Scheduling of input shaping and transient vibration absorbers for high-rise elevators

This paper presents techniques for the reduction of vibration in high-rise elevator passenger cabs. Reduction in cab vibration improves ride comfort and enables the use of more aggressive motion profiles to shorten travel times. Vibration reduction is accomplished by input shapers in a scheduling algorithm based on elevator position. To deal with transient disturbances, a vibration absorber is used to complement the input-shaping control scheme