Measuring and testing – Vibration – Sensing apparatus
Patent
1979-07-10
1981-08-11
Ciarlante, Anthony V.
Measuring and testing
Vibration
Sensing apparatus
7386234, G01N 2900
Patent
active
042827566
ABSTRACT:
This invention concerns apparatus for reliably estimating the strain on an inaccessible portion of a shaft of a turbine generator system which is susceptible to torsional oscillation. The strain is continuously predicted on a real time basis as a function of the modal analysis parameters of the shaft. Furthermore, system torque is detected electrically at the output of the generator. This signal along with signals representative of shaft angular velocity at the easily accessible ends thereof is provided to the modal analysis means as inputs. The provision of these latter system data allow for the elimination of an equal number of unknowns in the modal analysis representation, thus reducing the complexity of the analyzing system and increasing the reliability.
REFERENCES:
patent: 3934459 (1976-01-01), Wolfinger et al.
patent: 4051427 (1977-09-01), Kilgore et al.
patent: 4057714 (1977-11-01), Fork et al.
Bowler et al., IEEE Transactions of Power Apparatus & Systems, vol. PAS-97, #5, Sep./Oct. 1978, pp. 1489-1496.
Translation of a Lecture on the Meeting "Kraftwerk-Generatoren" (Turbine Generators) Nov. 8-9, 1977, Mannheim (Fed. Rep. of Germany.
Molnar Albert J.
Ramey Donald G.
Wolff Fred H.
Ciarlante Anthony V.
Moran M. J.
Westinghouse Electric Corp.
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