【摘要】 以某燃料电池轿车电动动力总成悬置系统为研究对象,建立了6自由度悬置系统动力学模型,通过试验测量得到电动动力总成的质量和惯量参数以及3点支承悬置元件的三向弹性与阻尼参数,并通过对比系统固有特性计算结果与试验结果的一致性验证了模型的正确性。利用所建立的动力学模型进行了加速工况下悬置变形与作用力、半轴输入端和电机线束部位位移的瞬态响应仿真,仿真结果表明,该悬置系统存在工作负荷严重不均匀及线束可能破坏的问题,需进行系统优化。更多还原

【Abstract】 Based on the electrical powertrain mounting system of a fuel cell vehicle,a six degree-of-freedom dynamic model is established in the paper.The mass,inertia of the electrical powertrain and three-dimensional elastic as well as damping parameters of three-point mounting components are obtained by tests and measurement,and the correctness of this model is validated by consistency of calculation results and test results for the inherent frequency.The transient response,including mounting dynamic deformation and force,driving shaft input end and electric motor’s wiring harness displacement,are simulated on this model,and the simulation results show that the mounting system has uneven working load as well as possible wiring harness breakdown,and need optimization.更多还原