Capacitive angular position sensor

Details Capacitive angular position sensor Capacitive angular position sensor

2005-04-05

2005-04-05

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S662000, C324S207140, C324S207200, C324S207250

Reexamination Certificate

active

06876209

ABSTRACT:
A sensor assembly for sensing angular position of one object relative to another object. A capacitor is formed between a transmitter capacitor plate having a pair of transmitter electrodes and a receiver capacitor plate having preferably eight receiver electrodes forming four receiver electrode pairs. A dielectric rotor rotates between the plates, the rotor having first and second segments each subtending 67.5 which are mutually separated by a vacancy subtending 45 degrees, and further having a third segment subtending 45 degrees disposed between the first and second segments diametrically opposite the vacancy. An electrical circuit measures net charge induced on each of the receiver electrode pairs, wherein the charges indicate the angular position of said rotor relative to said transmitter and receiver capacitor plates.

REFERENCES:
patent: 4755731 (1988-07-01), Anthony et al.
patent: 5077635 (1991-12-01), Bollhagen et al.
patent: 6483321 (2002-11-01), Brasseur

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