Elevator speed controller

Details Elevator speed controller Elevator speed controller

1998-08-27

2000-07-18

Salata, Jonathan

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

187393, B66B 134

Patent

active

060893559

ABSTRACT:
To provide an elevator speed controller capable of suppressing vibration of an elevator of which natural frequency is largely variable and enabling a highly accurate speed control irrespective of change in elevator characteristic and easy adjustment. An elevator speed controller, comprising a car speed command value setting means to set a car speed command value upon receipt of an elevator starting command to move a car up/down via a rope wound around a sheave by driving the sheave by a motor and a car speed command value correcting means to correct a car speed command value set by the car speed command value setting means by a vibration detected value detected by a car vibration detecting means so as to suppress the car vibration, in structure to control a motor speed according to a corrected car speed command value.

REFERENCES:
patent: 5120023 (1992-06-01), Kawabata
patent: 5542501 (1996-08-01), Ikejima et al.
patent: 5747755 (1998-05-01), Coste et al.
patent: 5824975 (1998-10-01), Hong
patent: 5828014 (1998-10-01), Goto et al.

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