一种分析线束串扰的等效方法

摘要

使用传统方法分析线束串扰存在内存消耗大、计算时间长的问题，研究其快速仿真技术有着重要的工程应用价值。提出了一种快速仿真线束串扰的“等效线束”方法，其基本思想是：除干扰线和受扰线外，剩余线缆（不论是属于线束的还是不属于线束的）按照线束的共模阻抗与线束端接阻抗相对大小进行分组，每一组用一根等效线缆表示，并保证等效线缆间不发生重叠。缩减后的多导体传榆线串扰仿真模型，因等效线束的数目远少于实际线束中线缆的数目，从而能实现线束串扰的快速仿真。仿真结果表明该方法是合理可行的。%Traditional methods for analyzing the crosstalk of cable bundles consume a lot of memory and computation time. The equivalent cable bundle method pro- posed in this paper reduces the requirements of time and memories for analyzing the crosstalk of cable bundles by reducing the complexity of the cable bundle models. Comparing the terminal loads with the common mode impedance, conductors of the complete cable bundle are separated into four groups, and each group of conductors turns to be an equivalent conductor without overlapping with other equivalent con- ductors. The number of conductors of the equivalent cable bundle is far less than that of the complete wire harness. Simulation results show good agreement compa- ring the equivalent cable bundles with the complete cable harness.