吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (2): 747-753.doi: 10.13229/j.cnki.jdxbgxb20191009

• 通信与控制工程 • 上一篇    

一种多导体传输线串扰不确定性问题的计算方法

杨开宇1(),刘伟1,王天皓2(),于显利3,高印寒1,马喜来4   

  1. 1.吉林大学 汽车工程学院，长春 130022
    2.吉林大学 仪器科学与电气工程学院，长春 130026
    3.吉林大学 地球探测科学与技术学院，长春 130026
    4.中国第一汽车股份有限公司 商用车电子电气开发部，长春 130011
  • 收稿日期:2019-11-02 出版日期:2021-03-01 发布日期:2021-02-09
  • 通讯作者: 王天皓 E-mail:yangky@jlu.edu.cn;wangtianhao@jlu.edu.cn
  • 作者简介:杨开宇（1971-），男，副教授，博士.研究方向：汽车电子，电磁兼容及车辆测试技术.E-mail:yangky@jlu.edu.cn
  • 基金资助:
    国家重点研发计划项目(2017YFC0602000);国家自然科学基金项目(51707080);吉林省科技发展计划项目(20180101032JC)

A calculation method for uncertainty of crosstalk in multi⁃conductor transmission line

Kai-yu YANG1(),Wei LIU1,Tian-hao WANG2(),Xian-li YU3,Yin-han GAO1,Xi-lai MA4   

  1. 1.College of Automotive Engineering，Jilin University，Changchun 130022，China
    2.College of Instrument Science and Electrical Engineering，Jilin University，Changchun 130026，China
    3.College of Geo-Exploration Science and Technology，Jilin University，Changchun 130026，China
    4.Commerical Vehicle Institute Electronics Department，FAW Jiefang，Changchun 130011，China
  • Received:2019-11-02 Online:2021-03-01 Published:2021-02-09
  • Contact: Tian-hao WANG E-mail:yangky@jlu.edu.cn;wangtianhao@jlu.edu.cn

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摘要：

针对实际问题中传输线对地高度、相对距离和端接阻抗等参数表现出不确定性时的情况，提出了一种多导体传输线串扰不确定性问题的计算方法。该方法首先通过建立参数不确定的多导体传输线模型，依据多导体传输线理论，考虑模型具有安全阈值，结合基于最可能失效点的随机响应面法完成对多导体传输线模型失效概率的计算。通过比较，该方法得到的模型失效概率与蒙特卡罗法的计算结果基本一致，但其计算效率得到了大幅提升，并且能方便地得到模型串扰的统计矩，从而实现对汽车等复杂系统中的线束或电路板微带线等传输线电磁兼容性能的高效准确预测。

关键词: 多导体传输线, 串扰, 随机响应面法, 汽车电子, 电磁兼容

Abstract:

Aiming at the problem that the parameters such as the height， relative distance and termination impedance of the transmission line show uncertainty in the practice， a calculation method for the uncertainty of crosstalk in multi-conductor transmission line is proposed. Firstly， the multi-conductor transmission line model with uncertain parameters is established. Then， according to the multi-conductor transmission line theory， considering that the model has a safety threshold， the random response surface method based on the most likely failure point is used to calculate the failure probability of the multi-conductor transmission line model. By comparison， the failure probability of the model obtained by this method is basically consistent with the calculation result of Monte Carlo method， but its calculation efficiency is greatly improved， and the statistical moment of model crosstalk can be conveniently obtained， so as to realize efficient and accurate prediction of electromagnetic compatibility performance of transmission lines， such as wire harness or circuit board microstrip line in complex systems， such as automobiles.

Key words: multi-conductor transmission line, crosstalk, random response surface method, vehicle electronics, electromagnetic compatibility

中图分类号: 

  • TM930.11

图1

三导体传输线单位长度等效电路"

图2

三导体传输线实际电路模型"

图3

MTL方程计算和CST软件仿真分别得到的固定参数电路模型近端串扰电压"

图4

MCS得到的近端串扰电压曲线"

图5

空间变换及MPP点几何特征"

图6

MPP-SRSM计算步骤"

表1

103~104?Hz频段不同可靠度方法对比"

项目FORMMPP-SRSMMCS
P=(Vmax>10.5 mV)0.01020.00830.0084
计算步骤(函数调用次数)172172+20100000

表2

105~106?Hz频段不同可靠度方法对比"

项目FORMMPP-SRSMMCS
P=(Vmax>103 mV)0.00410.00360.0036
计算步骤(函数调用次数)6969+20100000

图7

MPP-SRSM计算的局部统计矩：均值"

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