Motor eccentricity measuring apparatus

Details Motor eccentricity measuring apparatus Motor eccentricity measuring apparatus

1992-03-25

1994-11-15

Black, Thomas G.

Boots, shoes, and leggings

364560, G01B 2120

Patent

active

053654587

ABSTRACT:
A motor eccentricity measuring apparatus is provided comprising a detecting device for detecting a deflection of the rotating shaft of a motor, a first, a second, and a third hold device for holding detected values supplied from the detecting device, and an amplifier device for amplifying a difference between two outputs of the first and the second hold device. In operation, RRO is calculated, during a first measuring period, from the detected values of the first and third hold device and NRRO is calculated, during a second measuring period, from the detected values of the first and second hold device and simultaneously, amplified with the amplifier device.

REFERENCES:
patent: 3986380 (1976-10-01), Biggs
patent: 4135244 (1979-01-01), Davis
patent: 4616276 (1986-10-01), Workman
patent: 4896228 (1990-01-01), Amakasu et al.
patent: 4941105 (1990-07-01), Marangoni
patent: 5072318 (1991-12-01), Yu
patent: 5140534 (1992-08-01), Miller et al.

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