线缆串扰耦合模型方法研究
发布时间：2018-08-19 19:02
【摘要】：随着电子信息技术的迅速发展,系统之间和设备之间的互连空间越来越小、互连结构越来越复杂、互连线缆越来越多,大量线缆的相互串扰使得有限空间中的电磁环境变得异常复杂。为了保证电子电气系统和设备的正常运行,研究线缆的耦合特性已经成为工程电磁兼容问题中一个重要方向。对线缆耦合的计算和仿真也是电磁兼容预测技术中的一个重要方面,具有实际应用价值。本文主要研究线缆串扰的频域耦合模型方法,对耦合模型的求解有以下几个过程：提取模型的分布参数、建立模型的方程、求解方程、模型的扩展、复杂模型的简化。本文分别从传输线理论、BLT方程以及线束等效简化方法三个方面研究了无耗多导体传输线、屏蔽线以及多导体传输线网络频域上的串扰耦合问题。多导体传输线的分布参数的计算是建立串扰耦合模型的基础,本文在数值方法即矩量法的基础上分别进一步研究三种典型线缆结构的分布电容矩阵的收敛性及对称性问题,分析匹配点的选取原则,给出匹配点的最佳分配方案。基于分布参数以及多导体传输线方程,通过模量解耦和链参数方法给出针对不同终端条件下的方程的解。推导单线与屏蔽线耦合公式并建立耦合模型。运用传输线理论,在管道和节点概念的基础上,引入了多导体传输线网络的导纳方程。分别使用仿真和并搭建实验平台验证上述模型方法的正确性。推导频域多导体传输线的BLT方程、频域屏蔽线BLT方程,进一步研究了线缆网络的BLT超矩阵方程并给出改进的散射超矩阵的构造方法,将超矩阵方程其应用于典型线缆网络包括树形网络、星形网络和环形网络。最后在裸线线束简化基础上,调整等效步骤建立带绝缘介质的线束的等效简化串扰模型。进一步研究并建立了线束网络的等效简化模型,给出了等效简化步骤,并用传输线理论和BLT方程验证了上述模型方法的正确性,得出简化方法在满足一定精度情况下可大大降低计算时间和计算内存。
[Abstract]:With the rapid development of electronic information technology, the interconnection space between systems and devices is becoming smaller and smaller, the interconnection structure is becoming more and more complex, and the number of interconnection cables is increasing. A large number of cable crosstalk makes the electromagnetic environment in finite space extremely complex. In order to ensure the normal operation of electronic and electrical systems and equipment, the study of cable coupling characteristics has become an important direction of engineering EMC. The calculation and simulation of cable coupling is also an important aspect of EMC prediction technology and has practical application value. In this paper, the frequency-domain coupling model method of cable crosstalk is studied. The solution of the coupling model is as follows: extracting the distribution parameters of the model, establishing the equation of the model, solving the equation, extending the model and simplifying the complex model. In this paper, the crosstalk coupling problems in frequency domain of lossless multi-conductor transmission lines, shielded lines and multi-conductor transmission line networks are studied from the three aspects of the transmission line theory, BLT equation and the equivalent simplification method of the beam. The calculation of the distribution parameters of multi-conductor transmission lines is the basis of establishing a crosstalk coupling model. In this paper, the convergence and symmetry of the distributed capacitance matrices of three typical cable structures are studied respectively on the basis of the numerical method or the method of moments. The selection principle of matching points is analyzed and the optimal allocation scheme of matching points is given. Based on the distributed parameters and the multi-conductor transmission line equations, the solutions of the equations under different terminal conditions are given by means of modulus decoupling and chain parameter methods. The coupling formula of single line and shielding line is derived and the coupling model is established. Based on the concept of pipeline and node, the admittance equation of multi-conductor transmission line network is introduced by means of transmission line theory. Simulation and experimental platform are used to verify the correctness of the model. The BLT equation of multiconductor transmission line in frequency domain and the BLT equation of shielding line in frequency domain are derived. The BLT supermatrix equation of cable network is further studied and the method of constructing improved scattering supermatrix is given. The hypermatrix equation is applied to typical cable networks, including tree network, star network and ring network. Finally, based on the simplification of bare wire harness, the equivalent simplified crosstalk model of wire harness with insulator is established by adjusting the equivalent step. Furthermore, the equivalent simplified model of wire harness network is studied and established, and the equivalent simplification steps are given. The correctness of the above model is verified by transmission line theory and BLT equation. It is concluded that the simplified method can greatly reduce the computing time and memory under certain precision.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN03
本文编号：2192536
[Abstract]:With the rapid development of electronic information technology, the interconnection space between systems and devices is becoming smaller and smaller, the interconnection structure is becoming more and more complex, and the number of interconnection cables is increasing. A large number of cable crosstalk makes the electromagnetic environment in finite space extremely complex. In order to ensure the normal operation of electronic and electrical systems and equipment, the study of cable coupling characteristics has become an important direction of engineering EMC. The calculation and simulation of cable coupling is also an important aspect of EMC prediction technology and has practical application value. In this paper, the frequency-domain coupling model method of cable crosstalk is studied. The solution of the coupling model is as follows: extracting the distribution parameters of the model, establishing the equation of the model, solving the equation, extending the model and simplifying the complex model. In this paper, the crosstalk coupling problems in frequency domain of lossless multi-conductor transmission lines, shielded lines and multi-conductor transmission line networks are studied from the three aspects of the transmission line theory, BLT equation and the equivalent simplification method of the beam. The calculation of the distribution parameters of multi-conductor transmission lines is the basis of establishing a crosstalk coupling model. In this paper, the convergence and symmetry of the distributed capacitance matrices of three typical cable structures are studied respectively on the basis of the numerical method or the method of moments. The selection principle of matching points is analyzed and the optimal allocation scheme of matching points is given. Based on the distributed parameters and the multi-conductor transmission line equations, the solutions of the equations under different terminal conditions are given by means of modulus decoupling and chain parameter methods. The coupling formula of single line and shielding line is derived and the coupling model is established. Based on the concept of pipeline and node, the admittance equation of multi-conductor transmission line network is introduced by means of transmission line theory. Simulation and experimental platform are used to verify the correctness of the model. The BLT equation of multiconductor transmission line in frequency domain and the BLT equation of shielding line in frequency domain are derived. The BLT supermatrix equation of cable network is further studied and the method of constructing improved scattering supermatrix is given. The hypermatrix equation is applied to typical cable networks, including tree network, star network and ring network. Finally, based on the simplification of bare wire harness, the equivalent simplified crosstalk model of wire harness with insulator is established by adjusting the equivalent step. Furthermore, the equivalent simplified model of wire harness network is studied and established, and the equivalent simplification steps are given. The correctness of the above model is verified by transmission line theory and BLT equation. It is concluded that the simplified method can greatly reduce the computing time and memory under certain precision.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN03
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