Terminal slowdown speed pattern generator

Details Terminal slowdown speed pattern generator Terminal slowdown speed pattern generator

1983-08-30

1985-02-19

Truhe, J. V.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 506

Patent

active

044999747

ABSTRACT:
Methods and apparatus for providing a desired terminal slowdown speed pattern as an elevator car approaches a terminal floor in the terminal slowdown zone. Markers are fixedly spaced in the zone, with their spacing being a direct function of their distance from the terminal floor. The markers are detected as the elevator car proceeds past them towards the terminal floor, and a train of signals T are produced having values responsive to the marker-to-marker time, i.e., the elapsed time between successive detections of markers. The velocity V of the elevator car is also detected, and the terminal slowdown speed pattern is provided as a function of the product of V and T, as scaled by a constant which includes the square root of the desired deceleration rate.

REFERENCES:
patent: 3779346 (1973-12-01), Winkler
patent: 4161236 (1979-07-01), Husson
patent: 4225015 (1980-09-01), Yamada
patent: 4318456 (1982-03-01), Lowry

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