Elevator brake control method and arrangement

Details Elevator brake control method and arrangement Elevator brake control method and arrangement

1984-06-21

1986-05-06

Shoop, Jr., William M.

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

045865876

ABSTRACT:
The present invention controls the braking of an elevator by reversing its driver motor. The real time speed of the elevator is compared with a theoretical value to generate a signal for controlling the braking power of the motor. The theoretical value is determined exclusively from a preset table on the basis of the remaining distance to the floor level. The remaining distance and real time speed data is obtained from a single transducer consisting of a perforated disc coupled to the motor shaft and an optoelectronic circuit which emits a pulse for each certain distance travelled by the elevator.

REFERENCES:
patent: 3779346 (1973-12-01), Winkler
patent: 4102436 (1978-07-01), Kernick et al.
patent: 4102437 (1978-07-01), Mandel
patent: 4150734 (1979-04-01), Ohira et al.
patent: 4318456 (1982-03-01), Lowry
patent: 4331220 (1982-05-01), Husson
patent: 4356896 (1982-11-01), Tamura et al.
patent: 4373612 (1983-02-01), Caputo et al.
patent: 4456096 (1984-06-01), Kajiyama

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