有缝线路上钢轨探伤车检测速度规划方法
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摘要
基于钢轨探伤车超声波反射体静态检出原理,通过分析探轮对中偏差和喷水密度2个因素引起的超声波衰减规律,得到检测速度对这2个因素的影响结果,从而建立反映检测速度、探轮对中偏差、喷水密度与超声波反射体检出效果之间关系的超声波反射体检出效果模型。基于动态步长调节法,在满足检测区间限速的基础上,设计有缝线路的检测速度规划方法,即在多次检测过程中记录单个超声波反射体处的探轮对中偏差和检测速度,分析钢轨中该超声波反射体的检出结果,采用动态步长调节法对该超声波反射体的下次检测速度进行规划,将线路中各个超声波反射体处检测速度进行连接,从而规划出该线路中各点检测速度的方法。在某特定区间进行3次检测和2次检测速度规划的试验结果表明,该方法是有效可行的,且能提高已知超声波反射体的检出率。
Based on the static detection principle of the ultrasonic reflector of rail flaw detection car,by analyzing the attenuation law of ultrasonic wave caused by the two factors of probe wheel alignment deviation and water spray density,the influence of detection speed on these two factors was obtained.Accordingly,the detection effect model of ultrasonic reflector was built,which reflected the relationship between detection speed,probe wheel alignment deviation,water spray density and the detection effect of ultrasonic reflector.Based on the dynamic step adjustment method,and on the basis of satisfying the speed limit in the detection interval,the detection speed planning method of the jointed track was designed.Namely,the probe wheel alignment deviation and detection speed at the single ultrasonic reflector were recorded in the multiple detection process,the detection results of the ultrasonic reflector in the rail were analyzed.The dynamic step adjustment method was adopted to plan the next detection speed of the ultrasonic reflector.The detection speeds of the ultrasonic reflectors in the line were connected to plan the detection speed of each point in the line.The results of three tests and two tests for speed planning in a specific interval show that the proposed method is effective and feasible,and can improve the detection rate of the known ultrasonic reflectors.
Based on the static detection principle of the ultrasonic reflector of rail flaw detection car,by analyzing the attenuation law of ultrasonic wave caused by the two factors of probe wheel alignment deviation and water spray density,the influence of detection speed on these two factors was obtained.Accordingly,the detection effect model of ultrasonic reflector was built,which reflected the relationship between detection speed,probe wheel alignment deviation,water spray density and the detection effect of ultrasonic reflector.Based on the dynamic step adjustment method,and on the basis of satisfying the speed limit in the detection interval,the detection speed planning method of the jointed track was designed.Namely,the probe wheel alignment deviation and detection speed at the single ultrasonic reflector were recorded in the multiple detection process,the detection results of the ultrasonic reflector in the rail were analyzed.The dynamic step adjustment method was adopted to plan the next detection speed of the ultrasonic reflector.The detection speeds of the ultrasonic reflectors in the line were connected to plan the detection speed of each point in the line.The results of three tests and two tests for speed planning in a specific interval show that the proposed method is effective and feasible,and can improve the detection rate of the known ultrasonic reflectors.
引文
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[10]孙次锁,张玉华.基于智能识别与周期检测的钢轨伤损自动预警方法研究[J].铁道学报,2018,40(11):140-146.(SUN Cisuo,ZHANG Yuhua.Research on Automatic Early Warning Method for Rail Flaw Based on Intelligent Identification and Periodic Detection[J].Journal of the China Railway Society,2018,40(11):140-146.in Chinese)
[2]杨国涛.钢轨探伤车探伤作业系统自主化研究[J].铁道建筑,2016,56(9):124-126.(YANG Guotao.Autonomous Research on Rail Detection Operation System of Rail Detection Car[J].Railway Engineering,2016,56(9):124-126.in Chinese)
[3]王开云,刘鹏飞.铁路货车通过曲线轨道时的非线性运动稳定性研究[J].中国铁道科学,2011,32(2):85-89.(WANG Kaiyun,LIU Pengfei.Research on the Nonlinear Hunting Stability of Railway Freight Car on Curved Track[J].China Railway Science,2011,32(2):85-89.in Chinese)
[4]孙善超,王卫东,刘金朝,等.基于车辆系统稳定性分析的晃车现象研究[J].中国铁道科学,2012,33(2):82-88.(SUN Shanchao,WANG Weidong,LIU Jinzhao,et al.Study of Carbody’s Severe Vibration Based on Stability Analysis of Vehicle System[J].China Railway Science,2012,33(2):82-88.in Chinese)
[5]秦怀冰.钢轨探伤车漏检伤损原因分析及对策研究[J].铁道建筑,2016,56(12):117-120.(QIN Huaibing.Cause Analysis and Its Countermeasure Research of Flaw Missing Detection by Flaw Detection Car[J].Railway Engineering,2016,56(12):117-120.in Chinese)
[6]刘晓东,李长春,沈健,等.高速钢轨探伤车自动对中控制系统的设计与实现[J].铁道学报,2005,27(6):108-111.(LIU Xiaodong,LI Changchun,SHEN Jian,et al.Design and Operation of Auto Tracking Control System of High-Speed Track Inspection Car[J].Journal of the China Railway Society,2005,27(6):108-111.in Chinese)
[7]钟艳春.钢轨探伤车激光自动对中系统研制[J].铁道建筑,2016,56(10):121-124.(ZHONG Yanchun.Research and Manufacture of Laser Automatic Alignment System for Rail Flaw Detection Car[J].Railway Engineering,2016,56(10):121-124.in Chinese)
[8]石永生,张玉华,李培,等.高速铁路钢轨探伤车动态灵敏度设置探讨[J].铁道建筑,2014,54(9):113-116.(SHI Yongsheng,ZHANG Yuhua,LI Pei,et al.Exploring on Dynamic Sensitivity Setting for Rail Flaw Detection Vehicle Used on High Speed Railway[J].Railway Engineering,2014,54(9):113-116.in Chinese)
[9]孙次锁,刘军,秦勇,等.基于深度学习的钢轨伤损智能识别方法[J].中国铁道科学,2018,39(5):51-57.(SUN Cisuo,LIU Jun,QIN Yong,et al.Intelligent Detection Method for Rail Flaw Based on Deep Learning[J].China Railway Science,2018,39(5):51-57.in Chinese)
[10]孙次锁,张玉华.基于智能识别与周期检测的钢轨伤损自动预警方法研究[J].铁道学报,2018,40(11):140-146.(SUN Cisuo,ZHANG Yuhua.Research on Automatic Early Warning Method for Rail Flaw Based on Intelligent Identification and Periodic Detection[J].Journal of the China Railway Society,2018,40(11):140-146.in Chinese)