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Method for monitoring oscillation characteristics in a coriolis, flow, measuring device

  • US 8,950,274 B2
  • Filed: 11/14/2012
  • Issued: 02/10/2015
  • Est. Priority Date: 11/15/2011
  • Status: Active Grant
First Claim
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1. A method for monitoring oscillation characteristics in a Coriolis, flow measuring device, which is insertable into a pipeline, said Coriolis, flow measuring device including an oscillatory system excitable to execute mechanical oscillations, wherein the oscillatory system has at least one measuring tube, through which a medium can flow, said method comprising:

  • exciting the oscillatory system by at least one exciter to execute mechanical oscillations according to an excitation input signal, which exhibits temporary signal modulations occurring in time intervals;

    registering by sensor at least one response variable of the caused mechanical oscillations of the oscillatory system;

    simulating the excited oscillatory system with a digital model, which includes at least one fittable parameter; and

    ascertaining whether a corresponding limit value is exceeded by the at least one, interatively ascertained parameter value for the at least one, fittable parameter or by at least one variable derived from the at least one, interatively ascertained parameter value;

    wherein said simulating the excited oscillatory system with a digital model includes;

    exciting the digital model in the same manner as the oscillatory system;

    calculating a simulation response variable of the simulateoscillations according to the digital model; and

    ,performed over a plurality of signal modulations, iterative conforming of the at least one, fittable parameter in such a manner that the simulation response variable iteratively approaches the response variable.

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