Analysis and control of vibration of ropes in a high-rise elevator under earthquake excitation
Analysis and control of vibration of ropes in a high-rise elevator under earthquake excitation
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DOI：
10.1007/s11803-019-0514-9
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发表时间：
2019-04
影响因子：
2.8
通讯作者：
Thuan Xuan Nguyen;N. Miura;A. Sone
中科院分区：
文献类型：
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作者：
Thuan Xuan Nguyen;N. Miura;A. Sone
本研究以一高层电梯系统为研究对象，同时探讨电梯主绳与补偿绳在地震作用下的振动。此外，本文提出了一种新的控制方法来抑制摆动的两个绳索。本研究考虑电梯运行过程中绳长的变化，这会导致其他系统参数如固有频率和阻尼比成为时变变量。通过数值求解控制非平稳非线性方程，分析了绳索的动力学。为了减轻绳索在几种运动状态下的振动，特别是向上运动、向下运动、停在最低位置和停在最高位置时，在补偿滑轮处安装主动设备。分析了系统在无干扰静止车、无干扰移动的车、有干扰静止车和有干扰移动的车四种状态下的稳定性。数值仿真结果验证了该控制器用于抑制电梯钢丝绳振动的有效性。
In this research, the vibration of elevator ropes, including the main rope and compensation rope are investigated simultaneously in a high-rise elevator system under earthquake excitation. Moreover, the paper presents a new control method to restrain the sway of both ropes. This study considers varying rope lengths during elevator operation which cause other system parameters such as natural frequency, and damping ratio to be time-variant variables. The dynamics of the ropes are analyzed by solving the governing non-stationary, nonlinear equation numerically. In order to mitigate the vibration of ropes in several motion conditions, particularly upwards movement, downward movement, stopped at the lowest position, and stopped at the highest position, an active equipment is installed at the compensation sheave. The stability of the system using the controller is analyzed at four states: without disturbance and static car, without disturbance and mobile car, including disturbance and static car, and including disturbance and mobile car. The efficiency of the controller used for dampening the vibration of elevator ropes is validated by numerical simulation results.