Controller for ropeless elevator

Details Controller for ropeless elevator Controller for ropeless elevator

1993-06-22

1995-02-28

Stephan, Steven L.

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

187394, B66B 106, B66B 302

Patent

active

053939417

ABSTRACT:
A controller for a ropeless elevator, includes: a cross induction line cable arranged along the hoistway; an exciter provided on the car side to generate sinusoidal waves for positional detection in the cable; a movement amount detector provided on the car side to detect a car movement amount; a data calculator provided on the car side to calculate data on car speed and on secondary-conductor magnetic pole phase from the movement amount detected by the movement amount detector; a data transmitter provided on the car side to utilize the cross induction line cable in transmitting the data calculated by the data calculator to the building side; an induction radio circuit provided on the building side to utilize the cable in receiving data from the data transmission device and calculate the initial phase of the secondary conductor from the sinusoidal waves generated in the cross induction line cable; and an inverter control circuit provided on the building side to interpolate the initial phase calculated by the induction radio circuit on the basis of the magnetic pole phase received by the induction radio circuit and control the inverter on the basis of the calculated car position and the car speed data received by the induction radio circuit.

REFERENCES:
patent: 3601227 (1971-08-01), Birch
patent: 3904941 (1975-09-01), Matsui et al.
patent: 3979091 (1976-09-01), Gagnon et al.
patent: 4083430 (1978-04-01), Gingrich
patent: 4341287 (1982-07-01), Kuzunuki et al.
patent: 4387436 (1983-06-01), Katayama et al.
patent: 4603640 (1986-08-01), Miller et al.
patent: 5070967 (1991-12-01), Katzy et al.
patent: 5158156 (1992-10-01), Okuma et al.
patent: 5183980 (1993-02-01), Okuma et al.
patent: 5235144 (1993-08-01), Matsui et al.

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