城轨车辆电制动滑行故障分析与优化策略研究  

Analysis and Optimization Strategy Research on Electric Braking Skidding Fault of Urban Rail Vehicles

作　　者：吴云飞 牟蓉 陆远基 王龙 刘雄 WU Yunfei;MU Rong;LU Yuanji;WANG Long;LIU Xiong(Zhuzhou CRRC Times Electric Co.,Ltd.,Zhuzhou 412001,China)

机构地区：[1]株洲中车时代电气股份有限公司,湖南株洲412001

出　　处：《铁道车辆》2023年第5期88-92,共5页Rolling Stock

摘　　要：针对城轨车辆在雨雪天气制动力不足现象进行了数据分析,发现车辆频繁出现制动力不足是由于动车电制动滑行造成的,而电制动滑行原因是雨雪天气高速、大级位制动时动车电制动需求黏着系数大于可用黏着系数。根据故障原因,提出了在雨雪模式下将50~80 km/h速度时的电制动包络线由恒力改为自然特性,并在该模式下由原来的优先发挥动车电制动策略改为网络系统将整车制动需求值的三分之二作为电制动需求值发送给动车牵引控制单元的优化策略。最后,更新网络系统与牵引控制单元软件后进行了试验验证,结果表明,优化电制动包络线和整车制动分配策略后,电制动滑行情况得到了明显改善,车辆在雨雪天制动再未出现制动力不足现象。According to the data analysis of insufficient braking force of urban rail vehicles in rainy and snowy weather,it is found that frequent insufficient braking force is caused by electric braking skidding of motor cars,and the reason for skidding is that the adhesion coefficient required for electric braking of high-speed trains during heavy braking in rainy and snowy weather is greater than the available adhesion coefficient.Based on this,the paper proposes an optimization strategy to change the electric braking envelope line at the speed of 50~80 km/h from constant force to natural characteristic in rain and snow mode.In this mode,the original strategy of prioritizing the use of electric braking for motor cars has been changed to an optimization strategy where the network system sends two-thirds of the entire vehicle braking demand value as the electric braking demand value to the traction control unit for motor cars.After updating the network system and traction control unit software,the test verification is carried out.The results show that after optimizing the electric brake envelope lines and the entire vehicle brake distribution strategy,the electric braking skidding situation has been significantly improved,and no insufficient braking force occurs in rainy and snowy days again.

关 键 词：城轨车辆 电制动 滑行 包络线 雨雪模式 

分 类 号：U270.35[机械工程—车辆工程]