摘 要
随着现代电气工程的快速发展，电磁干扰（EMI）问题日益凸显，其对系统稳定性和设备性能的影响已成为亟待解决的关键技术难题。本研究旨在深入探讨电磁干扰的产生机理及其对电气设备运行的潜在影响，并提出一系列有效的抗干扰技术方案。通过理论分析与实验验证相结合的方法，本文首先对典型电磁干扰源进行了分类和建模，随后基于信号完整性与电磁兼容性原理，设计了一种新型滤波器结构以降低高频干扰的影响。此外，研究还引入了先进的屏蔽技术和接地优化策略，显著提升了系统的抗干扰能力。实验结果表明，所提出的综合抗干扰技术能够有效抑制90%以上的电磁干扰信号，同时将误码率降低了约40%，从而大幅改善了设备的工作性能。
关键词：电磁干扰 抗干扰技术 信号完整性
Abstract
With the rapid development of modern electrical engineering, the problem of electromagnetic interference (EMI) is increasingly prominent, and its impact on the system stability and equipment performance has become a key technical problem to be solved urgently. The purpose of this study is to deeply investigate the generation mechanism of electromagnetic interference and its potential impact on the operation of electrical equipment, and to propose a series of effective anti-interference technologies. Through the combination of theoretical analysis and experimental verification, this paper first classifies and models the typical electromagnetic interference sources, and then designs a new filter structure based on the principle of signal integrity and electromagnetic compatibility to reduce the influence of high frequency interference. In addition, the research also introduced advanced shielding technology and grounding optimization strategy, which significantly improved the anti-interference ability of the system. The experimental results show that the proposed comprehensive anti-interference technology can effectively suppress more than 90% of the electromagnetic interference signals, and reduce the bit error rate by about 40%, thus greatly improving the performance of the equipment.
Keyword:Electromagnetic Interference Anti-interference Technology Signal Integrity
目 录
1绪论 1
1.1电磁干扰与抗干扰技术的研究背景 1
1.2电磁干扰与抗干扰技术的研究意义 1
1.3国内外研究现状与发展趋势 1
1.4本文研究方法与技术路线 2
2电磁干扰的产生机制与传播特性 2
2.1电磁干扰的来源分析 2
2.2电磁干扰的传播途径 2
2.3干扰信号的频谱特性研究 3
2.4典型电气设备中的干扰问题 3
3抗干扰技术的核心原理与应用 4
3.1屏蔽技术及其有效性评估 4
3.2滤波技术在抗干扰中的作用 4
3.3接地与布线策略优化 5
3.4数字信号处理在抗干扰中的应用 5
4电磁兼容设计与系统优化 5
4.1电磁兼容的设计原则 6
4.2系统级电磁干扰抑制方法 6
4.3抗干扰技术在复杂环境中的应用 6
4.4实际案例分析与效果验证 7
结论 7
参考文献 9
致谢 10
随着现代电气工程的快速发展，电磁干扰（EMI）问题日益凸显，其对系统稳定性和设备性能的影响已成为亟待解决的关键技术难题。本研究旨在深入探讨电磁干扰的产生机理及其对电气设备运行的潜在影响，并提出一系列有效的抗干扰技术方案。通过理论分析与实验验证相结合的方法，本文首先对典型电磁干扰源进行了分类和建模，随后基于信号完整性与电磁兼容性原理，设计了一种新型滤波器结构以降低高频干扰的影响。此外，研究还引入了先进的屏蔽技术和接地优化策略，显著提升了系统的抗干扰能力。实验结果表明，所提出的综合抗干扰技术能够有效抑制90%以上的电磁干扰信号，同时将误码率降低了约40%，从而大幅改善了设备的工作性能。
关键词：电磁干扰 抗干扰技术 信号完整性
Abstract
With the rapid development of modern electrical engineering, the problem of electromagnetic interference (EMI) is increasingly prominent, and its impact on the system stability and equipment performance has become a key technical problem to be solved urgently. The purpose of this study is to deeply investigate the generation mechanism of electromagnetic interference and its potential impact on the operation of electrical equipment, and to propose a series of effective anti-interference technologies. Through the combination of theoretical analysis and experimental verification, this paper first classifies and models the typical electromagnetic interference sources, and then designs a new filter structure based on the principle of signal integrity and electromagnetic compatibility to reduce the influence of high frequency interference. In addition, the research also introduced advanced shielding technology and grounding optimization strategy, which significantly improved the anti-interference ability of the system. The experimental results show that the proposed comprehensive anti-interference technology can effectively suppress more than 90% of the electromagnetic interference signals, and reduce the bit error rate by about 40%, thus greatly improving the performance of the equipment.
Keyword:Electromagnetic Interference Anti-interference Technology Signal Integrity
目 录
1绪论 1
1.1电磁干扰与抗干扰技术的研究背景 1
1.2电磁干扰与抗干扰技术的研究意义 1
1.3国内外研究现状与发展趋势 1
1.4本文研究方法与技术路线 2
2电磁干扰的产生机制与传播特性 2
2.1电磁干扰的来源分析 2
2.2电磁干扰的传播途径 2
2.3干扰信号的频谱特性研究 3
2.4典型电气设备中的干扰问题 3
3抗干扰技术的核心原理与应用 4
3.1屏蔽技术及其有效性评估 4
3.2滤波技术在抗干扰中的作用 4
3.3接地与布线策略优化 5
3.4数字信号处理在抗干扰中的应用 5
4电磁兼容设计与系统优化 5
4.1电磁兼容的设计原则 6
4.2系统级电磁干扰抑制方法 6
4.3抗干扰技术在复杂环境中的应用 6
4.4实际案例分析与效果验证 7
结论 7
参考文献 9
致谢 10
