Optimal design of control device to reduce elevator ropes responses against earthquake excitation using Genetic Algorithms
Optimal design of control device to reduce elevator ropes responses against earthquake excitation using Genetic Algorithms
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DOI：
10.1299/jamdsm.2019jamdsm0038
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Xuan-Thuan Nguyen;N. Miura;A. Sone
中科院分区：
文献类型：
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作者：
Xuan-Thuan Nguyen;N. Miura;A. Sone
日本机械工程师学会[DOI：10.1299/jamdsm.2019jamdsm0038]本文研究了电梯钢丝绳在地震激励下位移响应的减缩问题。对某高层建筑主索和补偿索在地震激励下的同时振动进行了数值模拟。考虑了钢丝绳长度的变化对钢丝绳质量、阻尼力、刚度等参数的影响。为了减小补偿钢丝绳和主绳的位移响应，在补偿滑轮上安装了改变钢丝绳张力的执行机构。通过数值求解控制方程，对两根钢丝绳的振动进行了分析。提出了一种控制器来抑制两根绳索的位移响应。介绍了一种以绳索位移最小为目标，优化控制参数的遗传算法，并将其应用于高层电梯钢丝绳在地震作用下的优化设计。用标准差方法给出了期望参数。利用期望控制参数，对遗传算法过程中不同于实际地震情况的两根绳索的振动进行了控制。仿真结果验证了所提出的控制方法对减小绳索位移响应的有效性。
Paper No.18-00504 © 2019 The Japan Society of Mechanical Engineers [DOI: 10.1299/jamdsm.2019jamdsm0038] Abstract In this paper, the reduction of the displacement responses of the elevator ropes under earthquake excitation has been investigated. The simultaneous vibrations of main rope and compensation rope in a high-rise building under earthquake excitation have been simulated. The varying length of rope is considered that caused the variation of other rope parameters such as mass, damping and stiffness. In order to reduce displacement responses of the compensation rope and the main rope, an actuator device which will change the tension of the ropes is applied at the compensation sheave. The vibrations of both ropes are analyzed by solving numerically the governing equations. A controller is proposed to restrain the displacement responses of the both ropes. A Genetic Algorithm which minimizes the displacement of the ropes and optimizes the control parameters, is introduced and applied to the high-rise elevator rope under earthquake excitations. The expected parameters are provided by standard deviation method. By using the expected control parameters, the proposed method is applied to control the vibrations of both ropes under some cases of earthquakes which are different with the earthquakes in Genetic Algorithm process. The results of the simulation validate the effectiveness of the proposed control method for reducing the displacement responses of the ropes.