First Claim
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1. A Coriolis force sensor system comprising:

  • an input transducer receiving a drive voltage signal and converting said drive voltage signal into a force signal having a nonlinear relationship with respect to said drive voltage signal;

    a sensor responsive to said force signal from said input transducer and Coriolis forces induced by an inertial input for providing an inertial sense signal having a predetermined frequency and an amplitude related to said inertial input and a force sense signal having said predetermined frequency and an amplitude related to said force signal;

    an output transducer for converting said force sense signal into a feedback voltage signal; and

    a frequency translation circuit, disposed in a feedback relationship between said output transducer and said input transducer, for suppressing a component of said feedback voltage signal at said predetermined frequency to provide said drive voltage signal.

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