Patent ID: 6026935
Filing Date: 2000-02-22
Classification: B66B

Abstract:
A cage stop height readjusting method for an elevator system wherein a cage is stopped at a zero level by re-running the cage when the cage is positioned in a cage stop height adjusting zone, the method comprising:a first step for obtaining minimum values of first and second position detection signals output from position detectors when the cage is stopped at a stop level and obtaining maximum values of the first and second position detection signals when the cage is stopped at a certain distance from the stop level to set a cage stop height adjusting zone;a second step for performing a cage stop height adjusting operation when the cage is stopped in the set cage stop height adjusting zone;a third step for initializing a buffer storing a relative distance value when the cage comes into a door zone and storing a running direction of the cage; anda fourth step for storing a computed value, which is obtained by accumulatively summing the number of pulses in a pulse signal from a position detection rotary encoder, into the buffer as the relative distance value until the cage coming into the door zone is stopped.