高速电梯提升系统纵向振动建模与分析

Modeling and Analysis of longitudinal Vibration of High-Velocity Elevator Hoisting System

为了分析电梯桥厢的振动规律,以高速电梯提升系统作为研究对象,利用Hamilton原理建立纵向振动方程,采用Galerkin方法对振动方程进行离散化处理.首先,将某高速电梯实际运行状态作为输入参数,获得桥厢的纵向振动响应;然后,通过机械系统动力学自动分析(ADAMS)建模仿真进行验证.结果表明:基于柔性体弹性变形理论建立的提升系统,其纵向振动模型可靠性较高,可较好地反映轿厢的振动特性;电梯提升过程中,轿厢的纵向振动响应越来越大;同等条件下,空载提升的桥厢纵向振动响应比满载提升强烈.

The vibration rule of lift car was analyzed with a high velocity elevator hoisting system.The longitudinal vibration equation was established based on Hamilton′s principle and the Galerkin method was adopted for its discretization.Using the actual running status of a certain high velocity elevator as the input parameter,the longitudinal vibration response of lift car was obtained and validated it by means of automatic dynamic analysis of mechanical systems(ADAMS)modeling and simulation.The results show that:the longitudinal vibration model of hoisting system established based on the elastic deformation theory for flexible body has a higher reliability and can reflect the vibration performance of lift car better;during the process of elevator hoisting,the longitudinal vibration response of lift car becomes higher;under the same conditions,the longitudinal vibration response of lift car at zero load is stronger than that at full load.