【摘要】 叙述工业过程控制系统的抗噪声技术 ;阐述形成噪声的原因 ,包括电容性耦合、电感性耦合、电磁辐射耦合和公共阻抗耦合 ;还阐述了抑制噪声的各种方法 ,包括噪声源的抑制、电缆的选型、接地、数字滤波和看门狗技术。正确地解决噪声问题 ,将大大有助于控制系统的调整和运行更多还原

【Abstract】 The anti noise technique in industrial process control system is introduced.The reasons caused noise such as electric coupling,magnetic coupling,electric magnetic noise and resistance coupling are presented.The anti noise technique such as cable selection, grounding,digital filter and watchdog are presented too.If the anti noise problems are solved properly,it will be significant help for debugging and running of control system.更多还原