Two stage quadrature incremental encoder

Details Two stage quadrature incremental encoder Two stage quadrature incremental encoder

1989-10-18

1991-06-04

Shoop, Jr., William M.

Coded data generation or conversion

Digital pattern reading type converter

Optical

341 11, 318561, 318603, H03M 122, G05B 1300

Patent

active

050217810

ABSTRACT:
An incremental position encoder and method are disclosed herein for a close loop position control system, for example, for positioning a printing device in an electronic postage meter. The incremental position encoder and method includes three channels, first and second of which provide signals for coarse position determination and first or second and third of which provide signals for fine position determination.

REFERENCES:
patent: 4580046 (1986-04-01), Sasaki et al.
patent: 4630210 (1986-12-01), Salazar et al.
patent: 4631681 (1986-12-01), Salazar et al.
patent: 4635205 (1987-01-01), Eckert, Jr. et al.
patent: 4636959 (1987-01-01), Salazar et al.
patent: 4638732 (1987-01-01), Salazar et al.
patent: 4646635 (1987-03-01), Salazar et al.
patent: 4665353 (1987-05-01), Salazar et al.
patent: 4774446 (1988-09-01), Salazar et al.
Furr, Rick & Dorsey, Glenn, "Tips for Applying Servo Positioning Systems", Machine Designs, Mar. 24, 1988, pp. 70-73.

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