Active–Passive Torsional Vibration Suppression Method for Electromechanical Coupling System of Parallel Hybrid Electric Vehicles

<div>The diversity of excitation sources and operating modes in hybrid electric vehicles (HEVs) exacerbates the torsional vibration issues, presenting significant challenges to the vehicle’s overall noise, vibration, and harshness performance. To address the complex torsional vibration challenges of the HEVs, this study proposed an active–passive collaborative vibration suppression approach. In terms of passive suppression, a multi-condition parameter optimization scheme for the torsional vibration dampers is designed. In terms of active suppression, a fuzzy control–based electronically controlled damper is proposed, and a hybrid feedforward–feedback motor torque compensation strategy is developed. Simulation results demonstrated that the proposed method reduces the root mean square value of the angular acceleration by over 65% under acceleration and idle conditions and the maximum transient vibration value by 55% during the engine starting condition.</div>