Inductive position sensor with common mode corrective...

Details Inductive position sensor with common mode corrective... Inductive position sensor with common mode corrective...

2007-04-17

2008-03-18

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207110, C324S207170

Reexamination Certificate

active

07345473

ABSTRACT:
An inductive position sensor for rotary motion includes a transmitter coil and a receiver coil, the receiver coil generating a receiver signal when the transmitter coil is excited by an alternating current source. A movable coupler element modifies the inductive coupling between the transmitter coil and the receiver coil so that the receiver signal is sensitive to the coupler element position. The ratio between the receiver signal and the reference signal is sensitive to the coupler element position, but substantially insensitive to common mode factors. The angular or positional range of the position sensor can be increased using a plurality of receiver coils.

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PCT Search Report, PCT/IB2006/000811, mailed Sep. 13, 2006.

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