Elevator control using switched speed and position

Details Elevator control using switched speed and position Elevator control using switched speed and position

2006-12-12

2006-12-12

Salata, Jonathan (Department: 2837)

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

C187S247000

Reexamination Certificate

active

07147084

ABSTRACT:
An elevator control method is provided, where the elevator motor is controlled in such manner that the velocity of the elevator follows a speed reference. When the elevator is decelerating, the motor is controlled by a speed adjustment method during the initial deceleration phase, and during the final deceleration phase the motor is controlled by a position adjustment method. The instant of transition from speed adjustment to position adjustment is determined substantially using the elevator speed curve.

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Patent Abstracts of Japan, vol. 0144, No. 18, Sep. 10, 1990.

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