Adaptive digital velocity control loop for a high performance el

Details Adaptive digital velocity control loop for a high performance el Adaptive digital velocity control loop for a high performance el

1993-02-16

1995-01-24

Peckman, Kristine L.

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

Includes motor or motor driven linkage for shifting barrier

388842, B66B 1314

Patent

active

053844394

ABSTRACT:
The present invention solves the problem of discontinuous operation of an elevator door, depending upon the operating point of the door at the time of the reversal command, by a digital control technique which uses as a reference signal for the adaptation, the velocity dictation coming from a profile generator. This gives an information concerning the actual operating point. The adaptation of the controller parameters is made with respect to the signal.

REFERENCES:
patent: 3614571 (1971-10-01), Koch
patent: 4305480 (1981-12-01), Hmelovsky
patent: 4967128 (1990-10-01), Sawai et al.
patent: 5050709 (1991-09-01), Okumura et al.
patent: 5131506 (1992-06-01), Mizuno et al.
patent: 5223778 (1993-06-01), Svarovsky et al.

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