Device for measuring the number of revolutions of the shaft of a

Details Device for measuring the number of revolutions of the shaft of a Device for measuring the number of revolutions of the shaft of a

1990-12-18

1992-12-15

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324158R, 318636, G01R 1500, G05B 2102

Patent

active

051720485

ABSTRACT:
The device measures the number of revolutions completed by the shaft of a permanent magnet electric motor in a period of time during which it is set in motion by the effect of its connection to a respective electrical supply source, essentially by means of calculation of the integral of the counter-electromotive force which the motor develops in the aforementioned period of time.

REFERENCES:
patent: 3519906 (1970-07-01), Kubler
patent: 3705352 (1972-12-01), Restivo
patent: 3708737 (1973-01-01), Johnson
patent: 3836853 (1974-09-01), Cracraft et al.
patent: 4535405 (1985-08-01), Hill et al.
patent: 4629961 (1986-12-01), Blaschke
patent: 4691152 (1987-09-01), Ell et al.
patent: 4733148 (1988-03-01), Rodi
Electronic Engineering, vol. 46, No. 562, Dec. 1974.

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