Elevator with Vertical Vibration Compensation

摘要

#$%^&*AU2006201212B220110630.pdf#####- 13ABSTRACT Elevator with Vertical Vibration Compensation 5 The present invention provides an elevator comprising a car (1) arranged to travel along guide rails (6) within a hoistway (8) and a main drive (52,54,56,DMC) to propel the car (1). A sensor (30;40) is mounted on the car (1) to measure a vertical travel parameter (Vc;Ac) of the car (1), a comparator (32) compares the sensed car travel parameter (Vc;AC) with a reference value (Vr;Ar) derived from the main drive (52,54,56,DMC), and an auxiliary 10 motor (24) is mounted on the car (1) to exert a vertical force (F) on at least one of the guide rails (6) in response to an error signal (Ve;Ae) output from the comparator (32). [Fig. 4]