Method of determining the rotational speed of a brushless DC-mot

Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means

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318254, 324175, 250231180, G01P 336

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active

051987384

ABSTRACT:
A method of determining the rotational speed of a three-phase brushless DC-motor, which comprises scanning at least one signal trace disposed on a revolving rotor of a three-phase brushless DC-motor by means of three sensors, each emitting a signal having two possible signal states, the signal trace and the sensors being of such construction and arrangement that eight values are realized by a logical combination of the two possible signal states, respectively, of the three sensors; detecting the rotor position with six of the values; and determining the rotational speed with the other two values.

REFERENCES:
patent: 4228396 (1980-10-01), Palombo et al.
patent: 4270074 (1981-05-01), Duckworth et al.
patent: 4490661 (1984-12-01), Brown et al.
patent: 4565956 (1986-01-01), Zimmermann et al.
patent: 4701649 (1987-10-01), Maemine
patent: 4717864 (1988-01-01), Fultz
patent: 4782272 (1988-11-01), Buckley et al.
patent: 4783705 (1988-11-01), Moon et al.
patent: 4868443 (1989-09-01), Rossi
patent: 4958248 (1990-09-01), Trcka
patent: 4983915 (1991-01-01), Rossi
patent: 5021735 (1991-06-01), Maass et al.

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