Rotary electrostatic encoder

Details Rotary electrostatic encoder Rotary electrostatic encoder

2011-01-04

2011-01-04

Nguyen, Kahi M (Department: 2819)

Coded data generation or conversion

Digital pattern reading type converter

Magnetic, inductive or capacitive

C341S011000, C341S112000, C341S116000

Reexamination Certificate

active

07864075

ABSTRACT:
A rotary electrostatic encoder comprising a disk-shaped fixed plate having a first transmission electrode, a second transmission electrode, and four reception electrodes; a disk-shaped rotating plate having a first induction electrode superposed on and facing the first transmission electrode, and a second induction electrode positioned on the inside of the first induction electrode and superposed on and facing the second transmission electrode, a portion of the second induction electrode being a protruding eccentric circular part; transmission means for applying a transmission signal between the first transmission electrode and the second transmission electrode; and signal processing means for generating an output signal relating to the absolute rotational displacement of the rotating plate on the basis of two signal components generated from the four reception electrodes.

REFERENCES:
patent: 6492911 (2002-12-01), Netzer
patent: 7259695 (2007-08-01), Andermo
patent: 08-233605 (1996-09-01), None
patent: 2002-542476 (2002-12-01), None
patent: 2005-221472 (2005-08-01), None

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