Vibration characteristics and active control strategy of hybrid vehicle dual-motor electric drive system under transient impact conditions

For torsional vibration due to transient impact loads such as road surface inequality during the driving process of a hybrid electric vehicles (HEV), an electromechanical coupling dynamics model of the dual-motor electric drive system (DEDS) is established by considering the dynamic characteristics of the drive motors, the nonlinear meshing impact excitation of the gear transmission system, etc. The dynamic response and vibration characteristics of the DEDS are analysed during sudden step changes in load. On this basis, the fuzzy active disturbance rejection current compensation (F-ADRCC) control strategy is proposed, and fuzzy controller is applied to adapt the internal parameters of the F-ADRCC controller, to realise the active suppression of transient inrush vibration. The simulation results show that the vibration energy of the gear transmission system is significantly reduced after adopting the F-ADRCC control strategy. The research results can provide a theoretical reference for DEDS vibration damping of HEVs.