Title: A novel two degree-of-freedom dynamic model of a full hybrid vehicle

Authors: Xiaolin Tang; Wei Yang; Dejiu Zhang; Haisheng Yu

Addresses: School of Automobile Engineering, Chongqing University, Chongqing 400044, China ' School of Automobile Engineering, Chongqing University, Chongqing 400044, China ' School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China ' School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Abstract: A novel two degree-of-freedom simplified dynamic model is built to explore the torsional vibration characteristics of a compound planetary power-split hybrid powertrain system. The simplification process and the governing equations of the two degree-of-freedom model are introduced. Moreover, free torsional vibration and forced torsional vibration of the simplified model are computed to get the vibration property. After comparing the full degree-of-freedom model of the hybrid system, the novel two degree-of-freedom simplified model can capture the low-frequency vibration characteristics of this hybrid system. The proposed simple yet efficient powertrain model can be used to study the vibration control of a hybrid powertrain.

Keywords: HEVs; hybrid electric vehicles; vehicle dynamics; torsional vibration; multi-body dynamics; 2DOF models; dynamic modelling; vibration control.

DOI: 10.1504/IJEHV.2017.082817

International Journal of Electric and Hybrid Vehicles, 2017 Vol.9 No.1, pp.67 - 77

Received: 08 Oct 2016
Accepted: 11 Nov 2016

Published online: 07 Mar 2017 *

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