Elevator system

Details Elevator system Elevator system

1984-02-09

1985-05-07

Roskoski, Bernard

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 130

Patent

active

045152470

ABSTRACT:
An elevator system which generates a landing speed pattern having the advantages of both digital and analog based patterns, without the disadvantages of either, by generating a landing speed pattern which is a digital, i.e., absolute position, and analog composite. The absolute position of the elevator car in the landing zone of a target floor is detected at only a few points on each side of floor level, and an absolute pattern value is stored in memory for each such point. The stored speed pattern values are retrieved as the car arrives at each absolute position point and used for establishing the landing speed pattern, with the last such value being modified to provide a continuous pattern which smoothly blends with the next stored speed pattern value as the elevator car reaches the next absolute position point.

REFERENCES:
patent: 4034856 (1977-07-01), Wehrli et al.
patent: 4128142 (1978-12-01), Satoh et al.
patent: 4136758 (1979-01-01), Tachino
patent: 4155426 (1979-05-01), Booker, Jr.
patent: 4354577 (1982-10-01), Yonemoto

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