[電磁] 電磁幹擾
The electromagnetic interference question of switching power is quite prominent for itself service behaviour.
開關電源由于本身工作特性使得電磁幹擾問題相當突出。
Whereas the arrangement of electronic apparatus have an important influence to ElectroMagnetic Interference phenomena.
而艦船電子設備的布置情況對電磁幹擾現象有着重要影響。
Experts think this is caused by electromagnetic interference.
專家們認為這是由于電磁幹擾。
Vehicle body gap is the important coupling way of vehicle electromagnetic interference.
汽車車身縫隙是汽車電磁幹擾的重要耦合途徑。
The function of power filter and the mechanism of electromagnetic interference is analyzed.
分析了電源電磁幹擾産生的機理及電源濾波器的作用；
The basic requirements to a new motor is low vibration, low noise, no electromagnetic interference, regeneration capability, high efficiency, and high reliability.
低振動、低噪音、無電磁幹擾、有再生利用能力及高效率和高可靠性是對新電機的最起碼的要求。
The electromagnetic interference between vehicular wireless communication devices is a serious problem in EMC design for vehicular communication system all through.
車載無線通信設備間的電磁幹擾一直是車載通信系統電磁兼容設計研究的一個重要課題。
The optical distance measurement sensor can effectively escape electromagnetic interference coming from the hostile and measure the target distance, so it is still be used widely on modern aircraft.
由于光學測距傳感器能夠有效地避開敵方電磁幹擾并對目标距離進行測量，因而在現代飛機上仍然得到了廣泛應用。
The IR warning system with large beam and narrow pass band can operate steadily for a long time in the environment of strong vibration and serious electromagnetic interference.
采用獨創的大光束窄通帶紅外警戒技術使系統能在劇烈震動、電磁幹擾嚴重、環境惡劣的鐵道路面長期穩定工作。
Engine spark ignition system is the main source of electromagnetic interference on vehicle.
發動機點火系統是汽車電系中電磁幹擾的重要來源。
However, up to now, there is no conclusion about the source and the mechanism of the electromagnetic interference, as well as the extent of the influence on radar.
但目前國内外對于該電磁幹擾的來源和機理，及其對雷達的影響程度，尚沒有明确的結論。
It was also demonstrated how to define the influence of electromagnetic interference on the safety indexes of microprocessor relay protection and automatics functioning.
它也演示了如何确定電磁幹擾的影響在安全指标的微處理器繼電保護和自動化功能的影響。
Abstract: Paper analyses the sources of electromagnetic interference from switching-mod power supply, and some control methods are presented, and so the electromagnetic compatibility can be improved.
摘要：文章分析了開關電源産生電磁幹擾的主要原因，并給出了相應的抑制措施，從而提高開關電源的電磁兼容性。
The design, construction and operating condition of grounding equipment affect not only safety operation of power system but also electromagnetic interference of substation.
接地裝置的設計施工及運行情況的好壞不僅影響電力系統安全運行，也是影響變電站電磁幹擾的重要方面。
The electromagnetic interference(EMI) noise separating network is used to estimate and suppress the radiated electromagnetic interference noise in a power line communication system.
介紹了電磁幹擾（EMI）噪聲分離網絡在預估與抑制電力線通訊中系統輻射電磁幹擾噪聲方面的應用。
Conduction emission is an electromagnetic emission transmitted on power or signal lines and a primary form of electromagnetic interference at low frequencies.
傳導發射是沿電源線或信號線傳輸的電磁發射，在低頻範圍内，傳導發射是電磁幹擾的主要形式。
The paper presents a high speed \u0026 high precision data transmission system that solves the electromagnetic interference problem in wire data transmission of FOG performance measurements.
介紹了高速高精度無線數據傳輸系統，解決了在光纖陀螺性能測試中有線數據傳輸的電磁幹擾問題。
Therefore, it is necessary to study methods of anti-electromagnetic interference and electromagnetic interference resistant new materials.
所以要求不斷研究科學的抗電磁幹擾方法及新型的抗電磁幹擾材料。
The results show that the EMC design of the modulator cabinet can restrain electromagnetic interference.
驗證了調制器機櫃的EMC設計制作對電磁幹擾抑制的有效性。
This paper at some length deals with intelligent power transmission and distribution equipment, electromagnetic interference, electromagnetic compatibility test and standards.
文章就智能化輸配電設備，以及其對電磁幹擾和電磁兼容試驗與标準作了較祥盡叙述。
However, SMPS operate at high switching frequencies, and the associated transient pulses are full of high frequency harmonics that may cause electromagnetic interference (EMI).
然而，由于開關電源工作在高頻狀态，其産生的瞬态脈沖包含有能夠發射電磁幹擾（EMI）的的高頻諧波。
Non-ultraviolet and infrared rays, no radiation, no electromagnetic interference, green, not harmful elements such as mercury and lead.
不含紫外線和紅外線，無輻射，無電磁幹擾，綠色環保，不含汞和鉛等有害元素。
The strong electromagnetic interference generated in high power TEA CO2 laser system mainly comes from the main discharge circuit, pulse spark switch and power supply.
大功率TEACO2激光器系統産生的強電磁幹擾主要來源于激光器主放電回路、脈沖火花開關和電源。
With the continuous development of power systems, increasing the resistance to electromagnetic interference for electronic components is of great significance.
隨着電力系統的不斷發展，提高電子元件自身的抗電磁幹擾能力，具有十分重要的意義。
With the rapid development of electrified railway, much attention is paid to the influence of its electromagnetic interference to air surveillance radar.
隨着電氣化鐵路的迅速發展，電氣化鐵路電磁幹擾對情報雷達的影響愈來愈引起人們的關注。
ESD simulator is shielded with grounded metal mesh to decrease the electromagnetic interference of the inside relay switch of simulator.
将ESD模拟器用金屬網罩屏蔽，可減小模拟器内部繼電器開關的電磁幹擾。
電磁幹擾（Electromagnetic Interference，EMI）是指由電磁輻射或傳導引起的電子設備、通信系統或電路之間的非預期能量耦合現象。這種現象可能破壞設備正常工作，導緻信號失真、數據錯誤或系統故障。其産生機制涉及電場與磁場的相互作用，符合麥克斯韋方程組描述的基本原理： $$
abla times mathbf{E} = -frac{partial mathbf{B}}{partial t} $$ $$
abla times mathbf{H} = mathbf{J} + frac{partial mathbf{D}}{partial t} $$
根據國際電工委員會（IEC）的定義，電磁幹擾可分為傳導幹擾（通過導線傳播）和輻射幹擾（通過空間傳播）兩類（來源：IEC 60050-161标準）。常見幹擾源包括雷電放電、開關電源電路（如DC/DC轉換器）以及無線通信設備發射的高頻信號。
在工程實踐中，美國聯邦通信委員會（FCC）第15部分規定了電子設備的輻射發射限值（來源：FCC Part 15）。醫療設備領域的研究表明，MRI系統産生的3T以上強磁場可能對心髒起搏器造成功能性幹擾（來源：FDA指南文件 No. 2021-1112）。緩解技術主要采用屏蔽（如Mu-metal合金）、濾波（LC電路設計）和接地策略，相關測試方法在CISPR 16系列标準中有詳細規範（來源：國際無線電幹擾特别委員會）。
電磁幹擾（Electromagnetic Interference，EMI）是指由電磁場或電流引起的電子設備性能降低的現象。以下從定義、分類、來源及影響等方面進行詳細解釋：
EMI是電子設備在運行過程中産生或受到的外部電磁能量幹擾，可能導緻信號失真、通信中斷或設備故障。其核心包含兩方面含義：
根據傳播方式，EMI分為兩種類型：
如需進一步了解具體測試标準或技術原理，可參考（醫療器械EMC測試）及（自動駕駛EMC法規）等來源。
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