Apparatus for measuring at least one state variable of a brushle

Details Apparatus for measuring at least one state variable of a brushle Apparatus for measuring at least one state variable of a brushle

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".

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