Method and system for controlling sway of ropes in elevator systems by modulating tension on the ropes

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United States of America Patent

PATENT NO 9278829
APP PUB NO 20140124300A1
SERIAL NO

13670632

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Abstract

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A method controls an operation of an elevator system using a control law to stabilize a state of the elevator system using a tension of an elevator rope. A derivative of a Lyapunov function along dynamics of the elevator system controlled by the control law is negative definite. The control law is a function of amplitude of a sway of the elevator rope and a velocity of the sway of the elevator rope. The method determines the amplitude of the sway of the elevator rope and the velocity of the sway of the elevator rope during the operation, and determines a magnitude of the tension of the elevator rope based on the control law, and the amplitude and the velocity of the sway of the elevator rope.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI ELECTRIC RESEARCH LABORATORIES INC201 BROADWAY CAMBRIDGE MA 02139

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benosman, Mouhacine Boston, US 45 259

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