Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1992-11-16
1995-05-23
Arana, Louis
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324117H, 324117R, 318254, 318138, 318362, G01R 1104
Patent
active
054184517
ABSTRACT:
An apparatus for measuring at least one state variable of a brushless direct-current motor includes 2 * n pole segments, wherein n=1, 2, 3, etc.. The pole segments are integral with a rotor of a brushless direct-current motor and are formed of permanently magnetic material generating a magnetic field. At least one Hall-effect element supplies an output voltage and is disposed in the vicinity of the rotor for impressing the magnetic field of the permanently magnetic segments on the output voltage from the at least one Hall-effect element. A logic unit receives the output voltage from the at least one Hall-effect element for determining the temperature of the brushless direct-current motor.
REFERENCES:
patent: 3738175 (1973-06-01), Linsig
patent: 4135120 (1979-01-01), Hoshimi et al.
patent: 4270074 (1981-05-01), Duckworth et al.
patent: 4547713 (1985-10-01), Langley et al.
patent: 4897584 (1990-01-01), Grutzmacher et al.
Publication IECON '85; CH2160-0/85/0000-0697; 1985 IEEE; Kasim M. Al-Aubidy: "Microprocessor--Based New Measurement Technique of Angular Velocity for Real Time Applications".
Maass Jurgen
Meyer Helmut
Seeberger Jurgen
Arana Louis
Bowser Barry C.
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Lerner Herbert L.
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