The shielding and grounding is the important way to restrain disturbance.Right shielding and good grounding is important means to stabilize work of NC system and to obviate the disturbances.

• 屏蔽和接地是抑制干扰的重要方法,正确使用屏蔽和良好的接地则是使数控系统稳定运行、消除干扰的重要措施。