BEV Drivetrain Parameters Sensitivity for Efficient and Effective Active Damping Controls Modeling

Effective active damping control is critical for battery electric vehicle (BEV) drive quality. Central to this control is the open loop frequency response function between actuator (motor torque) and response (motor speed). While many driveline parameters influence the system dynamics, sensitivity analysis reveals that only a few of them significantly shape the resonance frequency and amplitude of crucial low frequency driveline modes. In this study, an orthogonal array-based sensitivity analysis is conducted and validated using 1D simulation tool Amesim. The results show that identifying the most influential parameters enables meaningful model simplification without loss of accuracy, guiding quick and efficient modelling to help design control systems. This approach provides engineers with a practical framework to focus on critical variables of driveline torsional system, reduce model complexity and implement effective control strategies.