描述
在计算机控制系统的现场往往有许多强电设备,它们在起动和生产过程中将产生干扰电磁场,另外还有来自空间传播的电磁波和雷电干扰,以及高压输电线周围交变磁场的影响等。干扰传播途径主要有:电场耦合、磁场耦合、公共阻抗耦合。
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