抄録
In the proposed adhesion control methods with sensors, the wheel speed is required for the tractive force estimation.However, in the railway field, the pulse generator (PG) used forthe wheel speed measurement is attached on the main motor and with only 60 pulse-per-revolution (ppr).Therefore, when the train is in the low-speed region, the speed value cannot be obtained in each control period.To solve this problem, the adhesion control in low-speed region with considering the low-resolution PG is proposed in this paper.In this control method, a disturbance-instantaneous-speed observer is designedto (1) estimate the instantaneous wheel speed from the motor torque and the corrected tractive torque, (2) correct the estimated tractive torque when the real speed signalis measured from PG.The simulation and experiment verification results of the effectiveness of the proposed adhesion control with the instantaneous wheel speed estimation are reported.
