以典型集中驱动式电动车的动力总成为研究对象,首先建立综合考虑驱动电机、传动系统、悬置支架以及冷却水套等影响的刚柔耦合模型,进行模态仿真分析与试验验证;然后分析作用于动力总成的电磁激励和机械激励,提出考虑电机控制策略影响的电磁激励仿真方法;最后进行电磁-机械综合激励作用下的电动车动力总成振动特性仿真与试验验证。结果表明,所提出的机-电-磁-控多物理场仿真方法可以有效的揭示多源动态激励对动力总成振动的影响,为电动车动力总成优化设计奠定理论基础。
Abstract
Targeting the systematically analysis of the Central-driven Electric Automotive Powertrain,a rigid-flexible powertrain model was built,in consideration of the effects of driving motor, driveline system, mounting brackets and water jacket. The natural characteristics of the model were obtained by simulation and compared with the modal test. Then the mechanical and electromagnetic excitations were analyzed, a simulation method combining motor control strategy in drawing electromagnetic excitation was provided. At last, the vibration characteristics under the mechanical and electromagnetic excitations were simulated and verified by vehicle vibration experiment. The results show that the mechanic-electric-magnetic-control combined simulation method can effectively predict the vibration characteristics of the power train under multi-source dynamic excitations,provide references to the further optimization of electric vehicle powertrain.
关键词
电动车 /
动力总成 /
振动特性 /
机械激励 /
电磁激励
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Key words
Electric vehicle /
Power train /
Vibration characteristics;Mechanical excitation /
Electromagnetic excitation
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