Speed detection apparatus

Details Speed detection apparatus Speed detection apparatus

1985-04-26

1987-12-29

Krass, Errol A.

Boots, shoes, and leggings

318317, 324166, 73488, G05B 500, G01P 348

Patent

active

047165359

ABSTRACT:
A speed detection apparatus for detecting speed of electric equipment on the basis of a sampling interval so as to stably operate a variable speed control system connected thereto.
The sampling interval is varied in accordance with an input current to be supplied to the electric equipment to compensate for different current pulsations due to different modes of operation and the torques produced at different load conditions.

REFERENCES:
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patent: 4149116 (1979-04-01), Minakuchi
patent: 4301444 (1981-11-01), Bruckert et al.
patent: 4413212 (1983-01-01), Okamoto et al.
patent: 4427933 (1984-01-01), Wagener et al.
patent: 4471452 (1984-09-01), Borchert
patent: 4489258 (1984-12-01), Kahlen et al.
patent: 4581711 (1986-04-01), Hirata et al.
patent: 4621224 (1986-11-01), Watabe et al.

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