动车组防滑控制特性分析

列车在制动过程中,如果轮轨间制动力超过了最大粘着力,车轮就会产生滑行,轮轨之间的滑动会延长制动距离并使车轮踏面擦伤。踏面擦伤后不仅降低乘车的舒适性,也会给转向架零部件带来附加的冲击力,使其寿命缩短;为避免这种现象的产生,使用微机控制的防滑器,对制动、即将滑行、缓解、再粘着的全过程进行动态检测与控制。通过使用Simulink建立模型对动车组制动时防滑过程进行模拟仿真,通过检测车体、车轮速度的变化来控制制动缸压力的变化,进而达到防止车轮打滑的目的。

The Characteristics of Anti-sliding Control about EMU

When the train is braking,if the brake force between wheel and rail system exceeds the maximum adhesion force,the wheel will produce sliding that will extend the braking distances and damage the wheel tread.It not only reduces the ride comfort,but also brings additional impact to the truck parts,and shortened expectant life.To avoid this phenomenon,using the computer-controlled anti-sliding devices to test and control the whole process on the brake,will glide,relieve,and re-adhesion.Through the use of Simul...