Dynamic response of an elevator car due to stochastic rail excitation
Dynamic response of an elevator car due to stochastic rail excitation
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发表时间：
2006
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通讯作者：
Stefan Kaczmarczyka;Radoslaw Iwankiewiczb
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作者：
Stefan Kaczmarczyka;Radoslaw Iwankiewiczb
电梯汽车遭受由引导系统中的不规则性引起的振动。这些不规则性包括随机缺陷，这些缺陷是随机性质的激励的原因，导致汽车的随机响应。本文重点研究汽车振动的这一方面。二阶统计矩的非平稳方程的制定和一个模型的例子，使用一个典型的建筑电梯安装的参数。结果表明，钢轨激振过程的相关性越弱，车辆动态位移的方差越大。
Elevator cars suffer from vibrations caused by irregularities in the guide system. These irregularities include random imperfections that are responsible for excitation of stochastic nature, resulting in the stochastic response of the car. The present paper focuses on this aspect of the car vibration. The nonstationary equations for the second-order statistical moments are formulated and a model example using the parameters of a typical building elevator installation is presented. It is shown that the weaker the correlation of the rail excitation process the higher the variance of the dynamic displacement of the car.