一种确定线缆串扰临界布线间距的计算方法

本发明公开了一种确定线缆串扰临界布线间距的计算方法，涉及电磁兼容技术领域，具体技术方案为：(1)定义串扰随布线间距变化的函数；(2)以布线间距S为自变量，对串扰电压函数进行求导得到K值函数；(3)定义临界点处的K0值；(4)将K0代入K值函数中求解得到临界布线间距值。基于串扰机理，研究了布线参数对串扰的影响，确定了线缆电压源引起的串扰临界布线间距。推导了串扰值与布线间距关系函数，并得到串扰随间距变化规律曲线。根据该函数定义了串扰曲线上的临界点及临界分布间距，分析了线缆长度、对地高度等参数对临界布线间距的影响。通过研究线缆串扰影响规律，直观研究了线缆布线机理，对线缆的排布，根本上减少串扰信号的干扰。 The invention discloses a calculation method for determining a critical wiring interval of cable crosstalk, and relates to the technical field of electromagnetic compatibility. The specific technicalscheme is as follows: (1) defining a function of crosstalk changing with the wiring interval; (2) using the wiring interval S as an independent variable to derive a crosstalk voltage function to obtain a K value function; (3) defining a K0 value at a critical point; and (4) substituting K0 into the K value function to obtain a critical wiring interval value. Based on the crosstalk mechanism, the influence of wiring parameters on the crosstalk is studied, and the critical wiring interval of the crosstalk caused by a c