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燃料电池汽车电磁兼容测试的主要目的是要达到测量结果的准确性、可重复性,从而分析电磁干扰的发生机理,解决骚扰源及切断干扰传播通道.针对燃料电池汽车整车控制器电磁兼容性问题进行机理分析、设计分析、理论研究,详细介绍了汽车电子零部件必做的电磁兼容性试验,并对相关试验结果进行了分析. 相似文献
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无线网络交换机一般用于基站环境,外界干扰信号容易通过信号线或外壳耦合到无线网络交换机,影响其正常工作。文中基于以上情况,分析介绍GR-1089-CORE 射频传导抗扰度的测试原理和EUT 在试验中出现的问题,然后从接口滤波器的选取及安装电路设计两方面出发,进一步提出一系列的对策措施,增强无线网络交换机的射频传导抗干扰能力。 相似文献
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采用脉宽调制技术(PWM)驱动的电机系统通过功率变换器对电能进行变换和控制,使得电机系统的性能指标得到较大提高。但是由于功率变换器中的电力电子器件工作在开关状态,具有较大电压和电流变化率的功率脉冲信号产生很强的电磁干扰,对电机系统自身和周围环境产生很大影响。本文针对PWM变频器产生的电磁兼容问题,首先分析了PWM驱动电... 相似文献
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This paper describes characteristics of PLT emission with experiment in semi-anechoic chamber and suggests the method for aggregating multiple interferences based on probabilistic approach in the situation in which multiple PLT modems are operating in close proximity to the radio receiver. The levels of the conducted and radiated emission and the APD characteristics are presented. And compatibility between PLT and radio receiver is analyzed with suggested method. This will be useful for assessing interference effect in the field of radio communication and electromagnetic compatibility. 相似文献
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从一体化电机伺服系统传导干扰有效抑制措施的需要出发,及时了解和掌握一体化电机伺服系统传导干扰的最新抑制技术和方法,为研究一体化电机伺服系统传导干扰的有效抑制措施提供必要的技术资料和参考对比方案,对目前相关文献已报道的各种一体化电机伺服系统传导干扰抑制技术和方法进行了研究与综述,归纳为减小干扰源强度和切断传导干扰传播途径两大类抑制方法,并指出各种方法的优缺点及其关键技术,最后展望了一体化电机伺服系统传导干扰有待解决的问题及其发展趋势,为研究人员研究一体化电机伺服系统传导干扰的抑制提供了参考。 相似文献
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This paper presents the results obtained with a specific test mask designed at Motorola for the study of the electromagnetic parasitic emissions in integrated circuits (IC). First, origins of parasitic emissions are presented for CMOS circuits, and electromagnetic compatibility (EMC) measurements of IC emissions are detailed: a radiated measurement method with respect to the IEC61967-2 standard and a conducted one with respect to the IEC61967-4 standard. The REGINA test chip is then described, with a focus on particular structures allowing to test and verify some design guidelines for EMC, like delay cell, emissive structure or on-chip sensor. The printed circuit board that is use to implement the test chip and the experiment test bench are also described. A set of measurements is presented and some guidelines are deduced and recommended as design rules. 相似文献