Motor-driven positioning system with reflective optical encoder

Details Motor-driven positioning system with reflective optical encoder Motor-driven positioning system with reflective optical encoder

1990-12-24

1992-04-07

Pellinen, A. D.

Coded data generation or conversion

Digital pattern reading type converter

Optical

318439, H03M 122

Patent

active

051032252

ABSTRACT:
A low cost, high resolution optical encoder for a brushless DC motor comprises reflective sensors, and a movable disk cooperating with a stationary pattern to provide a pattern of reflective and non-reflective areas for the sensors that can be used to generate motor positional information as well as commutation drive signals.

REFERENCES:
patent: 4228396 (1980-10-01), Palombo et al.
patent: 4591774 (1986-05-01), Ferris et al.
patent: 4644157 (1987-02-01), Ozawa et al.
patent: 4727356 (1988-02-01), Abe et al.
patent: 4780703 (1988-10-01), Ishida et al.
patent: 4978847 (1990-12-01), Fukunaga et al.
patent: 5006703 (1991-04-01), Shikunami et al.

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