High frequency vibration characteristics of electric wheel system under in-wheel motor torque ripple
High frequency vibration characteristics of electric wheel system under in-wheel motor torque ripple
复制标题
轮毂电机转矩脉动下电动轮系统高频振动特性
DOI：
10.1016/j.jsv.2017.04.011
复制
发表时间：
2017-07-21
影响因子：
4.7
通讯作者：
Duan, Xianglei
中科院分区：
文献类型：
--
作者：
Mao, Yu;Zuo, Shuguang;Duan, Xianglei
随着轮毂电机的引入，电动轮系统遇到了电机转矩脉动励磁带来的新的振动问题。为了分析电动轮系统新的振动特性，对基于电机模块和矢量控制系统的轮毂电机转矩脉动进行了初步分析，并讨论了转矩脉动的频率/阶次特征。然后建立了基于刚性环轮胎假设的四分之一车辆电动轮系统(QV-EWS)动力学模型，并通过轮胎自由模态试验确定了模型的主要参数。进一步分析了模型的模态特性。分析表明，轮毂电机的扭矩激励容易引起水平振动，其中电动轮系统的同相旋转、反相旋转和水平平移模式主要参与其中。基于该模型，对QV-EWS在扭矩脉动下的振动响应进行了仿真。结果表明，与路面不平整度引起的垂直低频（低于20 Hz）振动不同，宽带扭矩脉动由于上述三种模态的参与，会引起电动轮系统的水平高频（50-100 Hz）振动。为了验证理论分析，进行了电动轮系统的台架实验并获取了振动响应。实验验证了电动轮系统的高频振动现象，测得的阶次特征以及主要谐振频率与仿真结果一致。通过理论建模、分析和实验，揭示和解释了电动轮系统的高频振动特性，为QV-EWS的动力学分析、优化设计提供参考。 (C) 2017 Elsevier Ltd. 保留所有权利。
With the introduction of in-wheel motor, the electric wheel system encounters new vibration problems brought by motor torque ripple excitation. In order to analyze new vibration characteristics of electric wheel system, torque ripple of in-wheel motor based on motor module and vector control system is primarily analyzed, and frequency/order features of the torque ripple are discussed. Then quarter vehicle-electric wheel system (QV-EWS) dynamics model based on the rigid ring tire assumption is established and the main parameters of the model are identified according to tire free modal test. Modal characteristics of the model are further analyzed. The analysis indicates that torque excitation of in-wheel motor is prone to arouse horizontal vibration, in which in-phase rotational, anti-phase rotational and horizontal translational modes of electric wheel system mainly participate. Based on the model, vibration responses of the QV-EWS under torque ripple are simulated. The results show that unlike vertical low frequency (lower than 20 Hz) vibration excited by road roughness, broadband torque ripple will arouse horizontal high frequency (50-100 Hz) vibration of electric wheel system due to participation of the three aforementioned modes. To verify the theoretical analysis, the bench experiment of electric wheel system is conducted and vibration responses are acquired. The experiment demonstrates the high frequency vibration phenomenon of electric wheel system and the measured order features as well as main resonant frequencies agree with simulation results. Through theoretical modeling, analysis and experiments this paper reveals and explains the high frequency vibration characteristics of electric wheel system, providing references for the dynamic analysis, optimal design of QV-EWS. (C) 2017 Elsevier Ltd. All rights reserved.