Multiple output rotational position detection device

Details Multiple output rotational position detection device Multiple output rotational position detection device

1984-10-15

1986-08-05

Karlsen, Ernest F.

Electricity: measuring and testing

Magnetic

Displacement

324162, 318653, 336135, G01B 714, G01P 356, H01F 2106, G05B 106

Patent

active

046045759

ABSTRACT:
This device comprises a first detector having a first rotor and a first stator for detecting an absolute rotational position within one cycle which corresponds to 1/N circumference, said rotor having teeth of N, and a second detector having a second rotor coupled with the first rotor and a second stator for detecting an absolute rotational position within one circumference within one cycle which corresponds to one circumference. The first and second stators are respectively provided with primary coils and secondary coils. The respective primary coils are excited by reference AC signals generated in response to a clock pulse signal from a clock pulse generator. Phase differences between first and second output signals produced from the secondary coils of the respective detectors and the reference AC signals are obtained by counting the clock pulse signal.

REFERENCES:
patent: 3281655 (1966-12-01), Blasingame
patent: 3641467 (1972-02-01), Ringland
patent: 4282485 (1981-08-01), Pauwels et al.

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