Method and apparatus for measuring dynamic imbalance of sphere

Details Method and apparatus for measuring dynamic imbalance of sphere Method and apparatus for measuring dynamic imbalance of sphere

1996-01-11

1998-01-06

Biegel, Ronald L.

Measuring and testing

Center of gravity; turning moment; metacentric height

Electric sensor

73 6507, G01M 100

Patent

active

057057400

ABSTRACT:
A sphere is supported in a floating condition by a pneumatic bearing so as to be rotated by compressed air sprayed from a nozzle. The sphere has a single point magnetized on its surface, and is placed on its rotating axis. If the sphere has a dynamic imbalance, the single point is subjected to pressesion around its inertia axis, the locus and displacement velocity of which are measured by the Hall elements arranged in an arc line around the pneumatic bearing, thereby obtaining the dynamic imbalance of the share.

REFERENCES:
patent: 4111038 (1978-09-01), Olson et al.
patent: 4233846 (1980-11-01), Taylor
patent: 4546644 (1985-10-01), Beny et al.
patent: 4688427 (1987-08-01), Hyland, Jr.

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