摘要
当前地铁车辆空气制动技术是将制动缸压力作为最终控制目标,然而受到制动摩擦材料自然特性的限制,制动过程中实际瞬时减速度波动相对较多;制动摩擦材料在实际使用过程中的摩擦特性是动态变化的,制动控制参数中采用固定计算摩擦系数并不能真实反映摩擦性能的变化。减速度控制技术在制动控制上的应用,将使地铁车辆空气制动控制技术实现从制动缸压力间接控制减速度的粗放型控制到制动减速度作为直接控制目标的精细化控制的转变。减速度控制技术使地铁车辆制动性能更稳定。
At present,air brake technology of metro vehicles takes brake cylinder pressure as the ultimate control target,which is limited by the natural characteristics of brake friction materials,and the actual instantaneous deceleration fluctuates relatively more in the process of braking,the friction characteristics of the brake friction materials in the actual use process are dynamic,and the static calculation of the friction coefficient in the brake control parameters cannot truly refl ect the fl uctuations in its friction properties.The application of deceleration control technology in braking control makes the air braking control technology of metro vehicles realize the transformation from extensive control of deceleration indirectly controlled by brake cylinder pressure to the fine control of braking deceleration as direct control target.Deceleration control technology makes the braking performance of metro vehicles more stable.
出处
《现代城市轨道交通》
2019年第11期39-46,共8页
Modern Urban Transit
关键词
地铁车辆
减速度控制
制动控制
metro vehicle
deceleration control
brake control
