基于柔性环轮胎模型的电动轮固有特性分析

发布时间：2018-02-10 00:34

本文关键词： 电动轮柔性环模型固有特性模态分析　出处：《振动与冲击》2016年03期 　论文类型：期刊论文

【摘要】：为分析分布式驱动电动车用电动轮固有特性,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]:In order to analyze the inherent characteristics of electric motor wheel of distributed driving electric vehicle, based on the theory of flexible ring of tire, the model of flexible ring tire of electric wheel is established, the natural frequency and modes of each order of electric wheel are calculated, and the modal characteristics of electric wheel in the cross section of wheel are explained. According to the free mode test of electric wheel, the parameter identification of flexible ring model of electric wheel is carried out. The analysis of inherent characteristics of electric wheel shows that the zero order mode of electric wheel is the circumferential rotation of tire which is related to the annular tangential deformation of tire. The first order mode is the coupling of tire ring deformation and tire motion, while the higher order mode is only related to tire ring deformation. The analysis of the effect of driving motor on the inherent characteristics of electric wheel shows that, The change of rim mass parameter has no effect on the higher mode, but the zero order frequency and the first order frequency decrease with the moment of inertia and the mass of the motor increases. The free mode frequency is higher than the constrained mode frequency of the fixed wheel center. Finally, the conclusion is verified by the mode test of the electric wheel constraint, which provides a reference for the dynamic analysis, selection and application of the electric wheel.
【作者单位】：同济大学新能源汽车工程中心;上海汽车集团股份有限公司乘用车公司技术中心;
【基金】：国家自然科学基金资助项目(51375343) 重大科研仪器设备专项(2012YQ150256)
【分类号】：U469.72

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