Research on Anti-slip Control Strategy of Metro Train Based on the Electromagnetic Force
A novel anti-slip control strategy considering electromagnetic effort is proposed to enhance the adhesion level and prevent slipping problems of metro wheels under low-adhesion friction conditions.To this end,a metro train-slab track coupled dynamics model is established,in which the non-linear wheel/rail interactions and the advanced anti-slip control module are treated.The wheel/rail interactions and anti-slip controlling effect under complex wheel/rail friction conditions and traction/braking operations are numerically investigated.The simulation results indicate that the powered wheelset is prone to slip under low-adhesion conditions.The proposed anti-slip controller can improve wheel/rail adhesion level and restrain wheelset slipping phenomenons with the increasing wheel/rail vertical forces.Moreover,the employed anti-slip controller improves traction/braking efficiency compared to the traditional one.
metro trainelectromagnetic adhesion raising devicewheel/rail low-adhesion conditionanti-slip controlvhicle-track coupled dynamicstraction/braking