Error detecting unit for a rotational detector

Details Error detecting unit for a rotational detector Error detecting unit for a rotational detector

1990-10-23

1993-02-09

Ro, Bentsu

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

328120, H03K 519

Patent

active

051855631

ABSTRACT:
An error detecting unit for a rotational detector which outputs two kinds of pulse signals whose frequency according to rotation is equal and whose phase is different including counters for detecting whether or not either a rising or a falling edge of the two kinds of pulse signals appears alternately so as to detect an error of the corresponding rotational detector.

REFERENCES:
patent: 3843915 (1974-10-01), Helmbold
patent: 4266215 (1981-05-01), Adams
patent: 4442532 (1984-04-01), Takemura
patent: 4558304 (1985-12-01), Wand
patent: 4578748 (1986-03-01), Abe et al.
patent: 4591969 (1986-05-01), Bloom et al.
patent: 4845379 (1986-07-01), Carlsten
patent: 4882529 (1989-11-01), Kobari et al.
patent: 5014801 (1991-05-01), Hirose

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