Magnetically suspended device with function of measuring viscosi

Details Magnetically suspended device with function of measuring viscosi Magnetically suspended device with function of measuring viscosi

1997-01-16

1998-08-25

Brock, Michael

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

73 5435, 73 5423, G01N 1114

Patent

active

057984549

ABSTRACT:
A rotor is magnetically suspended in liquid by a non-active magnetic bearing with opposed permanent magnets, a step shaped signal at constant voltage is generated from a signal generator, and supplied to an electromagnet of an active magnetic bearing, the response of the rotor at the time is detected by a position sensor, and viscosity equivalent to an damping coefficient is calculated by a CPU.

REFERENCES:
patent: 2563567 (1951-08-01), Wakefield
patent: 4781525 (1988-11-01), Hubbard et al.
patent: 5350283 (1994-09-01), Nakazeki et al.

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