Elevator system

Details Elevator system Elevator system

B - Operations, Transporting

66

B

364/23

B66B 1/28 (2006.01) B66B 1/30 (2006.01) H02P 7/292 (2006.01)

Patent

CA 1064174

ELEVATOR SYSTEM ABSTRACT OF THE DISCLOSURE An elevator system of the traction type having a direct current drive motor for moving the elevator car in a guided vertical path. An adjustable voltage source for the direct current motor is controlled by a control signal modified by a jitter suppression signal. The jitter sup- pression signal is proportional to vertical oscillation of the elevator car.

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