Research on the effect of electro-hydrostatic actuators (EHA) on the curve negotiation performance and wheel wear of intercity EMUs
Ye Song, Yayun Qi, Hua Liu, Huanyun Dai
Abstract
To address the issues of insufficient curve negotiation performance and wheel rail wear of intercity electric multiple units, this paper proposes two types of active radial bogie systems by arranging actuators laterally and longitudinally between the axlebox and bogie. A detailed electro-hydraulic actuator system model was established. The fractional-order proportional-integral controller is used to control the force. The SIMPACK and MATLAB/Simulink platforms were used to establish a vehicle dynamics model, and the curve negotiation performance was evaluated under different operational conditions. The wheel-rail wear on a small radius curved track was analyzed by the Jendel wear model. The results show that both active radial bogies enhance the curve negotiation of intercity electric multiple units and reduce wheel-rail wear. The longitudinally arranged electro-hydraulic actuator active radial vehicle performs better than the laterally arranged style. The wear depth of the outer and inner wheels and rails of the guiding wheelset is also significantly reduced. Compared with the passive control, the wear of the outer wheel of the longitudinally arranged style on the curved track is reduced by 47%, and the outer rail is reduced by 31%. This paper provides a reference for the active control of intercity electric multiple units.