本文以传输线理论为基础，以电磁兼容机理为主线，对工业互联电缆抗干扰技术进行了研究，系统地分析了电缆线间的串扰及其屏蔽抗干扰措施。 首先根据电缆的“长”、“短”，运用集总参数和分布参数理论建立了低频、高频时电缆串扰模型，计算单根、双根、及多根情况下电缆的电容、电感、电阻分布参数。其次针对工业电缆屏蔽抗干扰技术，分析了高频、低频时电场和磁场屏蔽理论模型，得出电缆屏蔽效能与屏蔽层接地方式以及屏蔽层阻抗的关系，计算了工业互联电缆中常用屏蔽层的转移阻抗。 在上述基础上，建立双电缆串扰仿真模型，计算其串扰耦合频率响应，用MATLAB编制相应的串扰仿真程序进行仿真，分析串扰耦合电压与电缆结构参数、系统工作频率的关系，得出相应的互联电缆抗干扰措施。最后根据仿真模型，自制了同轴电缆电磁耦合测试装置，测试注入信号为正弦波、方波时，电缆各个结构参数不同情况下的串扰波形，以及屏蔽层接地方式对串扰大小的影响，并将实验数据与仿真结果进行比较，基本上达到了很好的一致性，验证了理论分析的正确性。

Using the transmission line theory and electromagnetic compatibility, this dissertation mainly researches anti-interference technology in interconnecting system of industry, and analyses the crosstalk in interconnecting cables and methods of shielding anti-interference technology. Firstly, according to the length of cables, by establishing the cable crosstalk models in low and high frequency respectively with lumped parameter and distributed parameter theories, distributed parameters of capacitance, inductance and resistance are estimated under various conditions, single, double and multi-cables. Then using shielding anti-interference technology of industrial to analyze the shielding models of electric field and magnetic field in low and high frequency, works out the relationships among shielding efficiency, earthing mode and impedance, and calculates the common shielding transfer impedance in industry. Based on above analysis, double-cable crosstalk simulation model is built to calculate its crosstalk coupling frequency domain response. With MATLAB to simulate this model, appropriate anti-interference method of interconnecting cables is derived from analyzing relationships among crosstalk coupling voltage, cable structure parameter and working frequency. Finally, the electromagnetic coupling testing device of coaxial cable is made, by injecting different signals with coaxial cable electromagnetic model, sinusoidal wave and square wave, gets respective crosstalk waveforms and the impact of shielding earthing mode on crosstalk. Comparing the experimental data and simulation result, both achieve to the remarkable consistency, and validate the theory as well.