Device for measurement of amplitude and angular position of an u

Measuring and testing – Rotor unbalance – In situ

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73462, G01M 116

Patent

active

045108099

ABSTRACT:
A first processing circuit receives signals from a vibratory acceleration and a speed of rotation and position sensor and comprises integration and filter means for providing a signal (sb) representative of the amplitude of any untrue running. A second processing circuit receives the output signal (sw) from the speed of rotation and position sensor and the signal (sb) and includes means for determining the phase difference between the signals (sw) and (sb). A memory (33) stores information representative, for different revolving systems and/or test conditions, of the difference between the measured phase difference and the angular position of an imbalance causing untrue running with reference to an origin on the revolving system. Appropriate information is read from the memory and combined with the measured phase difference in response to the actuation of selection means to provide an accurate output of the angular position of any imbalance causing untrue running.

REFERENCES:
patent: 3102429 (1963-09-01), Hardy et al.
patent: 4162634 (1979-07-01), Hofmann
patent: 4238960 (1980-12-01), Curtis et al.

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