엘리베이터 로프의 동적 모델 검증을 위한 로프 진동 실험

Abstract

In this paper, the vibration characteristic of elevator rope was verified. To this end, the dynamic model of elevator rope was derived using Rayleigh-Ritz method. And the numerical simulation was carried out for theoretical predictions. To calculate the response of elevator rope, the parameters of real elevator was considered. Based on numerical simulation, the vibration experiments were carried out to validate the dynamic model of elevator rope. To measure the vibration of elevator rope, the CCD camera and the line laser was considered. And the image processing technique was applied to calculate the horizontal displacement of elevator rope. Measurement equipment was installed in elevator shaft at 3m, 29m, and 51m from the base level. Shaker was equipped at the bottom of elevator rope to excite the rope. In experiments, the displacement of rope was measured when the elevator rope was subjected to each natural frequencies. Experimental results are in good agreement with theoretical predictions.