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摘要

线束在实际布线过程中存在空间布局特性, 其芯线数目大、空间任意弯曲以及位置不确定等特点给线束耦合干扰的建模与分析带来了挑战. 不确定性全线束模型耦合干扰的数值仿真对计算能力提出了更高要求, 甚至无法进行有效计算. 因此, 本文提出了不确定性捆扎弧形线束电磁耦合效应的广义简化建模方法, 考虑了捆扎线束内导线相对位置的不确定性. 基于高斯分布和样条插值方法, 建立了不确定性捆扎线束内导线的位置, 根据多导体传输线理论确立了等效线束的几何截面结构参数, 通过圆弧和正弦捆扎线束数值算例验证了本文方法的有效性.

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Abstract

The cable harness provides a main gateway for electromagnetic interference(EMI) in electromechanical system. The unreasonable electromagnetic compatibility (EMC) design of cable harness will produce EMI to other on-board electronic equipment, bringing great safety risks to the system. Theoretical research and engineering practice indicate that most of the electromechanical systems cannot satisfy EMC standards, which can be attributed to the EMI generated by cables. As for the eletromagnetic(EM) illumination analysis, reliably and efficiently generating a full numerical model of cable harness is becoming more prominent for the EMC designers. Therefore, it is necessary to develop a more effective method to solve the modeling problem of cable harness. In the practical application, the cable harness has the characteristics of spatial layout, and its characteristics such as “large number of core wires”, “arbitrary curvature of space” and “randomness of wiring” bring challenges to the modeling of EM coupling to cable harness. The numerical simulation of the whole cable harness model requires severe conditions for computational resource and even makes the EM coupling analysis impossible. Thus, considering the uncertainty of wire position, this paper proposes a generalized simplified modeling method for the EM coupling effect of uncertainty strapping cable harness. Firstly, the Gaussian distribution and spline interpolation are used to determine the location of the core conductors in the random bundling. Then, the distribution parameters of the cable harness at different positions are established by using the transposition relationship between the subsegments of the wires. Finally, the effectiveness of the proposed method is verified by numerical examples of the arc-shaped and sine-shaped harness. In conclusion, this paper proposes a generalized simplification technique to model the EM illumination on cable harness with uncertainty wiring factors. By grouping the conductors together, the required computation time is markedly reduced and the complexity of modeling the completely cable harness is significantly simplified within a good accuracy. The proposed method provides a way of solving the modeling problem caused by “uncertainty strapping” of the complex wiring harnesses in electromechanical systems.

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作者及机构信息

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通信作者:李高升,gaosheng7070@vip.163.com

基金项目:国家自然科学基金(批准号: 51675086)和中国博士后科学基金(批准号: 2020M672482)资助的课题

Authors and contacts

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Corresponding author:Li Gao-Sheng,gaosheng7070@vip.163.com

Funds:Project supported by the National Natural Science Foundation of China (Grant No. 51675086) and the China Postdoctoral Science Foundation (Grant No. 2020M672482)

文章全文: translate this paragraph

参考文献

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施引文献

下载: 全尺寸图片幻灯片

导线编号	1	2	3	4	5	6	7
坐标x,y	–8, 4	–8, 0	–8, –4	–4, 8	–4, 4	–4, 0	–4, 4
导线编号	8	9	10	11	12	13	14
坐标x,y	–4, –8	0, 4	0, 4	0, 0	0, –4	0, –8	4, 8
导线编号	15	16	17	18	19	20	21
坐标x,y	4, 4	4, 0	4, –4	4, –8	8, 4	8, 0	8, –4

下载: 导出CSV

线束终端		FSV
线束终端		ADM_tot	FDM_tot	GDM_tot
圆弧线束	近端	0.265/good	0.181/very good	0.317/good
圆弧线束	远端	0.289/good	0.200/very good	0.345/good
正弦线束	近端	0.313/good	0.172/very good	0.376/good
正弦线束	远端	0.290/good	0.157/very good	0.350/good

下载: 导出CSV

模型	圆弧全模型	圆弧简化模型	正弦全模型	正弦简化模型
计算时间/s	3222	420	2919	336

下载: 导出CSV

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