Device for sensing a radial position spread over more than...

Details Device for sensing a radial position spread over more than... Device for sensing a radial position spread over more than...

2009-08-05

2011-10-04

Nghiem, Michael (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Orientation or position

C324S207250, C310S0400MM

Reexamination Certificate

active

08032325

ABSTRACT:
The invention produces contactless radial position sensors having an equivalent angular aperture greater than 90°, and substantially eliminates the spurious microvibrations due to the imperfections of the current sensors. For this, the invention uses at least four independent sensors and an electronic device capable of virtually placing in series said sensors in groups of two or three in order to spread the equivalent angular aperture of said groups of sensors.

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Matsuda et al., Optimal Number of Stator Poles for Compact Active Radial Magnetic Bearings, Aug. 2007, IEEE Transactions on Magnetics, vol. 43, No. 8, pp. 3420-3427.

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