Abstract Torsional vibrations in the power drivetrain are a serious problem for power-split hybrid electric vehicles (HEVs) since the engine is directly connected to the transmission system. The torque ripple also decreases the performance of such vehicles and passenger comfort. The purpose of this paper is to investigate the vibrational performance induced by the engine ripple torque of a power-split HEV under the control of active damping. First, a detailed dynamic model of a power-split HEV is introduced to analyse the dynamic characteristics of the system. Subsequently, a simplified dynamic model of the transmission is proposed; this model simplifies the dynamic analysis of the transmission and makes active vibration control possible. Then, an active vibration controller based on the filtered-x least mean square (FxLMS) algorithm is applied to deal with the vibration in the power-split HEV. The electric motors of the powertrain are used as active damping actuators. The proposed approach is authenticated with simulations. The simulation results show that in steady-state conditions, by applying the active damping algorithm, over 60% of the fluctuation torque in driveline shafts is reduced at different velocities and driving modes, demonstrating that the proposed strategy is effective.

中文翻译：

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动力分流混合动力汽车发动机转矩脉动建模与主动阻尼

摘要 由于发动机直接连接到传动系统，因此动力传动系统中的扭振对于功率分流混合动力电动汽车 (HEV) 来说是一个严重的问题。扭矩脉动还会降低此类车辆的性能和乘客舒适度。本文的目的是研究在主动阻尼控制下由动力分配型 HEV 的发动机脉动扭矩引起的振动性能。首先，引入功率分流 HEV 的详细动态模型来分析系统的动态特性。随后，提出了变速器的简化动力学模型；该模型简化了传动装置的动态分析并使主动振动控制成为可能。然后，应用基于滤波x最小均方（FxLMS）算法的主动振动控制器来处理功率分配HEV中的振动。动力总成的电动机用作主动阻尼执行器。所提出的方法通过模拟得到验证。仿真结果表明，在稳态条件下，通过应用主动阻尼算法，传动轴在不同速度和驱动模式下的波动扭矩降低了 60% 以上，表明所提出的策略是有效的。