[电磁] 电磁干扰
The electromagnetic interference question of switching power is quite prominent for itself service behaviour.
开关电源由于本身工作特性使得电磁干扰问题相当突出。
Whereas the arrangement of electronic apparatus have an important influence to ElectroMagnetic Interference phenomena.
而舰船电子设备的布置情况对电磁干扰现象有着重要影响。
Experts think this is caused by electromagnetic interference.
专家们认为这是由于电磁干扰。
Vehicle body gap is the important coupling way of vehicle electromagnetic interference.
汽车车身缝隙是汽车电磁干扰的重要耦合途径。
The function of power filter and the mechanism of electromagnetic interference is analyzed.
分析了电源电磁干扰产生的机理及电源滤波器的作用；
The basic requirements to a new motor is low vibration, low noise, no electromagnetic interference, regeneration capability, high efficiency, and high reliability.
低振动、低噪音、无电磁干扰、有再生利用能力及高效率和高可靠性是对新电机的最起码的要求。
The electromagnetic interference between vehicular wireless communication devices is a serious problem in EMC design for vehicular communication system all through.
车载无线通信设备间的电磁干扰一直是车载通信系统电磁兼容设计研究的一个重要课题。
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.
由于光学测距传感器能够有效地避开敌方电磁干扰并对目标距离进行测量，因而在现代飞机上仍然得到了广泛应用。
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.
采用独创的大光束窄通带红外警戒技术使系统能在剧烈震动、电磁干扰严重、环境恶劣的铁道路面长期稳定工作。
Engine spark ignition system is the main source of electromagnetic interference on vehicle.
发动机点火系统是汽车电系中电磁干扰的重要来源。
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.
但目前国内外对于该电磁干扰的来源和机理，及其对雷达的影响程度，尚没有明确的结论。
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电磁干扰的影响在安全指标的微处理器继电保护和自动化功能的影响。
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：文章分析了开关电源产生电磁干扰的主要原因，并给出了相应的抑制措施，从而提高开关电源的电磁兼容性。
The design, construction and operating condition of grounding equipment affect not only safety operation of power system but also electromagnetic interference of substation.
接地装置的设计施工及运行情况的好坏不仅影响电力系统安全运行，也是影响变电站电磁干扰的重要方面。
The electromagnetic interference(EMI) noise separating network is used to estimate and suppress the radiated electromagnetic interference noise in a power line communication system.
介绍了电磁干扰（EMI）噪声分离网络在预估与抑制电力线通讯中系统辐射电磁干扰噪声方面的应用。
Conduction emission is an electromagnetic emission transmitted on power or signal lines and a primary form of electromagnetic interference at low frequencies.
传导发射是沿电源线或信号线传输的电磁发射，在低频范围内，传导发射是电磁干扰的主要形式。
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.
介绍了高速高精度无线数据传输系统，解决了在光纤陀螺性能测试中有线数据传输的电磁干扰问题。
Therefore, it is necessary to study methods of anti-electromagnetic interference and electromagnetic interference resistant new materials.
所以要求不断研究科学的抗电磁干扰方法及新型的抗电磁干扰材料。
The results show that the EMC design of the modulator cabinet can restrain electromagnetic interference.
验证了调制器机柜的EMC设计制作对电磁干扰抑制的有效性。
This paper at some length deals with intelligent power transmission and distribution equipment, electromagnetic interference, electromagnetic compatibility test and standards.
文章就智能化输配电设备，以及其对电磁干扰和电磁兼容试验与标准作了较祥尽叙述。
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，由于开关电源工作在高频状态，其产生的瞬态脉冲包含有能够发射电磁干扰（EMI）的的高频谐波。
Non-ultraviolet and infrared rays, no radiation, no electromagnetic interference, green, not harmful elements such as mercury and lead.
不含紫外线和红外线，无辐射，无电磁干扰，绿色环保，不含汞和铅等有害元素。
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激光器系统产生的强电磁干扰主要来源于激光器主放电回路、脉冲火花开关和电源。
With the continuous development of power systems, increasing the resistance to electromagnetic interference for electronic components is of great significance.
随着电力系统的不断发展，提高电子元件自身的抗电磁干扰能力，具有十分重要的意义。
With the rapid development of electrified railway, much attention is paid to the influence of its electromagnetic interference to air surveillance radar.
随着电气化铁路的迅速发展，电气化铁路电磁干扰对情报雷达的影响愈来愈引起人们的关注。
ESD simulator is shielded with grounded metal mesh to decrease the electromagnetic interference of the inside relay switch of simulator.
将ESD模拟器用金属网罩屏蔽，可减小模拟器内部继电器开关的电磁干扰。
电磁干扰（Electromagnetic Interference，EMI）是指由电磁辐射或传导引起的电子设备、通信系统或电路之间的非预期能量耦合现象。这种现象可能破坏设备正常工作，导致信号失真、数据错误或系统故障。其产生机制涉及电场与磁场的相互作用，符合麦克斯韦方程组描述的基本原理： $$
abla times mathbf{E} = -frac{partial mathbf{B}}{partial t} $$ $$
abla times mathbf{H} = mathbf{J} + frac{partial mathbf{D}}{partial t} $$
根据国际电工委员会（IEC）的定义，电磁干扰可分为传导干扰（通过导线传播）和辐射干扰（通过空间传播）两类（来源：IEC 60050-161标准）。常见干扰源包括雷电放电、开关电源电路（如DC/DC转换器）以及无线通信设备发射的高频信号。
在工程实践中，美国联邦通信委员会（FCC）第15部分规定了电子设备的辐射发射限值（来源：FCC Part 15）。医疗设备领域的研究表明，MRI系统产生的3T以上强磁场可能对心脏起搏器造成功能性干扰（来源：FDA指南文件 No. 2021-1112）。缓解技术主要采用屏蔽（如Mu-metal合金）、滤波（LC电路设计）和接地策略，相关测试方法在CISPR 16系列标准中有详细规范（来源：国际无线电干扰特别委员会）。
电磁干扰（Electromagnetic Interference，EMI）是指由电磁场或电流引起的电子设备性能降低的现象。以下从定义、分类、来源及影响等方面进行详细解释：
EMI是电子设备在运行过程中产生或受到的外部电磁能量干扰，可能导致信号失真、通信中断或设备故障。其核心包含两方面含义：
根据传播方式，EMI分为两种类型：
如需进一步了解具体测试标准或技术原理，可参考（医疗器械EMC测试）及（自动驾驶EMC法规）等来源。
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