Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1990-09-28
1992-08-11
Ro, Bentsu
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
318158, 318504, 318561, 318600, B66B 106, G05B 1302
Patent
active
051371197
ABSTRACT:
A current regulator phase controls a power signal to control silicon controlled rectifiers arranged in a bridge. The silicon controlled rectifiers excite a generator field of an elevator drive. Discontinuity in the generator field current, caused by the inductive load and latching and holding currents in the silicon controlled rectifiers, is detected to provide an analog discontinuity signal. The analog discontinuity signal is converted to digital form and used to dynamically alter the gain and response of the regulator.
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Horbruegger Herbert K.
Toutaoui Mustapha
Baggot Breffni X.
Otis Elevator Company
Ro Bentsu
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