基于柔性环轮胎模型的电动轮固有特性分析

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (3) : 41-47.

论文

基于柔性环轮胎模型的电动轮固有特性分析

左曙光1, 毛钰1, 吴旭东1, 段向雷2

作者信息 +

The inherent characteristic analysis of the electrical wheel based on the flexible ring model

ZUO Shuguang1, MAO Yu1, WU Xudong1, DUAN Xianglei2

Author information +

文章历史 +

摘要

为分析分布式驱动电动车用电动轮固有特性，本文基于轮胎柔性环理论建立了电动轮柔性环轮胎模型，计算了电动轮固有频率及各阶振型，说明了电动轮在车轮横断面内模态特性，并根据电动轮自由模态试验对电动轮柔性环模型进行了参数识别。电动轮固有特性分析表明，电动轮零阶模态为与轮胎环切向变形有关的轮胎周向旋转，一阶模态为轮胎环变形和轮胎运动耦合，而高阶模态只与轮胎环变形有关。驱动电机对电动轮固有特性的影响分析表明，引入驱动电机后轮辋质量参数的变化对高阶模态没有影响，而零阶、一阶频率分别随驱动电机转动惯量、质量增大而逐渐减小，且自由模态频率高于轮心固定的约束模态频率。最后通过电动轮约束模态试验验证了上述结论，为电动轮动力学分析、选型及使用提供参考。

Abstract

To analyze the inherent characteristic of the electrical wheel applied in the distributed driven electric vehicles, the flexible ring tire model is established to get the derivation of the equations of the natural frequency and modal shape. The in-plane modal characteristic of the electrical wheel is explained theoretically. And the parameters of the tire model are identified according to the free modal test of the electrical wheel. The analysis of the inherent characteristic shows the modal distribution. The 0th order modal is concerned with the circumferential rotation of tire resulted from the tangential deformation of the tire ring. The 1st modal shows that the deformation of the tire ring and the movement of the tire are coupled with each other. And the other higher modal is only related to the deformation of the tire ring, which indicates that the mass of the drive motor has no influence on the higher modal of tire. It is presented by the analysis of influencing factors that the frequencies of the 0th and 1st order modal reduce gradually with the increase of the moment of inertia and mass of the drive motor separately. And the free modal frequency is higher than the constraint modal as well. At last, the conclusions above are verified by the modal test of the electrical wheel. The conclusions presented in this paper provide the references for the dynamic analysis, selection and using of the electrical wheel.

导出引用

左曙光1, 毛钰1, 吴旭东1, 段向雷2. 基于柔性环轮胎模型的电动轮固有特性分析[J]. 振动与冲击, 2016, 35(3): 41-47

ZUO Shuguang1, MAO Yu1, WU Xudong1, DUAN Xianglei2. The inherent characteristic analysis of the electrical wheel based on the flexible ring model[J]. Journal of Vibration and Shock, 2016, 35(3): 41-47

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