吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (3): 946-952.doi: 10.13229/j.cnki.jdxbgxb201503038

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等效线束法在汽车线束时域辐射敏感度分析中的应用

高印寒1, 安占扬2, 王举贤2, 王天皓1, 刘长英2, 张俊东1   

  1. 1.吉林大学 汽车仿真与控制国家重点实验室,长春130022;
    2.吉林大学 仪器科学与电气工程学院,长春130061
  • 收稿日期:2014-09-19 出版日期:2015-05-01 发布日期:2015-05-01
  • 通讯作者: 刘长英(1974-),男,副教授,博士.研究方向:车辆测试技术及仪器.E-mail:liuchangy@jlu.edu.cn E-mail:yinhan@jlu.edu.cn
  • 作者简介:高印寒(1951-),男,教授,博士生导师.研究方向:车辆测试技术及仪器.
  • 基金资助:
    高等学校博士学科点专项科研基金项目(2011061110059); 吉林省科技发展计划重点项目(20110326)

Application of equivalent cable bundle method in time domain radiation sensitivity of automotive cable harness

GAO Yin-han1, AN Zhan-yang2, WANG Ju-xian2, WANG Tian-hao1, LIU Chang-ying2, ZHANG Jun-dong1   

  1. 1.State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China;
    2.College of Instrumentation& Electrical Engineering,Jilin University,Changchun 130061,China
  • Received:2014-09-19 Online:2015-05-01 Published:2015-05-01

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摘要： 首先,将仿真所观测的某一线缆单独作为一组,其余的线缆按照共模阻抗和线束端接阻抗相对大小进行分组,再将每一组的若干根线缆等效为一根线缆。然后,求取等效后的简化线束模型的单位长度电感矩阵和电容矩阵以及终端阻抗的等效阻值,并且求取等效模型中各线束的位置坐标。最后,将这些参数代入时域有限差分算法进行求解。本文通过含有14根线缆的汽车线束的数值试验对该方法的有效性进行了验证,试验结果表明:完整模型对于线缆1、4、8、11、14的终端感应电压的仿真时间均约为11 s,而等效后的简化模型对上述线缆的终端感应电压的仿真时间约为5.5 s,计算速度提高了50%。等效线束模型和时域有限差分方法的结合在满足计算精度的要求下,提高了汽车线束的时域辐射敏感度仿真效率。

关键词: 车辆工程, 电磁兼容, 汽车线束, 等效线束法, 辐射敏感度, 时域有限差分

Abstract: An Equivalent Cable Bundle (ECB) method is developed in this paper. First, a cable observed by simulation is taken as an individual group, and all other conductors of the complete cable bundle are sorted into four groups with respect to the modulus of the terminal loads. Then the unit length inductance matrix and unit length capacitance matrix, the equivalent resistance of the terminal impedance of the simplified ECB model are obtained; the position coordinates of the cable harness in the equivalent model are calculated. Finally, the finite difference time domain algorithm is used to calculate the results with these parameters. The efficiency of this method is verified by numerical experiments of automotive cable harness consisting of 14 conductors. Results show that the computing time for the terminal induction voltage of the integrity models of cable 1, 4, 8, 11 and 14 is all about 11 s; while the computing time of the above terminal induction voltage of the simplified ECB model is all about 5.5 s, that the computing speed is increased by 50%. The ECB method and the finite difference time domain method satisfy the calculation precision and improve the simulation efficiency of automotive cable harness time domain radiation sensitivity.

Key words: vehicle engineering, electromagnetic compatibility, automotive cable harness, equivalent cable bundle method(ECBM), radiation sensitivity, finite difference time domain(FDTD)

中图分类号: 

  • TM934.4
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