摘要
噪声对工业设备以及自动化系统的安全性、可靠性、稳定性等许多方面都有着严重的影响。在分析噪声的基础上,较全面地介绍了公共阻抗耦合的噪声及其危害,讨论分析了抑制该噪声的方法。实验表明一点接地、多点接地、减小公共阻抗可以有效地抑制这种噪声,一点接地法适用于低频电路,多点接地法适用于高频电路。
Noise seriously affects on many aspects of the industrial equipment and automation systems, such as security, reliability, stability, etc. On the basis of analysis of noise, the noise caused by common impedance coupling and its harmfulness are introduced comprehensively. The suppression methods are discussed and analyzed, The experiments show that one point grounding, multi-point grounding, and reducing common impedance are useful to suppress such noise. One point grounding is suitable for low frequency circuits, while multi-point grounding is suitable for high frequency circuits.
出处
《自动化仪表》
CAS
2007年第1期49-51,共3页
Process Automation Instrumentation
关键词
公共阻抗耦合
噪声
接地
阻抗
Coupling of common impedance Noise Grounding Impedance
