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New method for power allocation of multi-power sources considering speed-up transient vibration of planetary power-split HEVs driveline system

机译:考虑到行星动力分离HEVS驱动系统的加速瞬态振动,多电源电源分配的新方法

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One of the major issues for hybrid electric vehicles (HEVs) powertrain is the torsional vibration in the process of speed-up condition, which is unavoidable. The broader goal of this article is to re-examine the classical gear transmission machinery transient vibration problem in the context of a 4 + N degree of freedom nonlinear torsional system that essentially describes a planetary coupling transmission system (PCTS) of HEVs example, and further provide a new method for power allocation of multi-power sources considering speed-up transient vibration of planetary power-split HEVs driveline system. In particular, resonant amplifications during acceleration, as excited by angular displacement-based meshing stiffness of gear teeth, are investigated using a nonlinear torsional model, and the transient vibration predictions are successfully compared with test bench results. Then a quasi-linear model during acceleration process is proposed and numerically solved to obtain the transient vibration acceleration as well as its envelope curve. Dynamic response results of PCTS are also successfully compared and analyzed under different speed-allocation rules. Finally, an improved genetic algorithm method is applied to construct optimal relationship between the motor speeds and vehicle speeds, and the influences of vibration character and energy consumption are successfully considered in multi-optimized function. Experimental results under the speed-up condition show that transient vibration acceleration of the optimized powertrain is decreased within the safe range, thus new power-allocation solutions provide more insight to the enhancement of planetary power-split HEVs quality. (C) 2019 Elsevier Ltd. All rights reserved.
机译:混合动力电动车辆(HEV)动力系的主要问题之一是加速条件过程中的扭转振动,这是不可避免的。本文的更广泛的目标是在4 + N自由度非线性扭转系统的上下文中重新检查经典齿轮传输机械瞬态振动问题,其基本上描述了HEVS示例的行星耦合传输系统(PCTS),以及进一步考虑到行星动力分离HEVS驱动系系统的加速瞬态振动,提供了一种新的电力电源的电力分配方法。特别地,使用非线性扭转模型研究了通过基于角位移的基于齿轮齿的啮合啮合刚度的激发期间的共振扩增,并且与测试台面成功地进行了瞬态振动预测。然后提出了在加速过程期间的准线性模型,并在数值上解决以获得瞬态振动加速以及其包络曲线。对PCTS的动态响应结果也在不同的速度分配规则下进行了比较和分析。最后,应用改进的遗传算法方法来构建电动机速度和车速之间的最佳关系,并且在多优化功能中成功考虑了振动特性和能量消耗的影响。在加速条件下的实验结果表明,优化动力总成的瞬态振动加速度在安全范围内降低,因此新的电力分配解决方案对行星动力分配HEVS质量的提高提供了更多的洞察力。 (c)2019 Elsevier Ltd.保留所有权利。

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