Semi-Active Control of the Sway Dynamics for Elevator Ropes
For elevator system designers, this work offers a control method for mitigating rope sway, but it is an incremental application of existing Lyapunov theory to a specific mechanical system.
The paper addresses control of rope sway dynamics in elevator systems using a semi-active damper, proposing Lyapunov-based nonlinear controllers that stabilize the dynamics, with performance demonstrated on a numerical example.
In this work we study the problem of rope sway dynamics control for elevator systems. We choose to actuate the system with a semi-active damper mounted on the top of the elevator car. We propose nonlinear controllers based on Lyapunov theory, to actuate the semi-active damper and stabilize the rope sway dynamics. We study the stability of the proposed controllers, and test their performances on a numerical example.